SBT seals main lip and minor lip 1)Main lip The main lip is the most critical component of seals. Its sealing edge contacts closely around the shaft surface in order to provide excellent sealing performance. During service,seals are placed under various stresses,such as mathine vibration,shaft runout and changes in the temperature and pressure of substances to be sealed. The main lip is designed so as to generate force radial lip load and to keep the sealing edge consistently in close contact with the shaft under such stresses. For such stresses,seal rubber material is made from synthetic rubber,which is highly elastic and abrasion-resistant. 2)Minor lip The minor lip prevents the entry of dust and contaminants from outside.As a prelubricant,grease can be retained in the space between main lip and minor lip.
Posted on: Thu, 06 Jun 2013 02:14:44 +0000
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