| HS Code | 715272 |
| Specific Gravity | 1.52 |
| Water Absorption 24 Hr | 0.25% |
| Mold Shrinkage | 0.002 in/in |
| Tensile Strength | 23000 psi |
| Tensile Elongation At Break | 1.5% |
| Flexural Modulus | 1500000 psi |
| Flexural Strength | 35000 psi |
| Notched Izod Impact | 1.0 ft-lb/in |
| Unnotched Izod Impact | 8.0 ft-lb/in |
| Deflection Temperature 264 Psi | 300°F |
| Deflection Temperature 66 Psi | 350°F |
| Coefficient Of Linear Thermal Expansion | 1.5E-5 in/in/°F |
As an accredited RTP Company RTP 207E TFE 10 Amorphous Nylon (Am. PA) Glass Fiber 40% - PTFE 10% factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg net in a moisture-resistant sealed aluminum foil bag, labeled with product name, batch number, and handling warnings, then palletized and shrink-wrapped. |
| Container Loading (20′ FCL) | A 20′ FCL container securely loaded with RTP 207E TFE 10 amorphous nylon, 40% glass fiber, 10% PTFE, ready for shipment. |
| Shipping | This material ships as thermoplastic composite pellets, requiring moisture-barrier packaging to prevent moisture absorption. Standard dry van or container transport is suitable; no hazardous goods classification applies. Handle carefully to minimize dust generation from glass fiber and PTFE content. Store away from ignition sources and protect from crushing during transit. |
| Storage | Store RTP 207E TFE 10 in a cool, dry, well-ventilated area away from direct sunlight and moisture. Keep containers tightly sealed to prevent humidity absorption. Avoid exposure to temperatures exceeding 50°C (122°F). Store away from strong oxidizers, acids, and incompatible chemicals. Ensure area is clean, with proper labeling and spill containment provisions. |
| Shelf Life | Store in a sealed, original container in a cool, dry area. Shelf life is indefinite if kept dry and uncontaminated. |
RTP 207E TFE 10 is a pelletised injection-moulding compound consisting of an amorphous polyamide carrier modified with 40 wt% chopped glass fibre and 10 wt% polytetrafluoroethylene. The amorphous base lowers post-mould differential shrinkage relative to semi-crystalline PA66, while the PTFE phase forms a transfer film on metallic counter-faces and reduces static-to-dynamic friction transition in unlubricated movement. The compound is shear-sensitive above 300°C; therefore barrel residence time and hot-runner inventory are controlled to avoid PTFE degradation and acid formation. Drying is mandatory to below 0.02 wt% residual moisture in a desiccant dryer with dew point below -40°C and 4 h residence at 80°C. Because the glass-fibre phase is abrasive, injection units benefit from bimetallic barrel liners and hardened screw flights; standard high-chromium tool steels in gate inserts exhibit accelerated wear. Published data for this specific configuration under 14 CFR 25.853 vertical burn and smoke density protocols are limited, so aerospace interior use requires part-level testing and cannot be inferred from general polyamide flammability data.
In under-hood electrical connector bodies and engine control module structural housings, the dominant failure mode is not tensile overload but differential moisture expansion across a terminal pin array after humid ageing. A 40 wt% glass-reinforced amorphous polyamide with 10 wt% PTFE is selected where PA66/GF40 parts show out-of-plane warpage after 24 h water immersion at 23°C according to ISO 62 equilibrium moisture uptake comparisons. On a 220-tonne hydraulic injection moulding machine with a 50 mm diameter screw, cavity pressures above 350 bar induce glass-fibre orientation in the weld region behind terminal carrier features; lower packing pressure reduces pin retention force under SAE/USCAR-2 Rev 7 terminal retention protocols. Tooling for these parts normally uses sequential valve-gated hot runners to reposition knit lines away from latch arm roots and to balance glass-fibre distribution across the cavity. Compliance is evaluated under SAE/USCAR-2 Rev 7 for automotive electrical connector reliability, ISO 6722 for heat-ageing interaction with cable and terminal interfaces, and UL 746B for long-term thermal ageing when the housing separates live terminals from metallic mounting brackets. Formulation addition ratio: the moulder charges the compound at 100% as supplied; if post-industrial regrind from the same cell is reused, the maximum permitted blend is 20 wt% regrind to 80 wt% virgin pellets, provided the regrind is re-dried below 0.05 wt% residual moisture and screened through a 3 mm mesh to remove glass-rich fines. Fines removal matters because PTFE-rich fines segregate in the feed throat and alter the effective friction coefficient in the plastication zone. Downstream production proceeds by drying, plastication at a barrel profile from 250°C to 290°C, injection into a hot runner maintained at 280°C, and cooling in a mould held at 85°C to 95°C. The most common production-floor deviation is moisture regain in the machine hopper when ambient humidity exceeds 60% RH; splay then appears on the sealing face and connector latch root. Terminal product types include engine control module connector shells, transmission sensor bodies, glow plug connector housings, and battery management system terminal carriers.
Submerged rotary piston water meter chambers moulded from this compound exploit the 10 wt% PTFE internal lubricant phase, which reduces breakout torque after stall and lowers acoustic friction noise, but the design limit is not frictional heat generation; it is hydrolytic stability. Amorphous polyamide absorbs less moisture than PA66, yet it is not inert in long-term hot-water contact. When a 30 mm diameter measuring chamber is injection-moulded on an 80-tonne all-electric press with a 32 mm screw and a 80°C mould core, the component displays more repeatable circularity after 7 days water immersion than semi-crystalline PA66/GF40, but exposure above 60°C in stagnant lines can produce progressive surface microcracking at exposed glass-fibre ends. The compliance framework for potable water contact is NSF/ANSI/CAN 61 and NSF/ANSI 372; for metrological performance the complete meter assembly is validated to ISO 4064-1 and OIML R 49. Formulation addition ratio: the compound is used at 100% virgin polymer in wetted measuring-chamber components; deliberate dilution with unreinforced amorphous nylon is not recommended because it depresses plate modulus and increases creep under line-pressure pulsation, but if a processor needs to reduce glass-fibre surface bloom the maximum dilution is 10 wt% with a viscosity-compatible amorphous polyamide. Production process: pellets are dried below 0.02 wt% moisture, injected at melt temperature 275°C to 295°C, and held at 600 bar to 800 bar hydraulic packing pressure for 5 s to 8 s. Mould venting depth should not exceed 0.015 mm on the parting line because PTFE volatiles otherwise deposit on the tool surface and increase vent cleaning frequency. Terminal product types include volumetric rotary piston measuring chambers, single-jet impeller bodies, pressure-reducing valve seats, and cold-water pump wear rings.
High-cavitation water meter tools exhibit a second bottleneck independent of cycle time: PTFE fume residues accumulate around core-pull seals, leading to stick-slip on the moving core and occasional lift lines on the measuring chamber sidewall. Moulders who raise mould temperature above 95°C to improve surface finish report faster residue build-up and must schedule vent cleaning every 8 h to 12 h. This operational boundary, rather than polymer degradation, frequently governs line utilisation.
| Application sector | Primary compliance frame | Test designation used for release |
|---|---|---|
| Under-hood connector bodies | SAE/USCAR-2 Rev 7, ISO 6722 | Pin retention force after humidity ageing |
| Potable water meter chambers | NSF/ANSI/CAN 61 | ISO 4064-1 metrological validation |
| Laboratory analysis components | ISO 13485:2016 | ISO 10993-5, ISO 10993-10 |
| Cordless power tool gear cases | IEC 62841-1 | ISO 179-1/1eA |
| Compressor plates | ISO 10440 | ASTM D3702, ASTM D621 |
| Relay bobbins | IEC 61810-1 | IEC 60112, UL 746B |
For laboratory automation linear rail guides and in-vitro diagnostic analyser drawer mechanisms, the selection criterion is low slip-stick actuation under dry cycling rather than maximum load-bearing capacity. The PTFE phase reduces the transition from static to dynamic friction on chrome-plated steel rails, preventing the audible cogging that appears when unfilled amorphous polyamide pads dwell under load. Medical device manufacturers must verify acceptability under ISO 10993-5 cytocompatibility and ISO 10993-10 skin sensitisation when the component may be contacted by operator skin; commercial RTP 207E TFE 10 data do not by themselves certify biocompatibility, and implant use is contraindicated. If the component is fitted within an electrical analyser, the assembly-level standard is IEC 61010-2-101, while the moulding quality system is typically ISO 13485:2016. Formulation addition ratio: medical-facing parts are moulded at 100% virgin compound; any regrind reintroduction is restricted to closed-loop sprues and runners from the same cleanroom cell and must not exceed 15 wt% under validated process controls. Production process: after drying to below 0.02 wt% moisture, the material is plasticated with a low-shear screw profile to minimise glass-fibre breakage; melt temperature is kept at 275°C to 290°C, and mould temperature is maintained at 70°C to 85°C to preserve flatness in long slide pads. Ionic contamination is a process parameter unique to this sector: mould-release agents containing metallic stearates are avoided because they raise extractable ion chromatography readings in the final analyser assembly. Terminal product types include haematology analyser drawer slides, robotic pipette tip rack guides, microplate stacker cams, and non-sterile housing brackets for clinical chemistry modules.
The primary challenge in a thin-wall angle grinder gear case is not melt temperature but filling pressure. At a nominal wall of 1.8 mm to 2.2 mm, a 40 wt% glass-reinforced amorphous polyamide exhibits a higher pressure drop per unit flow length than a 30 wt% glass PA66, so moulders raise melt temperature toward 295°C; this shortens the processing window because residence time above 300°C degrades the PTFE and liberates acidic by-products that corrode unprotected mould steel. Injection moulding machines of 150 tonnes to 250 tonnes clamp force with accumulator-assisted injection speeds of 200 mm/s to 300 mm/s are required for multi-cavity production. The applicable hand-held electric tool safety standard is IEC 62841-1 combined with the relevant part for grinders; polymeric enclosure flammability may be reviewed under UL 746C for abnormal-condition performance. Formulation addition ratio: the compound runs at 100% as-supplied pellets in external transmission housings; if the part includes a metal gear-bearing insert, that insert must be heated to 120°C to 150°C before overmoulding to reduce hoop stress. Regrind use is limited to 10 wt% in impact-critical housings because single-pass heat history lowers weld-line elongation and increases notched impact sensitivity under ISO 179-1/1eA testing. Downstream production includes pre-drying at 80°C for 4 h, injection at 275°C to 295°C, and tool temperature at 80°C to 95°C; weld lines around inserts are shifted with sequential valve gates. Terminal product types include cordless angle grinder gear cases, impact drill transmission covers, hedge trimmer motor housings, and orbital sander bearing carriers.
Drop-impact failure in this sector tends to initiate at the intersection of the gear-case front flange and the lower bearing seat, where glass-fibre alignment is parallel to the wall. Moulders compensate with a short-shot study and adjust packing pressure to 60% to 80% of maximum injection pressure rather than increasing wall thickness. Batch-to-batch variation in glass-fibre length distribution, as measured by burn-off and image analysis, produces greater shift in ISO 179-1/1eA notched impact than any pigment change; therefore incoming lot control often includes a moulded Izod bar as a release criterion.
| Downstream sector | Maximum regrind | Melt temperature | Mould temperature | Drying moisture limit |
|---|---|---|---|---|
| Under-hood connectors | 20 wt% | 250°C–290°C | 85°C–95°C | 0.02 wt% |
| Water meter wetted parts | 0 wt% for wetted parts | 275°C–295°C | 80°C | 0.02 wt% |
| Medical/diagnostic slides | 15 wt% closed-loop | 275°C–290°C | 70°C–85°C | 0.02 wt% |
| Power tool gear cases | 10 wt% | 275°C–295°C | 80°C–95°C | 0.02 wt% |
| Compressor plates | 0 wt% | 280°C–300°C | 80°C–95°C | 0.02 wt% |
| Relay bobbins | 15 wt% non-electrical | 275°C–290°C | 85°C | 0.02 wt% |
For rotary vane compressor end plates and crankshaft bearing carriers, the selection of RTP 207E TFE 10 rests on high compressive modulus, low thermal expansion, and tolerance for oil-borne debris. The 40 wt% glass fibre network provides creep resistance under bolt preload at 80°C sump temperature, while 10 wt% PTFE protects the counter-surface during start-stop oil starvation cycles. Compliance is traceable to ISO 10440 for rotary positive-displacement compressor components and ASTM D3702 for wear rate under thrust-washer conditions; for explosive atmospheres the part assembly must satisfy ATEX 2014/34/EU if static discharge potential is identified, though this is an assembly-level requirement. Formulation addition ratio: in pressure-retaining plates and carriers the compound is used at 100% virgin content; regrind is excluded because glass-fibre length reduction alters compressive creep and because PTFE thermal history affects transfer-film formation. If a moulder needs to lower viscosity for thin ribs, the maximum addition of unreinforced amorphous polyamide is 5 wt% and requires re-qualification under the full ASTM D621 compressive creep protocol. Downstream production differs from thin-wall electrical parts: blanks are injection-moulded as discs or rings at 280°C to 300°C with an injection-compression sequence, then stress-relieved for 2 h at 100°C before finish machining to 0.02 mm flatness. Machining cuts through the moulded skin and exposes glass ends, so sealing faces are lapped, not milled, after annealing. Terminal product types include rotary vane compressor end plates, reciprocating compressor bearing carriers, oil pump thrust washers, and automotive air-conditioning compressor slider plates.
In relay coil bobbins exposed to continuous winding heat, semi-crystalline PA66 grades fail through flange creep around embossed terminal pins; amorphous polyamide with 40% glass fibre and 10% PTFE is substituted because lower moisture-driven dimensional change keeps terminal pitch stable after humid storage. The relevant material standard is UL 746B with a long-term thermal ageing programme; the electromechanical relay standard is IEC 61810-1, and insulation coordination follows IEC 60664-1 creepage and clearance requirements. Formulation addition ratio: bobbin moulders typically run 100% prime compound to avoid metal-flash contamination at terminal inserts; if regrind is used in non-electrical segments only, the blend is capped at 15 wt% and must be free of carbon-containing colour masterbatch because carbon black reduces comparative tracking index measured under IEC 60112. Production process: terminal pins are insert-moulded after preheating to 130°C to 150°C; the melt is injected at 275°C to 290°C into a tool held at 85°C, and the bobbins are annealed at 100°C for 2 h to stabilise flange flatness. Terminal product types include power relay bobbins, contactor coil formers, solenoid valve coil housings, and insulated gate driver transformer bobbins.
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RTP Company RTP 207E TFE 10 Amorphous Nylon (Am. PA) Glass Fiber 40% - PTFE 10% is an injection-moldable compound in which an amorphous polyamide matrix is modified with 40 wt% short glass fiber and 10 wt% polytetrafluoroethylene. The product is classified in the RTP 200 series for polyamide-based thermoplastics and carries the E suffix for an internal lubricant package; the TFE 10 designation indicates a PTFE solid lubricant at 10 wt%. The glass fiber phase increases tensile modulus, creep resistance, and heat deflection temperature, while the PTFE phase supplies a low-shear transfer film at the part surface. In engineering practice, the compound is specified for bearing cages, wear rings, pump wear plates, sliding retainers, gears, and connector guide rails where dimensional tolerance stability and low friction must be maintained across ambient humidity changes. Because the matrix is amorphous rather than semi-crystalline, the compound does not exhibit the sharp glass-transition-dominated shrinkage difference seen in nylon 6 or nylon 6/6. Published data for this specific configuration is limited; the values that follow are representative of 40% glass-reinforced amorphous polyamides with 10% PTFE and should be verified against the current RTP Company data sheet.
In semi-crystalline nylon 6/6, post-mold crystallization can produce flow-direction mold shrinkage of 1.2–1.8% and transverse shrinkage of 1.5–2.2% depending on mold temperature. In RTP 207E TFE 10, the amorphous polyamide matrix confines total mold shrinkage to a narrower band, typically 0.2–0.5% in the flow direction and 0.4–0.7% transverse when measured per ASTM D955-08, reducing residual stress and post-mold warpage. The 24 h water absorption is also lower; amorphous polyamides in the conditioned state absorb roughly 0.5–0.8% moisture, whereas glass-reinforced PA6/6 at 40 wt% glass can absorb 1.0–1.2% under ASTM D570-98. This moisture differential matters in gear train applications because water plasticization shifts tooth stiffness and can change center-distance loading. Elevated humidity in semi-crystalline nylon 6/6 can reduce flexural modulus by 20–30%; the amorphous polyamide matrix reduces this shift to approximately 10–18% at equilibrium humidity, based on published property data for glass-filled amorphous polyamides. The PTFE phase does not chemically bond to the matrix; it forms dispersed spherical domains that lower the dry coefficient of friction and allow a transfer film to develop on carbon steel counterfaces. The trade-off is reduced tensile elongation and notched impact relative to unfilled or non-PTFE glass-filled versions, because the PTFE domains act as discontinuities at the fiber-matrix interface.
In dry sliding contacts, wear behavior is evaluated using a block-on-ring or thrust washer geometry. In ASTM D3702 thrust washer tests at 0.28 MPa and 0.25 m/s, glass-filled polyamides with 10 wt% PTFE typically exhibit dynamic coefficients of friction between 0.12 and 0.20 against SAE 1045 steel with 0.4–0.6 µm Ra finish. Wear factor values in the same test fall between 20 × 10-10 and 50 × 10-10 in³·min/ft·lb·h; published data for this exact RTP formulation is limited, so field validation is required. In contrast, the same glass-fiber amorphous nylon without PTFE can show friction coefficients above 0.30 under the same test conditions, and semi-crystalline PA6/6 with 40% glass but no PTFE can exhibit stick-slip behavior at low sliding speeds below 0.05 m/s. The PTFE concentration is selected because higher PTFE loadings above 15 wt% reduce weld-line strength and delamination resistance, while loadings below 5 wt% do not maintain a stable transfer film across long runs.
Before melt processing is initiated, feeding of the compound should use a desiccant dryer with a dew point of -40°C or lower and a drying temperature of 80–90°C for 4 h. If ambient relative humidity exceeds 65%, allow 6 h residence. The pre-dried moisture level should be below 0.15% by weight; moisture above 0.25% at the hopper generates hydrolysis in the amorphous polyamide, producing surface splay and a reduction in notched Izod and weld-line strength. Barrel temperatures from feed to nozzle are typically 270–300°C, with nozzle temperature held between 280°C and 300°C. Mold temperature is maintained at 70–90°C for dimensional stability; below 65°C, knit-line strength drops because the high glass content freezes the flow front before molecular diffusion occurs. The practical mold-temperature window narrows to 75–85°C when high-gloss surfaces are required. Nozzle temperature should not vary by more than ±5°C during a production run; larger variation changes melt viscosity and reduces shot-to-shot consistency. A general-purpose three-zone screw with 20:1 to 24:1 L/D and compression ratio 2.2:1 to 2.8:1 is adequate; a low-compression screw is preferred to avoid excessive glass fiber breakage. Back pressure is set at 0.3–0.7 MPa and screw surface speed between 0.1 m/s and 0.3 m/s, depending on screw diameter. Residence time above 8 min at melt temperature 300°C can cause PTFE fibrillation and matrix yellowing. In compounding, the glass fiber is fed downstream into a co-rotating twin-screw extruder with 40:1 L/D to preserve fiber length after matrix melting. The PTFE is usually added with the resin rather than downstream because it does not require high shear dispersion, but excessive specific energy above 0.25 kW·h/kg may reduce PTFE domain size and diminish wear performance.
For stable production, tooling for RTP 207E TFE 10 should use hardened mold steel; the glass fiber content accelerates wear on ejector pins, cores, and sliding shut-offs. Gates should be located to produce a unidirectional flow front; multiple radial gates create knit lines where the PTFE phase aligns perpendicular to the weld plane, reducing tensile strength by 25–35% compared with the flow direction. Vent channels of 0.01–0.02 mm depth should be placed along the last-fill regions because PTFE degradation gases can burn at the flow front if trapped. Draft angles of 1–2° are recommended. Shrinkage anisotropy is lower than semi-crystalline polyamide but not absent; after 24 h post-molding relaxation, flow-direction shrinkage is 0.2–0.5%, and transverse shrinkage is 0.4–0.7% under ASTM D955-08. Components with wall thickness transitions greater than 2:1 can exhibit sink marks. For a typical four-cavity gear mold with projected area 250 cm², clamp force requirement is approximately 125–175 metric tons based on a cavity pressure of 50–70 MPa. Viscosity curves for mold-filling simulation are generated by capillary rheometry per ISO 11443 at melt temperature 290°C and shear rates of 100–1000 s-1.
| Property | Test method | Representative value |
|---|---|---|
| Density | ISO 1183-1 | 1.49 g/cm³ |
| Tensile strength at break | ASTM D638-14 | 158 MPa |
| Tensile modulus | ISO 527-2/5 | 10,300 MPa |
| Flexural strength | ASTM D790-17 | 220 MPa |
| Flexural modulus | ASTM D790-17 | 9,700 MPa |
| Notched Izod impact | ASTM D256-10 | 75 J/m |
| Heat deflection temperature at 1.82 MPa | ASTM D648-18 | 185°C |
| Coefficient of linear thermal expansion, flow/transverse | ASTM D696-16 | 2.5 / 4.0 × 10-5 K-1 |
| Water absorption, 24 h | ASTM D570-98 | 0.6% |
| Mold shrinkage, flow/transverse | ASTM D955-08 | 0.2–0.5% / 0.4–0.7% |
Compared with semi-crystalline PA66, chemical resistance of amorphous polyamide is lower in some solvents because the amorphous phase has higher free volume. Strong mineral acids, phenol, cresol, and methoxypropanol can dissolve or swell the matrix; polar solvents such as methylene chloride can cause stress crazing in molded parts with high residual stress. The PTFE component is inert to most chemicals but reduces adhesion to paints, inks, and adhesives; bonding should be pre-tested with corona or plasma surface treatment if the part requires labeling. Hydrocarbon oils, greases, and automotive transmission fluids are generally compatible at temperatures below 120°C. Brake fluid and ethylene glycol at temperatures above 80°C can attack the polyamide matrix and are not recommended for long-term service. When chemical exposure is combined with high tensile stress, environmental stress cracking can occur; testing per ISO 22088-2 or ASTM D543-21 should be performed for candidate contact fluids.
Production-scale injection molding campaigns in environments with relative humidity above 65% show a characteristic failure mode: splay marks at the gate, delamination at the glass fiber interface, and reduced molecular weight in the molded part. Moisture at 0.25–0.40% entering the barrel generates steam during plasticating; the steam hydrolyzes amide bonds and produces carbon dioxide, causing surface porosity. Notched Izod can drop from 75 J/m to below 45 J/m in wet processing, and weld-line strength can fall by 30%. The PTFE phase makes visual moisture splay more difficult to distinguish from PTFE dispersion defects because both produce white streaks; moisture-related splay is more uniform across the part and reduces with increased melt temperature or lower back pressure, while PTFE agglomerates remain as localized white spots. In field reports on glass-filled amorphous polyamide molding, hopper residence at 30–35°C and 70% RH for 4 h raised pellet moisture by 0.20–0.30%, sufficient to reduce tensile strength by 12–18% after molding. The corrective action is to dry for an additional 2–4 h and to use closed hopper loading with dry air purge at -40°C dew point.
Electrical and thermal limitations are defined by the amorphous polyamide glass transition and the filler system. Under load, heat deflection temperature at 1.82 MPa is 185°C per ASTM D648-18; at 0.45 MPa the value may reach 205°C. In electrical applications, volume resistivity is typically 1 × 1015 ohm·cm per IEC 62631-3-1, and dielectric strength is approximately 20 kV/mm per IEC 60243-1 at 3.0 mm thickness. Continuous use temperature under mechanical load is bounded by the 185°C HDT; short-term excursions above 200°C are not recommended because creep modulus declines sharply. The material is not suggested for continuous exposure to steam above 120°C because hydrolysis of the polyamide backbone can reduce molecular weight and cause surface cracking; PTFE domains do not protect the matrix from chemical attack. Applications in halogen-rich environments require verification because amorphous polyamide structures can be susceptible to environmental stress cracking at high stress levels.
The compound is differentiated from RTP 207E without PTFE by lower friction and improved wear life in dry running applications. RTP 207E typically exhibits a dry coefficient of friction of 0.30–0.40 against steel in ASTM D3702, while the TFE 10 variant operates at 0.12–0.20. The addition of PTFE reduces tensile modulus by 5–10% and tensile strength by 10–15% relative to the non-PTFE product because PTFE domains occupy volume without load transfer. Compared with RTP 204E TFE 10 with 30 wt% glass fiber, the 40 wt% glass version has higher flexural modulus and higher heat deflection temperature but lower notched impact and shorter spiral flow. Compared with semi-crystalline PA6/6 40% glass 10% PTFE, the amorphous product shows lower and more isotropic mold shrinkage, lower moisture uptake, and lower post-mold warpage, but it is generally less resistant to hot ethylene glycol and strong acids. Published data for the exact RTP 207E TFE 10 configuration is limited, so direct comparisons should be verified on the same tool.
| Compliance or standard area | Designation or condition | Status |
|---|---|---|
| RoHS Directive | 2011/65/EU | Compliant based on supplier declarations |
| REACH Regulation | EC 1907/2006 | No SVHC above 0.1% w/w in current SDS |
| Flammability | UL 94 | HB at 1.5 mm |
| Food contact | FDA 21 CFR 177.1500 | Not certified for this compound without application-specific testing |
| Environmental stress cracking | ISO 22088-2 / ASTM D543-21 | Required for candidate contact fluids |
| Mold-filling characterization | ISO 11443 | Capillary rheometry at 290°C |
In a pump wear ring application operating against a carbon steel rotor at 0.20 MPa and 0.5 m/s, the low friction of RTP 207E TFE 10 reduces startup torque and stick-slip. However, abrasive slurries containing 10–15 wt% silica particles increase counterface wear because the 40% glass fiber acts as a high-hardness third body. If abrasive content exceeds 5 wt%, a softer unfilled PTFE compound or bearing-grade PEEK may be required. In sliding electrical contact retainers, the amorphous polyamide provides flatness after molding, but PTFE can contaminate downstream painting operations if not cleaned. For parts with wall thickness below 1.0 mm, the combination of 40% glass fiber and 10% PTFE reduces flow length, so gate and runner sizing require mold-filling simulation with a viscosity curve from capillary rheometry per ISO 11443. Regrind content should be limited to 20 wt%; higher regrind levels reduce impact and fatigue resistance due to cumulative fiber length degradation and PTFE agglomeration.
