Room Temperature Vulcanizing (RTV-2)
Medical Grade RTV Silicone
Medical Grade RTV Silicone
Room Temperatures Vulcanizing (RTVs) are 2-part systems which can be easily mixed and cured into soft and durable elastomers. Silicone RTVs have long been used in the manufacturing of soft parts in contact with the patient because of their inherent comfort and biocompatibility.
Our Silbione™ RTVs allow designers and manufacturers to :
- Create end products with a life-like feel
- Optimize comfort for the end user thanks to a wide range of hardness (starting from Shore A 1)
- Improve the durability of the final piece with exceptional mechanical properties
- Increase their productivity with easy to mix and degas low viscosity silicone RTVs
Example of applications include :
- Prosthetic liners
- Shoe insoles
- Pellots, bandages & orthotics inserts
- Medical training aids
- High-end adult novelties
Elkem Silicones offers the following ranges for Room Temperature Vulcanizing (RTV) silicones under the Silbione™ brand:
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High Perfomance
| SilbioneTM | Color | Hardness Sh A |
Viscosity Pa.s |
Max working time 23°C | Max setting time 23°C | Tear Strength N/mm |
Biocompatibility support * |
| RTV 4511 (QC) | Translucent | 11 Sh00 | 1,2 | 60' (25') | 90' (35') | - | ♦ |
| RTV 4522 | Translucent | 22 Sh00 | 2 | 2h (25') | (45') | - | ♦ |
| RTV 4530 | Translucent | 30 Sh00 | 4 | 1h10' (10') | 3h | 3 | ♦ |
| RTV 4404 | Translucent | 4 | 1,9 | 40' | 3h | 9 | ♦ |
| RTV 4408 (QC) | Translucent | 8 | 1,5 | 2h (50') | 6h | 14 | ♦ |
| RTV 4410 (QC) | Translucent | 10 | 1,9 | 1h10' (10') | - | 15 | ♦ |
| RTV 4420 (QC) | Translucent | 20 | 4 | 50' (3') | 3h (35') | 15 | ♦ |
| RTV 4428 | Translucent | 28 | 20 | 90' | 16h | 20 | ♦ |
| RTV 4440 | Translucent | 40 | 50 | 70' | - | 18 | ♦ |
Balances Performance
| SilbioneTM | Color | Hardness Sh A |
Viscosity Pa.s |
Max working time 23°C | Max setting time 23°C | Tear Strength N/mm |
Biocompatibility support * |
| RTV 4407 (QC) | Translucent | 7 | 1 | 20' | 45' | 1 | ♦ |
| RTV 4417 | Translucent | 16 | 3 | 10' | - | 4 | ♦ |
| RTV 4439 | Translucent | 40 | 7 | 25' | - | 2,5 | ♦ |
Lower Tack & Easier to Demold
| SilbioneTM | Color | Hardness Sh A |
Viscosity Pa.s |
Max working time 23°C | Max setting time 23°C | Tear Strength N/mm |
Biocompatibility support * |
| RTV 4522 HY | Translucent | 22 Sh00 | 0,9 | 100' | - | - | ♦ |
| RTV 4404 HY | Translucent | 4 | 1,9 | 45' | - | 8 | ♦ |
| RTV 4406 HY | Translucent | 6 | 1 | 80' | - | 1 | ♦ |
| RTV 4408 CLR | Translucent | 8 | 8,5 | 1h50' | - | 5 | ♦ |
Special Performance
| SilbioneTM | Color | Hardness Sh A |
Viscosity Pa.s |
Max working time 23°C | Max setting time 23°C | Tear Strength N/mm |
Biocompatibility support * |
| RTV 4410 LD | White | 10 | 5,2 | 35' | Low density 0,8 | 6,5 | ♦ |
| RTV 4418 ADH | Translucent | 18 | 10,5 | 55' | Basecoat | - | ♦ |
| RTV 4425 ADH | Translucent | 30 | 3 | 20' at 70°C | Basecoat | - | ♦ |
| RTV 4335 | Pink | 35 | paste | 2' | 5' | - | ♦ |
*Silbione™ grade materials have been tested for biocompatibility according to applicable ISO 10993 and/or USP Class VI standards. These grades are not supported for implantation longer than 30 days.
The typical properties listed above are not intended for use in preparing specifications for any particular application.
User has sole responsibility to determine product suitability for intended uses and applications.
Customized grades upon request. Elkem also supplies additives to adjust the product properties.