Applications
Vacuum
Low-outgassing FFKM for vacuum and ultra-high-vacuum systems.
What goes wrong
- Outgassing limits achievable base pressure
- Permeation and compression set cause leaks over thermal cycles
- Bake-out temperatures exceed the limits of standard elastomers
Process steps
UHV and high-vacuum sealingThermal bake-out cyclesPlasma and ion-beam systems
Equipment
Vacuum chamber doors and flangesKF / ISO / CF fittingsFeedthroughs and viewportsLoad locks and gate valves
Grades we would start from
OMS70S
73 Shore A · -10 to +275 °C
Grade dataOMS7102
75 Shore A · -10 to +300 °C
Grade dataOME7505
75 Shore A · -10 to +320 °C
Grade dataWhere each grade fits
- ASTM E595 low-outgassing grades (TML / CVCM reported per grade)
- Low compression set to maintain sealing load through bake-out
- Stated to 1.33 × 10⁻⁷ Pa (internal test)
Other environments
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Discuss a vacuum application
Tell us the medium, temperature and motion. We will confirm the grade and the tolerance class.
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