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Home > Seal Selection Guide By Performance |
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Ultra High
Vacuum |
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Low
Pressure |
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High
Pressure |
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Cryogenic
Temperature |
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High
Temperature |
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| Spring Back |
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| Shaped Seals |
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| Axial Sealing |
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QDS
Compatible |
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| Seating Load |
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High |
Moderate |
High /
Moderate |
Moderate /
Low |
Low |
High /
Moderate |
Leak Rate
Approximation |
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Helium |
Ultra-Helium |
Helium /
Bubble |
Helium /
Bubble |
Low Bubble |
Helium |
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Recommended - Excellent |
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Recommended - Good |
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Optional - Special Design |
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Not Recommended |
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Ultra-Helium |
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≤ 1 x 10-11 std.cc/sec He |
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Seal Load: Wall Thickness or Spring Load |
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Helium |
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≤ 1 x 10-9 std.cc/sec He |
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Surface Finish: Seal and Cavity |
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Bubble |
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≤ 1 x 10-4 std.cc/sec He |
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Surface Treatment: Coating/Plating/Jacket Material |
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Low Bubble |
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≤ 25 cc/min @ 50 psig Nitrogen
per inch of diameter |
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