Phenol Aldehyde Colophony Bearing Protector Only for angular contact bearing. It Improves duration of the bearing usage. Many advantages such as Heat Resistance; Oil Resistance; Scuff Resistance; Mechanical Strength; Dynamic Performance; Noise; Stability; Shrinkage Factor; Vibration; Magnet etc are much better than the steel and brass protector. Basic material : phenol aldehyde colophony Size: Inside diameter: 12-220mm Outside diameter: depend on customer need Length: 820mm We can supply the raw Phenol Aldehyde Colophony fabric in roll and also can produce the precision protector according to your need. Warm welcome to contact us.