09/06/2026
Plain rubber sheet works fine until you put it under real bolt load. Then it stretches, creeps, and eventually fails.
Insertion rubber has a cotton or nylon fabric layer through the body of the sheet. That stops it stretching. It won't creep, won't extrude, won't take a set under compression. For pump gaskets, flanged joints, and compressor mounts, it's not the premium option — it's just the correct one.
If you've had plain sheet fail under load, this is what you should have been using.
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