Type B PolyPak. A rectangular shaped symmetrical squeeze seal with a knife trimmed beveled lip. Standard materials include 4615, 4622, 4651, 4263, 4207, 4266. 6-10 5. A dual lip seal created by the combination of a standard PolyPak square shell and a rubber lip seal/energizer. Standard materials are a 4615 shell and 4180 lip seal/energizer.
In fact, this PTFE Lip Seal Design Guide exists separately from other Parker EPS market-specific publications precisely because virtually every industry has specific needs for the unique physical and chemical properties of these remarkable seals.
A PTFE Rotary Lip Seal is a seal that features a lip on the ID that seals dynamically on a shaft and metal casing on its OD to press-fit into a bore. A gasket is sandwiched between layers of sealing lips and the can to seal off the potential leak path. This 42 page guide includes the following topics and more: How They Work; Why PTFE
When applications demand low load or low closure force on their housings and mating components, lip seals are a great solution. Other benefits of Parker's lip seal technology: -Ease of assembly -Increased application pressures can be achieved -Small or large cross sections available to fir your application -Alternative to changing your current
Energized lip seals comprise of a high modulus elastomer, (or high grade engineering plastic) jacket and a low modulus elastomer O-ring energizer. The low modulus O-ring energizes the jacket under low pressure conditions to increase the sealing force allowing them to be used in low and high pressure applications.