■Description

Broken edges appear in the inner diameter under low pressure on the surface of the seal.

■Contributing factors

• Excessive compression

• The seal of poor quality or low hardness

• The seal is larger than the groove

• The groove is irregular or sharp

• There is gap on the surface of seal

■Recommended improving method

• Adopt the seal of good quality or higher hardness

• Proper design of the groove

• No cheating on workmanship and materials during processing of the seal

• Carefully select the seal, and never buy products that are too cheap