SSP-267 is a 40-durometer, heat-cured fluorosilicone elastomer that meets MIL-DTL-25988C, Type 2, Class 1, Grade 40 requirements.


40-Durometer Peroxide Cure Fluorosilicone

SSP-267 is a 40-durometer (Shore A) heat-cured fluorosilicone elastomer that uses a Varox-peroxide and dicumyl-peroxide catalyst system. This fluorosilicone compound meets the requirements of the MIL-DTL-25988C, Type 2, Class 1, Grade 40 specification. Because MIL-DTL-25988C rubber requires significant testing, there is a $500 minimum order amount. Small-quantity orders may be subject to certification charges.

MIL-DTL-25988C, Type 2, Class 1, Grade 40 Fluorosilicones

SSP-267 elastomers meet MIL-DTL-25988C, Type 2, Class 2, Grade 40 requirements for oil-resistant and fuel-resistant fluorosilicones. According to this U.S. military specification, Type 2 fluorosilicone elastomers are for molded parts (other than O-rings), sheets, strips, and extruded shapes. Class 1 fluorosilicones are general-purpose elastomers. Grade 40 indicates that the rubber has a nominal 40-durometer hardness.

Peroxide Cured Fluorosilicone Elastomers

SSP-267 fluorosilicone elastomers are peroxide-cured, a robust technique that is also cost-effective. Peroxide cure fluorosilicones are not inhibited by amines, tin compounds, latex, or urethanes, and SSP post-bakes all peroxide cured silicones to prevent bloom. SSP-267 fluorosilicones are used in aerospace and military applications, and combine broad temperature resistance with resistance to fuels, coolants, and oils.  

Form Factors and Colors for Fluorosilicone Compounds

SSP-267 fluorosilicone elastomers are supplied as ready-to-mold compounds or compression-molded sheet stock. These fluorosilicone compounds can be pigmented to meet your application requirements, but the most popular colors produced are red, blue, and black.

More Information

Download the SSP-267 data sheet for specifications such as tensile strength, elongation percentage, tear resistance, specific gravity, and cure profile. SDS information and an independent test report are available. SSP can also supply data from additional tests (such as oil immersion) performed in accordance with MIL-DTL-25988C, Type 2, Class 1, Grade 40 requirements.