Skip to content Cast Urethane Services for Prototypes and Low-Volume Production
At RPM Fast, our cast urethane services are built for projects that sit between prototyping and full-scale production. If you need parts that look, feel, and perform like final injection-molded components — but without the high tooling cost — this is where cast urethane makes sense.
We keep things simple: you share your design, and we help you turn it into high-quality parts that are ready for testing, validation, or even short production runs.
Cast Urethane is a manufacturing technique to make high-quality cosmetic and functional parts produced in a production-like material quickly and inexpensively before proceeding to injection-molding.
| Mechanical Properties | Hardness, Shore | Color | Tensile Strength | Tensile Modulus | Flexural Strength | Flexural Modulus | Tear Strength | Elongation | Izod Impact | Heat Deflection Temp (@ 66 psi) |
|---|---|---|---|---|---|---|---|---|---|---|
| Units | psi | psi | psi | psi | psi | % | (ft-lb/in) | ºF | ||
| PE-Like (TC-865 A/B) | 95 A +/- 5A | Clear Amber | 4,015 | 5,700 | N/A | N/A | 440 | 635 | N/A | N/A |
| Elastomer | 90 A +/- 5A | Translucent Amber | 4,020 | 1,800 | N/A | N/A | 405 | 670 | N/A | N/A |
| 80 A +/- 5A | Translucent Amber | 3,720 | 2,100 | N/A | N/A | 385 | 650 | N/A | N/A | |
| 70 A +/- 5A | Translucent Amber | 1,803 | 405 | N/A | N/A | 225 | 1183 | N/A | N/A | |
| 60 A +/- 5A | Translucent Amber | 1,260 | 340 | N/A | N/A | 150 | 715 | N/A | N/A | |
| 50 A +/- 5A | Translucent Amber | 1,020 | 300 | N/A | N/A | 125 | 650 | N/A | N/A | |
| 40 A +/- 5A | Translucent Amber | 940 | 80 | N/A | N/A | 120 | 800 | N/A | N/A | |
| 30 A +/- 5A | Light Yellow | 1050 | 165 | N/A | N/A | 110 | 1300 | N/A | N/A | |
| 25 A +/- 5A | Light Yellow | 680 | 90 | N/A | N/A | 80 | 1,000 | N/A | N/A | |
| 15 A +/- 5A | Translucent pale Amber | 600 | 70 | N/A | N/A | 65 | 1,220 | N/A | N/A | |
| PP-Like (TC-872 A/B) | 70 D +/- 2D | Translucent pale Yellow | 3,310 | 71,350 | 3,315 | 84,680 | N/A | 28.3 | 1.78 | 240º |
| PC-Like (TC-857 A/B) | 84 D +/- 2D | Pale Yellow/ Clear | 9,100 | 290,000 | 12,200 | 300,000 | N/A | 11 | 0.93 |
| Mechanical Properties | Hardness, Shore | Color | Tensile Strength | Tensile Modulus | Flexural Strength | Flexural Modulus | Tear Strength | Elongation | Izod Impact | Heat Deflection Temp (@ 66 psi) |
|---|---|---|---|---|---|---|---|---|---|---|
| Lexan-Like Clear (WC-782 A/B) | 82 D +/- 2D | WaterClear / Colorless | 6,650 | 260,000 | 11,000 | 320,000 | N/A | 5 | 1 | 158º |
| Nylon- Delrin Like (TC-854 A/B) | 84 D +/- 2D | Transparent pale yello | 10,060 | 330,000 | 13,700 | 360,000 | N/A | 10.5 | 1.14 | 190º+/-5º |
| High Temp (TC-895 A/B) | 84 D +/- 2D | Translucent Pale Yellow | 10,400 | 287,000 | 12,200 | 303,000 | 9.8 | 0.95 | 290º | |
| ABS-Like FR (TC-891 FR Rev1) | 80 D +/- 2D | White/Opaque | 6,117 | 250,000 | 10,126 | 281,000 | N/A | 21 | 0.58 | 186º |
| High ImpactFDA class VI (PT-8902) | 85 D | Light Brown | 10,010 | 371,155 | 15,574 | 386,612 | N/A | 21.6 | 2.1 | 190º |
| High Impact FR (PT-8952) | 85 D | Translucent Off White | 10,650 | 381,675 | 15,445 | 424,275 | N/A | 24.5 | 1.6 | 179º |
| High Impact Abrasion PP-Like (TC-8772) | 70 D +/- 5D | Translucent/Amber | 5,025 | 54,000 | 2,070 | 54,000 | N/A | 480 | 8.8 | 157º |
| Optical Clear UV (IE-72DC) | 80 D +/- 2D | WaterClear / Colorless | 8,000 | N/A | N/A | 250,000 | N/A | 2 | N/A | 140º |
Cast urethane is mainly used for prototypes, testing, and low-volume production. It’s ideal when you want parts that look and perform like final products without investing in expensive tooling.
The main difference is cost and volume. Injection molding is better for large-scale production, while cast urethane is perfect for smaller batches and early-stage testing.
Typically, it’s used for small runs — anywhere from a few parts up to a couple hundred, depending on your project.
You can choose from a range of materials, including rigid plastics, flexible rubber-like materials, and even transparent options. It depends on how your part needs to perform.
Yes, in many cases they closely replicate injection-molded parts in appearance and performance, making them great for testing and validation.
Optimized by Seraphinite Accelerator