Silicone-like flexibility with much better fuel & oil resistance
Great at very low temps; not ideal for dynamic/abrasive service.
| Feature | Details |
|---|---|
| Also called | FVMQ, FMQ |
| Typical service temp | –100°F to +350°F (–73°C to +177°C) |
| Hardness range | 40–80 Shore A (common: 70A; often blue) |
| Cure systems | Peroxide-cured (standard) |
| Key strengths | Fuel & mineral-oil resistance with silicone-like low-temp flexibility |
| Actual limits vary by compound and media—verify in your service conditions. | |
BEST FOR
- ✔ Exposure to fuels, aromatic/mineral oils, aviation fuels/jet fuel
- ✔ Need very low-temperature sealing (down to ~–100°F)
- ✔ Dry heat, ozone/UV/weather resistance
- ✔ Mostly static sealing (covers/doors, connectors, housings)
Not For
- ✘ Dynamic/abrasive service (low tear/abrasion strength)
- ✘ Brake fluids, ketones, hydrazine
- ✘ Long-term hot water/steam service
Popular FVMQ Options
- 70A light-blue general-purpose FVMQ
- Low-temperature focused grades
- Inch (AS568) and metric sizes; customs available
Inch (AS568) and metric sizes. Custom sizes and colors on request.
Engineering Notes
- FVMQ keeps the low-temp flexibility of VMQ but adds fluorinated side chains → markedly better fuel/oil compatibility.
- Compared with VMQ: better fuels/oils, lower hot-air limit.
- Best used static due to lower abrasion/tear resistance vs NBR/HNBR/FKM.
-
Applications: Aerospace fuel systems • Automotive evaporative/fuel components • Electronics/connector seals • Static gaskets in harsh environments.