PTFE sealing lips are PTFE compound discs that are mechanically
formed to a diameter slightly smaller than the shaft. The forming
of the lip creats a shape that takes advantage of the hoop strength
of the PTFE compound discs. This hoop strength provides the load
that is critical for low or no pressure applications to obtain a
positive seal.The sealing element typically has a smooth surface
contacting the shaft. For applications sealing liquid at below
0.1Mpa, a hydrodynamic spiral feature can be machined into the
surface of the sealing element to provide a positive pumping action
to drive fluid away from the air side of the seal.It is critical to
match the seal to the shaft rotation to ensure positive
sealing.Sealing element Material Selection:LP1001 Premium grade
virgin PTFE for static, slow-dynamic or light-duty application.
Also for food-contact service requiring FDA approval.
Color:whiteLP2030 Highly wear resistant in fast-rotary service and
on hardened shafts in well-lubricated rotary service, Color:Dark
greyLP2036 Highly wear resistant in fast-rotary service and on
hardened shafts in well-lubricated rotary service,softer than
LP2030, Color:Dark greyLP8030 Good wear resistant in fast-rotary
applications. Less abrasive to soft shaft and in poorly-lubricated
service.LP3020 Low coeffication of friction and excellent wear
resistance combined with low surface pressure. Color: blackLP7010
Excellent wear resistance in gases,air,water and vacuum.Low
abrasion to dynamic surface. Suitable for high speed.
Specifications
PTFE oil seals have used on auto engine crankshfts. Our factory
produce PTFE lip slices for the seals, and the specifications of
the slices are complete. The slices have been used by many seals
companies.
Advantages
The advantages what the PTFE lip slices have, as follows: wear resistance,cold resistance,corrosion resistance and high
temperature resistance.