Product Catalog
RTV-2 Silicone Products
Tin and platinum cure silicone rubber for mold making and prototyping. Select a product for its full technical datasheet.
Shore A hardness
Shore A measures how far a standardized point presses into the cured rubber. Lower numbers flex and stretch; higher numbers resist pressure. Slide the marker to compare values to everyday objects.
Drag, or use arrow keys
Shore 00
Shore A
Shore D
40Shore A
- 00
- 70
- A
- 40
- D
- <0
Feels like a pencil eraser
Soft, but holds its shape.
Tear strength
Tear strength (pounds per inch, ASTM D624) is how well the cured rubber resists a small nick growing into a rip. Higher values survive repeated demolding, undercuts, and thin cross-sections. Lower values suit simple molds and gentler handling.
Mixed viscosity
Viscosity is how readily the mixed rubber flows, measured in centipoise (cps). Low viscosity pours thin and captures fine detail. High viscosity holds its position on vertical surfaces.
Log scale, 1 to 100,000 cps
Cure type
Both cure at room temperature into flexible molds. The catalyst chemistry differs, and that drives the choice.
| Tin cure | Platinum cure | |
|---|---|---|
| Cost | Lower | Higher |
| Cure inhibition | Cures on almost any surface | Sensitive to sulfur clays and some 3D-printed parts |
| Shrinkage | Slight shrinkage while curing | Near zero |
| Mold life | Good for shorter production runs | Longer library life |
General guidance. Confirm fit with our team for your application.
Ordering
Products marked Buy online can be ordered on this site by size, with the order confirmed by our team before it ships. Every other product is available through a quote or a distributor.
47 of 47 products
| SKU | Product | Cure | Shore A (7 day) | Mixed viscosity (cps) | SDS | Buy online |
|---|---|---|---|---|---|---|
| GI-1000 | High-tear tin-cure RTV-2 mold making silicone | Tin | 32 | 30,000–45,000 | SDSPDF | Buy onlinefrom $33.50 |
| GI-1032 | Medium-durometer tin-cure RTV-2 case mold silicone | Tin | 36 | 40,000–50,000 | SDSPDF | |
| GI-1040 | Firm-durometer tin-cure RTV-2 silicone for foam casting | Tin | 40 | 50,000–65,000 | SDSPDF | |
| GI-1100 | Medium-durometer tin-cure RTV-2 mold making silicone | Tin | 25 | 65,000–80,000 | SDSPDF | |
| GI-1110 | Low-durometer high-elongation tin-cure RTV-2 mold making silicone | Tin | 10 | 7,000–15,000 | SDSPDF | Buy onlinefrom $33.50 |
| GI-1120 | Medium-durometer tin-cure RTV-2 mold making silicone | Tin | 20 | 25,000–35,000 | SDSPDF | |
| GI-300 | Firm-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 50 | 5,000–15,000 | SDSPDF | |
| GI-311 | Medium-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 44 | 3,000–13,000 | ||
| GI-312 | Firm-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 60 | 15,000–25,000 | SDSPDF | |
| GI-320B | Firm-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 50 | 25,000–35,000 | ||
| GI-360B | Firm-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 64 | 35,000–45,000 | ||
| GI-380B | Firm-durometer tin-cure RTV-2 potting and encapsulation silicone | Tin | 74 | 15,000–25,000 | ||
| GI-384 | Low-viscosity tin-cure RTV-2 silicone for urethane casting | Tin | 30 | 10,000–20,000 | SDSPDF | |
| GI-386 | Fast-cure tin-cure RTV-2 silicone base for T.O. catalyst | Tin | n.a. | 10,000–12,000 | SDSPDF | Buy onlinefrom $30.15 |
| GI-491 | Chemical-resistant tin-cure RTV-2 mold making silicone | Tin | 26 | 30,000–45,000 | SDSPDF | |
| GI-585 | High-elongation tin-cure RTV-2 silicone for urethane casting | Tin | 22 | 20,000–25,000 | ||
| GI-650 | Medium-durometer tin-cure RTV-2 mold making silicone | Tin | 27 | 20,000–30,000 | SDSPDF | |
| GI-739 | Low-durometer thixotropic tin-cure RTV-2 brush-on silicone | Tin | 18 | 300,000–350,000 | SDSPDF | |
| GI-765 | Medium-durometer thixotropic tin-cure RTV-2 brush-on silicone | Tin | 28 | 400,000–450,000 | Buy onlinefrom $33.90 | |
| P-10 | Very-low-durometer platinum-cure RTV-2 mold making silicone | Platinum | 12 | 5,000–15,000 | SDSPDF | |
| P-125 | Transparent medium-durometer platinum-cure RTV-2 mold making silicone | Platinum | 40 | 90,000–110,000 | SDSPDF | |
| P-15 | Low-durometer platinum-cure RTV-2 mold making silicone | Platinum | 18 | 3,000–13,000 | SDSPDF | |
| P-157 | Soft platinum-cure RTV-2 silicone gel for special effects | Platinum | n.a. | 5,000–7,000 | ||
| P-17 | Low-viscosity platinum-cure RTV-2 potting and encapsulation silicone | Platinum | 50 | n.a. | SDSPDF | |
| P-20 | Low-durometer high-tear platinum-cure RTV-2 mold making silicone | Platinum | 22 | 15,000–25,000 | SDSPDF | |
| P-288 | High-durometer platinum-cure RTV-2 silicone for prototyping and foam casting | Platinum | 55 | 70,000–89,995 | ||
| P-378 | Flame-retardant platinum-cure RTV-2 potting and encapsulation silicone | Platinum | 70 | 7,500–8,500 | ||
| P-429 | Transparent platinum-cure RTV-2 silicone gel for potting and encapsulation | Platinum | n.a. | n.a. | SDSPDF | |
| P-45 | Medium-durometer fast-cure platinum-cure RTV-2 mold making silicone | Platinum | n.a. | 65,000–85,000 | SDSPDF | |
| P-50 | Firm-durometer platinum-cure RTV-2 silicone for prototyping and foam casting | Platinum | 54 | 70,000–90,000 | SDSPDF | |
| P-537 | Ultra-soft platinum-cure RTV-2 silicone for animatronics | Platinum | n.a. | n.a. | SDSPDF | |
| P-541 | Fast-cure platinum-cure RTV-2 silicone for body molding | Platinum | n.a. | n.a. | SDSPDF | |
| P-573 | Ultra-soft platinum-cure RTV-2 silicone for animatronics | Platinum | 4 | n.a. | SDSPDF | |
| P-574 | Soft platinum-cure RTV-2 silicone gel for special effects | Platinum | n.a. | n.a. | ||
| P-592 | Translucent medium-durometer platinum-cure RTV-2 mold making silicone | Platinum | n.a. | 40,000–60,000 | SDSPDF | |
| P-60 | Firm-durometer platinum-cure RTV-2 silicone for prototyping and foam casting | Platinum | 62 | 95,000–120,000 | SDSPDF | |
| P-614 | Fast-demold firm-durometer platinum-cure RTV-2 mold making silicone | Platinum | 60 | 35,000–45,000 | SDSPDF | |
| P-65 | High-durometer platinum-cure RTV-2 silicone for trapped rubber molding | Platinum | 71 | 64,000–68,000 | SDSPDF | |
| P-656 | Soft 1:1 platinum-cure RTV-2 silicone for special effects and glove molds | Platinum | n.a. | n.a. | SDSPDF | |
| P-697 | Medium-durometer fast-cure platinum-cure RTV-2 mold making silicone | Platinum | n.a. | 45,000–75,000 | SDSPDF | |
| P-70 | High-durometer platinum-cure RTV-2 silicone for trapped rubber molding | Platinum | n.a. | 60,000–70,000 | SDSPDF | |
| P-727 | Low-durometer 1:1 platinum-cure RTV-2 silicone for glove molds and animatronics | Platinum | n.a. | 12,000–18,000 | SDS2 files | |
| P-750 | Fast-cure platinum-cure RTV-2 silicone for reusable vacuum bags | Platinum | n.a. | n.a. | SDSPDF | |
| P-829 | Soft platinum-cure RTV-2 silicone for animatronics and prosthetics | Platinum | n.a. | n.a. | ||
| P-831 | Transparent platinum-cure RTV-2 silicone gel for potting and encapsulation | Platinum | n.a. | n.a. | ||
| P-832 | Thixotropic platinum-cure RTV-2 silicone gel for potting and encapsulation | Platinum | n.a. | n.a. | ||
| P-90 | High-tear platinum-cure RTV-2 mold making silicone | Platinum | 35 | 40,000–55,000 | SDSPDF | Buy onlinefrom $36.00 |
Supplemental products
Activators and accelerators for one cure system, and SI additives that work with either.
| SKU | Product | Cure | SDS |
|---|---|---|---|
| GI-177A | GI-177 fast-cure activator for GI-Series silicones | Tin | |
| GI-179A | GI-179 high-elongation activator for GI-Series silicones | Tin | |
| GI-2020A | GI-2020 library-life activator for GI-Series silicones | Tin | |
| GI-800A | GI-800 library-life activator for GI-Series silicones | Tin | |
| GI-UFC | Ultra-fast catalyst for GI-Series silicones | Tin | |
| P-588 | Diluted platinum accelerator for P-Series silicones | Platinum | SDSPDF |
| PT-Accel | Platinum accelerator for P-Series silicones | Platinum | |
| SI-661 | Thixotropic additive for RTV-2 silicones | Either | |
| SI-684 | Dry-finish softener for platinum-cure silicones | Either | |
| SI-690 | Tacky-finish softener for platinum-cure silicones | Either | |
| SI-Primer | Adhesion primer for RTV-2 silicones | Either | |
| SI-Thinner | Silicone fluid thinner for RTV-2 silicones | Either |
Not sure which product fits?
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Help Me Pick walks through your application, then prepares a technical inquiry for our team to confirm before you order.