SSP1778 is a 50-durometer silicone rubber that meets the requirements of the AMS 3345 specification. This military and aerospace silicone uses a dicumyl- peroxide catalyst system. SSP supplies this heat-cured silicone elastomer as a ready-to-mold compound. It can be pigmented to meet your requirements, but the most popular colors are brick red, black, and gray.
The AMS 3345 specification covers silicone rubber in the form of sheet, strip, tubing, molded shapes, and extrusions. AMS 3345 silicones are resistant to deterioration by weathering and aircraft piston engine oil. They remain flexible over the temperature range noted. SAE International, a professional association and standards-developing organization, defines Aerospace Material Specifications (AMS) like AMS 3345.
The shelf life for uncatalyzed SSP1778 is indefinite, but this military and aerospace silicone may need freshening after 1 to 2 years. When catalyzed, the shelf life is 2 to 6 months. Cold storage will extend the shelf life for this military and aerospace silicone rubber.
The AMS 3345 spec is available from SAE International. The table below shows test data for SSP1778.
Property | Typical Values |
Shore A (45-55 range) | 50 |
Tensile Strength (1000 psi minimum) | 1260 psi |
Elongation % (450 minimum) | 670% |
Tear B (150 ppi minimum) | 190 ppi |
Tensile Stress @100% (90 minimum) | 160% |
Specific Gravity | 1.17-1.23 |
Other tests performed in accordance with the AMS 3345 specification include:
Download the SSP1778 data sheet and compare this PDF to the AMS 3305 specs from SAE International. Contact SSP to request a quote, or for additional information about this silicone rubber.
