The shape of the seal (optional)
1. The material of the hydraulic seal is incompatible with the medium. 2. Inconsistent with the use of ambient temperature. 3. The seal material or seal form is inappropriate. 4. Thermal overload. 5. Chemical damage. 6. The seal is too soft. 1. The seal expands or shrinks excessively. 2. Seals are prone to aging. 3. Crawling and noisy. 4. Rubber is brittle, melts or scars. 5. The seal swells, shrinks or hardens. 6. Squeeze into the gap, plastic deformation.