Fluorosilicone O-rings
Fluorosilicone shares the outstanding ozone, sunlight, and weathering resistance of the silicone. Parco’s fluorosilicone O-rings find their widest use in aggressive military, aerospace, and automotive environments involving exposure to fuels over wide temperature ranges. They are not recommended for dynamic sealing due to poor abrasion resistance.
Individual fluorosilicone compounds have service temperatures that range from -80 to +350°F. Parco’s most popular high performance fluorosilicone compounds for O-rings are listed below.
| Elastomer | Compound | Durometer (Shore A) |
Color | Key Properties |
|---|---|---|---|---|
| Fluorosilicone | 1902-60 | 60 | Blue | AMS R 25988, AMS 3325, and MIL R 25988 compliant |
| Fluorosilicone | 1933-70 | 70 | Blue | AMS R 25988 and MIL R 25988 compliant |