Common failure types of O-rings

Phenomenon:The sealing surface of the O-ring   is flattened.

Phenomenon: Impurity   exists on the surface of o-ring or in the cross section.

Phenomenon:

The o-ring appears to be   worn parallel to the direction or plane of motion, with loose particles and   scratches on the surface.

Phenomenon: bubbling,   cracking, microporous, discoloration.

Phenomenon: small nicks,   nicks, or scratches.

Causes:   Excessive compression;High temperature;Insufficient vulcanization degree of   elastomer;The chemical overbulked.

Cause: Processing   environment deposition;The elastomer reacts or degrades.

Cause: Rough sealing   surface;High temperature, operating environment contains impurities;Dynamic   motion occurs.

Cause: incompatible with   chemical medium or high temperature environment.

Cause: There are sharp   edges in the hardware part;The elastomer size is not suitable;The surface of   the elastomer is contaminated;Hard for low.