SSP1331-T
SSP1331-T is a 40-durometer silicone that meets the physical requirements for AMS 3301. It resists weathering and petroleum-based lube oils.
AMS silicones meet numbered Aerospace Material Specifications (AMS) from SAE International. They are used in both aerospace and military applications.
SSP makes aerospace silicones that meet AMS specifications. We offer a full Certificate of Analysis (COA) with every batch for traceability.
Note: SSP also makes MIL-DTL-25988 fluorosilicones, and some prints call out this material as AMS 25988.
The table below describes the AMS silicones that SSP can supply as sheets, rolls, or ready-to-mold compounds, or that we can fabricate into custom molded gaskets or O-rings.
| AA | SSP Grade | Notes |
| AMS3301 | SSP1331T | SSP331T is a 40-durometer silicone that meets the physical requirements for AMS 3301. It resists weathering and petroleum-based lube oils. |
| AMS3302 | SSP1773 | SSP1773 is a 50-durometer silicone that meets the physical requirements for AMS 3302. It's available in red, gray, and brown. |
| AMS3303 | SSP352 | SSP352 is a 60-durometer silicone that meets the physical requirements in AMS 3303 and AA 59588 Class 2A and 2B, Grade 60. It can be pigmented. |
| AMS3304 | SSP389 | SSP389 is a 70-durometer, peroxide-catalyzed, heat-cured silicone that meets AMS 3304 and AA 59588, Class 2A and 2B, Grade 70 requirements. |
| AMS3305J | SSP2554 | SSP2554 is an 80-durometer silicone rubber that meets the physical requirements for AMS 3305J. It resists weathering and petroleum-based lube oils. |
| AMS3325 | SSP2496 | SSP2496 is a 60-durometer silicone that meets the fuel resistance requirements in AMS 3325. This AMS silicone can be pigmented as required. |
| AMS3345 | SSP1778 | SSP1778 is a 50-durometer silicone that meets AMS 3345 requirements. It's supplied as a ready-to-mold compound and can be pigmented. |
SSP1331-T is a 40-durometer silicone that meets the physical requirements for AMS 3301. It resists weathering and petroleum-based lube oils.
SSP1773 is a 50-durometer silicone that meets the physical requirements for AMS 3302. It’s available in red, gray, and brown
SSP1778 is a 50-durometer, heat-cured elastomer that’s designed to meet the AMS 3345 specification.
SSP2496 is a 60-durometer silicone that meets the fuel resistance requirements in AMS 3325. This AMS silicone can be pigmented as required.
SSP2554 is an 80-durometer silicone rubber that meets the physical requirements for AMS 3305J. It resists weathering and petroleum-based lube oils.
SSP352 is a 60-durometer silicone that meets AMS 3303 and AA 59588 Class 2A and 2B, Grade 60. It’s supplied in different form factors and colors.
SSP389 is a 70-durometer, peroxide-catalyzed, heat-cured silicone elastomer that meets the requirements of A-A-59588, Class 2A and Class 2B, Grade 70. Find out if this silicone rubber is right for your application.
AMS silicones meet Aerospace Materials Specification (AMS) standards from SAE International, which was known formerly as the Society of Automotive Engineers (SAE). AMS specifications have four-digit numbers (e.g., AMS 3345) and are part of large and comprehensive database of aerospace materials.
When AMS standards are revised, a sequential letter is appended to the numbered designation (e.g., AMS 3345G). Sometimes, AMS specifications are written as a long alphanumeric string (e.g., AMS3345G) without any spaces.
Aircraft silicones and aviation silicones aren’t the only materials that have AMS numbers, but AMS silicones are used widely in this industry because they resist weathering and petroleum-based lube oils. They also remain flexible over a wide temperature range and resist heat aging.
In addition, AMS silicones can be pigmented so that their colors match larger product designs. Typically, these materials are supplied as sheets, strips, tubing, extrusions, and molded shapes.
AMS Number | Durometer | Description |
AMS 3301 | 40 | General-purpose |
AMS 3302 | 50 | Heat and weather resistant |
AMS 3303 | 60 | General-purpose |
AMS 3304 | 70 | Heat and weather resistant |
AMS 3305 | 80 | General-purpose |
AMS 3325 | 60 | Fuel and oil resistant |
AMS 3345 | 50 | 1000 psi |
AMS 3356E | 60 | Lubricating oil and compress set resistant Electrical grade |