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Spiral PTFE Back-up Rings


Split PTFE Back-up Rings Spiral PTFE back-up rings are one of the types of back-up rings that are generally used along with O-rings in pneumatic and hydraulic equipment. While O-rings are excellent sealants which have the capability to efficiently handle transactions without any loss, they tend to extrude when exposed to high pressure and high temperature conditions.

Such conditions are common in modern industry where fluids often exert increased pressure and temperature which can be tackled by using back-up rings along with O-ring which will prevent it from extrusion. They secure the rings to make sure they don't end up extruding into the clearance area of the mating surface. There are different types including solid which is uncut, single turn scarf cut and multi-turn which is the spiral cut variant of the back-up ring.

The multi-turn or Spiral PTFE Back-up rings have protruding design to ideally suit the surface and secure the o-rings from intrusion. While materials such as hard rubber or plastic is also used to manufacture them, the PTFE variant is the most preferred of them all because these materials have excellent resistance against concentrated acids, bases, solvents, gases and high temperatures.

The spiral variant belongs to the standard sized configurations while users can also avail heavy duty and extended sizes based on individual requirement. Using PTFE material to construct them makes them automatically compensate for the wear leading to better durability. They also have low friction, can meet extreme industrial applications and wear rates render which makes them ideal to be used to make spiral back-up rings.

American Seal & Packing can help to determine the type of Spiral PTFE Back-up Rings required. PTFE is one of the type of gasket material we specialize in, however we do offer a wide range of other materials than may be better suited to your application.

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Item# Price
PTFEBUR-004-SPIRAL $ 78.00
PTFEBUR-005-SPIRAL $ 62.80
PTFEBUR-006-SPIRAL $ 21.60
PTFEBUR-007-SPIRAL $ 22.10
PTFEBUR-008-SPIRAL $ 22.50
Buy Spril PTFE Back-up Rings

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