| HS Code | 870756 |
| Primary Material | TANGOGRAY FLX950 |
| Secondary Material | VEROBLACKPLUS RGD875 |
| Color | Gray |
| Tensile Strength | 2.4 MPa |
| Elongation At Break | 80% |
| Shore A Hardness | 75 |
| Density | 1.15 g/cm³ |
| Heat Deflection Temperature | 40 °C |
| Water Absorption | 0.5% |
| Tear Resistance | 15 N/mm |
| Compression Set | 15% |
| Flexural Modulus | 1.5 MPa |
As an accredited Stratasys Rigur Rubber-Like PolyJet 3D Printing Polymer Combination: Primary: TANGOGRAY™ FLX950; Secondary: VEROBLACKPLUS RGD875 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | PolyJet polymer combination packaged as two 1 kg sealed cartridges: one primary TANGOGRAY™ FLX950 and one secondary VEROBLACKPLUS RGD875. |
| Container Loading (20′ FCL) | 20′ FCL loaded with Stratasys Rigur Rubber-Like PolyJet 3D Printing Polymer Combination: TANGOGRAY FLX950 primary; VEROBLACKPLUS RGD875 secondary, secured for transport. |
| Shipping | Shipping description: Stratasys Rigur Rubber-Like PolyJet 3D Printing Polymer Combination (Primary: TANGOGRAY FLX950; Secondary: VEROBLACKPLUS RGD875), liquid UV-curable photopolymer resin cartridges. Not regulated as dangerous goods for transport (no UN number, class, or packing group). Ship upright, sealed, at controlled temperature, protected from heat, sparks, and direct sunlight. |
| Storage | Store TANGOGRAY™ FLX950 and VEROBLACKPLUS RGD875 in original, sealed cartridges upright in a cool, dry, well-ventilated area at 18–25 °C (65–77 °F). Keep away from heat, sparks, open flames, direct sunlight, moisture, and incompatible materials. Do not freeze. Keep containers tightly closed, protect from damage, and follow SDS/shelf-life instructions. Use oldest stock first. |
| Shelf Life | Stratasys shelf life: 18 months from date of manufacture when stored unopened at 18–25°C in original packaging. |
During automotive interior soft-touch validation, perceived initial quality measurements on rotary HVAC knobs and steering wheel control pads typically require a skin hardness within **Shore A 70–80**, a smooth substrate transition at the rigid-soft boundary, and sufficient scuff resistance to survive the OEM’s release fixture cycle. The Rigur digital material combination uses TANGOGRAY™ FLX950 as the primary UV-cured elastomeric network and VEROBLACKPLUS RGD875 as the secondary jetting component; the printer-level addition ratio is fixed by the shore-hardness preset in GrabCAD Print and is not open to manual post-mixing. At **Shore A 80**, cartridge consumption logs on a Stratasys J850 Prime record a lower secondary-material share than the **Shore A 95** preset because the secondary rigid phase is added only to raise hardness, black pigmentation, tear resistance, and dimensional stability. Compliance testing is conducted under **FMVSS 302** for interior flammability, **DIN 75201-B** for windshield fogging, **REACH EC 1907/2006 Annex XVII**, and **RoHS 2011/65/EU amended by (EU) 2015/863**. The downstream production process involves multi-material PolyJet deposition at **16 µm** layer thickness, UV solidification, waterjet support removal, and secondary bonding over a rigid VeroClear carrier or machined ABS substrate to simulate production soft-touch overmolding. Terminal part types include HVAC rotary knobs, steering wheel thumb-control pads, and gear shift bezel soft-skin prototypes subjected to **100,000-cycle** rotational-bending validation on production-scale fixtures.
Compression set in digital photopolymer seals is governed by the degree of UV conversion and residual monomer content at the post-cure step, rather than by the sulfur crosslink density present in compression-molded EPDM. For sealing applications, an evaluation to **ASTM D395 Method B** at **25 %** constant deflection, **70 °C**, and **22 h** is used because it separates thermal softening from permanent set. The Rigur combination exhibits layer-wise anisotropy: specimens oriented with the build axis normal to the flange plane show higher compression set after **70 °C** aging than specimens oriented with layers parallel to the compression direction. On production-scale PolyJet systems such as the Stratasys J850 Prime or Connex3, the seal cross-section is split into an outer VeroBlackPlus-rich domain and an inner TangoGray-rich core; the addition ratio is selected through the targeted Shore A preset and is not post-hoc. The **Shore A 60** configuration uses a lower secondary-material consumption than the **Shore A 80** configuration because the rigid secondary phase raises hardness and reduces elastic recovery. Published exact volume fractions for this specific Rigur preset are limited; the cartridge consumption report in GrabCAD Print remains the only accessible batch-level ratio. Downstream processing includes printing at **16 µm** layers, waterjetting support from deep seal grooves, then post-curing at the machine vendor’s recommended cycle before flange compression testing on a calibrated torque-controlled test fixture. Parallel quantification follows **ISO 815-1:2014**. Terminal parts include compressor head gaskets, pump housing seals, and dosing valve seat prototypes used for fitting confirmation before investment in compression mold tooling.
| Test parameter | Standard designation | Condition |
|---|---|---|
| Compression set | ASTM D395 Method B | 25 % deflection, 70 °C, 22 h |
| Compression set, metric | ISO 815-1:2014 | 25 % deflection, 70 °C, 22 h |
| Hardness | ASTM D2240 | Shore A, 15 s reading |
| Tensile strength and elongation | ASTM D412 Die C | 500 mm/min |
| Tear strength | ASTM D624 Die C | 500 mm/min |
In surgical simulation suites, haptic fidelity correlates with tissue resistance to needle penetration, lateral shear, and recovery after deformation. A cardiac tissue phantom produced from the Rigur digital material combination relies on TANGOGRAY™ FLX950 as the elastic matrix and VEROBLACKPLUS RGD875 as the rigid contrast material that raises apparent modulus at the septal wall and vessel boundary. The addition ratio is set through the voxel-level digital material map in GrabCAD Print; an operator does not mix resins but prescribes local combinations by assigning a Shore A value and rigid component concentration to each segmented region. Downstream processing starts with DICOM segmentation of CT or MR images, conversion into a voxel stack, multi-material jetting at **16 µm** layers on a Stratasys J750, support removal in a circulating waterjet system, and surface sealing with a biocompatible polyurethane coating for repeated use. Compliance requires cytotoxic testing according to **ISO 10993-5**, skin irritation according to **ISO 10993-10**, and production traceability under **ISO 13485:2016**. Terminal parts include cardiac tissue phantoms, breast interventional phantoms, and vascular access trainers used in hospital training and medical device validation.
Flexural fatigue in elastomeric midsoles is typically evaluated by repeated compression at **5 Hz** and **250,000 cycles** using a dynamic mechanical analyzer configured to the heel-strike profile. In printed Rigur midsoles, the layer boundary acts as a crack arrestor when the sample is oriented with build layers parallel to the flexure plane; the opposite orientation produces early delamination and loss of energy return. The combination uses TANGOGRAY™ FLX950 as the primary phase for energy return and VEROBLACKPLUS RGD875 as the secondary phase for tear strength at the sidewall transition. The formulation ratio follows the digital-material preset for **Shore A 70–80**; higher secondary content gives tear resistance but reduces elongation at break. Downstream processing includes lattice generation, PolyJet deposition at **16 µm**, waterjet support removal, post-cure, and mechanical testing to **ASTM D624 Die C**, **ASTM D412 Die C**, and **SATRA TM205**. Compliance is checked against **REACH EC 1907/2006 Annex XVII** and **RoHS 2011/65/EU**. Terminal parts are prototype midsoles, heel counter prototypes, and orthotic top covers produced for fit and biomechanical validation before injection mold tooling is released.
Before finalizing wearable strap geometry, manufacturers evaluate dynamic shear on the retaining clip interface and skin-contact irritancy over **8 h** wear periods. The Rigur combination produces a matte black strap body when TANGOGRAY™ FLX950 and VEROBLACKPLUS RGD875 are jetted together according to the Shore A preset selected for strap flex zones. The addition ratio is not modified by the operator; a lower Shore A region obtained through voxel-level digital material assignment increases the TangoGray share locally, while a higher Shore A region near the clip increases the VeroBlackPlus share. Downstream processing involves a single-build multi-material PolyJet run at **16 µm** with a rigid VeroClear lug insert embedded in the strap, waterjet support removal, and then a short post-cure. Compliance for skin contact is verified through **ISO 10993-5** and **ISO 10993-10**; cartridge contents are also assessed under **REACH EC 1907/2006** and **RoHS 2011/65/EU**. Terminal components include smartwatch band prototypes, sports earbud retention hooks, and wearable sensor housing straps subjected to **10,000-cycle** buckle retention testing.
When robot end-effector pads are required for automated glass handling, surface micro-texture and low-loss viscoelastic damping control vacuum sealing and release reliability. A Rigur contact pad with **Shore A 70–80** hardness is printed with a textured first layer that reproduces a **0.4 mm** hexagonal surface pattern to reduce apparent contact area and raise local pressure at the glass interface. The TangoGray-rich core provides compression setback, while the VeroBlackPlus-rich surface domain raises cut growth resistance and dark pigmentation. The addition ratio is set in the PolyJet digital material preset; cartridge logging on a Connex3 or J850 Prime shows secondary material consumption lower than the **Shore A 90** preset but higher than the **Shore A 60** preset. Downstream processing includes deposition at **16 µm**, support removal, and force-controlled compression testing under **20 %** deflection to determine load-compression curves. Abrasion resistance of the textured contact face is assessed according to **ISO 4649-A**, with the tested pad mounted on a vacuum plate actuated by a six-axis robot. Compliance is additionally checked against **REACH EC 1907/2006** and **RoHS 2011/65/EU**. Terminal components include glass-lifting suction cup adapters, vacuum plate gasket pads, and battery-cell handling contact tips for production-scale automation cells.
Sealing force retention in appliance door gaskets is constrained by small radius corners where the extruded EPDM profile folds over itself and loses compression. The Rigur combination is printed as a single-piece corner joint prototype with the durometer requirement **Shore A 60–70** prescribed by the appliance design release. TANGOGRAY™ FLX950 supplies bulk elastomeric recovery; VEROBLACKPLUS RGD875 at the preset secondary ratio supplies enough rigidity to maintain the corner seal angle under repeated door closure. The exact addition ratio is carried in the digital material firmware and is selected by the Shore A value in GrabCAD Print; any off-machine mixing is not supported. Downstream processing starts with three-dimensional scan data of the existing steel door panel, fitting of the gasket cross-section to the scan gap, PolyJet printing at **16 µm** with waterjet support removal, and compression load profile acquisition at **20 %**, **40 %**, and **60 %** closure points using a linear actuator. Compliance follows **REACH EC 1907/2006**, **RoHS 2011/65/EU**, and the appliance OEM’s leak-rate threshold. Terminal parts are refrigerator door gasket prototypes, dishwasher door seal corner prototypes, and oven door control-panel seal prototypes used for assembly fit validation.
Competitive Stratasys Rigur Rubber-Like PolyJet 3D Printing Polymer Combination: Primary: TANGOGRAY™ FLX950; Secondary: VEROBLACKPLUS RGD875 prices that fit your budget—flexible terms and customized quotes for every order.
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The product designation Stratasys Rigur Rubber-Like PolyJet 3D Printing Polymer Combination—configured with TangoGray FLX950 as the primary elastomeric phase and VeroBlackPlus RGD875 as the secondary rigid phase—is a multi-material acrylate photopolymer system for PolyJet additive manufacturing. It is not a single cartridge resin; it is a digital material produced by simultaneous jetting of two model resins, UV-cured in situ, with the ratio of secondary to primary phase determining final Shore hardness, tensile modulus, elongation, and color density. The term “Rigur” in this combination should not be conflated with Rigur RGD450, which is a separate rigid polypropylene-like PolyJet material. The elastomeric phase is a gray rubber-like acrylate ester; the secondary phase is a rigid black opaque photopolymer. In the combined product, VeroBlackPlus RGD875 functions as both a stiffening agent and a colorant. Mechanical characterization of the cured network follows standard PolyJet coupon protocols: hardness is measured per ASTM D2240 on a 6 mm plaque, tensile properties per ASTM D638 or ASTM D412, tear resistance per ASTM D624, and compression set per ASTM D395. No single datasheet can define the entire ratio range because the cured state shifts from elastomer-dominant to glassy-polymer-dominant as the VeroBlackPlus fraction increases.
The as-built hardness of the TangoGray FLX950 / VeroBlackPlus RGD875 combination is governed by the digital material ratio programmed in the PolyJet build preparation software. In the elastomer-dominant region, the cured matrix consists of highly crosslinked acrylate chain segments with low glass transition temperature, producing Shore A values close to the TangoGray FLX950 baseline. As the fraction of VeroBlackPlus RGD875 increases, the glassy phase transitions from isolated inclusions to a partially co-continuous network. This morphological transition is not linear; small additions of the secondary phase below the percolation threshold modify modulus only moderately, while higher additions cause a steeper increase in Shore A and a corresponding reduction in ultimate elongation. For systems operating at a nominal layer thickness of 14–30 µm, the UV dose per layer, jetting temperature, and ambient humidity affect the degree of acrylate conversion and therefore the batch-to-batch variance of the cured network. Hardness should be verified on a printed plaque per ASTM D2240 and not inferred from the nominal ratio alone. Published data for this specific TangoGray/VeroBlackPlus digital-material ratio is limited; design validation must include destructive tensile testing per ASTM D638 on specimens built in the same orientation as the production part. The elastomeric phase TangoGray FLX950 is characterized by Shore A durometry per ASTM D2240, tensile strength and elongation per ASTM D638 or ASTM D412, and tear resistance per ASTM D624. Because the combination has no single published datasheet for all blend ratios, the combined material should be specified by the build software’s digital material recipe and by acceptance testing on printed test coupons.
Published datasheet values for VeroBlackPlus RGD875 can serve as a reference for the rigid phase. The following table consolidates mechanical and thermal properties reported for the secondary component under standard test conditions. The values are typical, not specification minima, and should be re-verified for a specific digital material blend.
| Property | Test Method | Published Typical Range |
|---|---|---|
| Tensile strength | ASTM D638 | 50–65 MPa |
| Elongation at break | ASTM D638 | 10–25% |
| Flexural strength | ASTM D790 | 75–110 MPa |
| Flexural modulus | ASTM D790 | 2200–3200 MPa |
| Heat deflection temperature at 0.45 MPa | ASTM D648 | 45–50 °C |
| Shore hardness | ASTM D2240 | 83–86 Shore D |
| Water absorption | ASTM D570 | 1.1–1.5% |
The combined material should be qualified under the following compliance matrix. No statement of conformity should be assumed without testing on the production printer, because the digital ratio and post-processing affect leachable content, surface reactivity, and mechanical response.
| Requirement | Standard / Method | Application Note |
|---|---|---|
| Shore hardness | ASTM D2240, ISO 7619-1 | Measure on 6 mm thick plaque, three points minimum |
| Tensile strength and elongation | ASTM D638, ASTM D412 | Type IV or Die C specimen in X–Y orientation |
| Tear resistance | ASTM D624 | Elastomer-dominant blends only; rigid blends may not tear. |
| Compression set | ASTM D395, ISO 815 | 22 h at 23 °C or 70 °C depending application |
| Water absorption | ASTM D570 | 24 h immersion at 23 °C |
| Flammability | UL 94 | Test at minimum and maximum build thickness; not inherently self-extinguishing. |
| RoHS | EU 2011/65/EU | Verify cured part at production post-processing state. |
| REACH | EC 1907/2006 | SVHC declaration from material manufacturer covers resin cartridge, not printed part. |
Production-scale build orientation for TangoGray FLX950 / VeroBlackPlus RGD875 parts is constrained by the anisotropic nature of PolyJet lamination. Z-direction tensile and tear properties are typically lower than X–Y plane properties because the interlayer boundary contains unreacted acrylate species and support interface residue. Parts intended for repeated flexing should be oriented so that maximum principal strain lies in the X–Y build plane rather than across layer stacks. Thin walls below 1.0 mm in the Z direction exhibit higher variance in Shore hardness because the UV cure is less uniform through the elastomeric thickness. On multi-material PolyJet platforms, the two resins are mixed in the printhead or before jetting; viscosity differences between TangoGray FLX950 and VeroBlackPlus RGD875 can produce transient ratio drift during high-throughput builds if the system is not fully calibrated. Field data from production lines indicate that the wiper blade and rubber roller assemblies require more frequent replacement during elastomeric builds than during rigid Vero-only work because the uncured oligomer film deposits on the roller surface and can transfer back to the printed layer. Support material removal from deep concave features is sensitive to geometry; internal channels narrower than 2 mm tend to retain water-soluble support unless cleaned with pressurized water at 4–6 bar followed by ultrasonic agitation where permitted. No solvent soak should be substituted.
Post-processing of the combination follows the standard PolyJet water-jetting route for SUP705 or SUP706 support material. Residual support on elastomeric surfaces can plasticize the acrylate network and reduce surface hardness by several Shore A points if not removed; a post-jetting soak in clean water at 20–25 °C for 10–20 min is used to soften support before pressurized rinsing. Drying at ambient laboratory conditions for 24–48 h is required before hardness measurement, because water absorption shifts Shore A values downward. The material is not stable in continuous contact with polar solvents, brake fluid, or concentrated acids; exposure to ethanol or isopropanol beyond 5 min can induce surface crazing. For applications involving occasional hydrocarbon contact, a chemical compatibility coupon test is required because the digital blend’s solvent response cannot be predicted from the VeroBlackPlus or TangoGray datasheets alone. Thermal aging above 50 °C in air can cause progressive stiffening and color shift in the elastomer phase; therefore continuous service should be limited to the same upper temperature window as the secondary resin’s heat deflection temperature.
Typical production applications for the TangoGray FLX950 / VeroBlackPlus RGD875 combination include functional black gaskets, dust covers, connector seals, vibration isolators, and overmolded grip features. In a low-volume automotive sealing application, the part can be printed in 16 µm high-quality mode to reduce stair stepping on a 2 mm compression flange, but build time increases by approximately 1.5–2.0× relative to 30 µm mode. The material’s functionality in sealed applications depends on compression set and surface finish; prototypes are typically tested under ASTM D395 compression set conditions and leak-tested at 0.1–0.3 bar positive pressure for non-critical dust seals. For dynamic applications, cyclic flexing specimens should be tested per ASTM D813 or equivalent crack-growth method, because the acrylate network exhibits a lower fatigue threshold than carbon-black-filled EPDM or nitrile rubber.
Compared with TangoPlus FLX930 and TangoBlackPlus FLX980, TangoGray FLX950 is used here as the primary phase in a gray elastomeric matrix; the addition of VeroBlackPlus RGD875 produces an opaque black or dark-gray digital material whose hardness lies between the unfilled elastomer and the rigid secondary phase. Compared with Agilus30, which is formulated for higher tear strength and improved fatigue resistance in elastomeric parts, this combination should be evaluated for applications requiring color density and a stiffer response rather than maximum elongation. Compared with Rigur RGD450, the product is not a rigid polypropylene-like material; its failure mode is elastomeric or semi-rigid, with higher elongation and lower tensile modulus than the high-impact rigid resin. The combination is also distinct from Digital ABS, a high-stiffness opaque photopolymer blend used for heat-resistant tooling; Digital ABS does not provide the low-modulus behavior of the TangoGray phase. The difference from cast urethane and molded EPDM is primarily thermomechanical: the PolyJet acrylate network is UV-crosslinked and contains no thermoplastic phase, so it cannot be re-melted or reprocessed, and its compression set and hot-air aging behavior are generally inferior to those of carbon-black-filled rubber compounds.
Operational boundaries for the combination include a recommended maximum continuous service temperature below 50 °C, removal of support material within 24 h of build completion to prevent residue bonding, and storage of unopened cartridges at 15–25 °C with low humidity. The uncured resins are acrylate-based; contact with skin should be avoided, and waste rinse water must be processed in accordance with local regulations. The cured parts are not inherently food-contact or medical-grade. Any claim of suitability for skin contact or repeated food contact requires validation under the applicable FDA 21 CFR or EU 10/2011 migration protocol for the specific digital material ratio and post-processing sequence.
