Seal Design > Considerations
> Considerations 2
Considerations, Part 2
addition to compression, the stretch applied to o-rings in service
(either to keep the o-ring in the gland during assembly or service,
or to aid in the installation) can have an impact on the sealing
performance. These effects can include:
in cross section
As a seal is stretched, the cross section is reduced.
effect (elevated temperatures)
When an elastomer is stretched and the temperature elevated, the
molecular chains will attempt to reduce the imposed stress. Excessive
stretch can lead to premature cracking or seal failure.
Topic Gland Design
Special Considerations, Part 3
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