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When to Use PEEK, PTFE or Nylon Backup Rings

Posted On March 13, 2018

Backup rings, also known as anti-extrusion rings of BURs, do exactly what their name implies: they act as back up support to sealing assemblies.

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Posted in: BUR, back up ring

Beginner’s Guide to PTFE and PEEK Backup Rings

Posted On June 29, 2017


Backup rings can be made from a variety of materials, including polymers. In this article, we will look at PTFE and PEEK backup rings while at the same time reviewing some of the basics of backup rings.

Why Use Backup Rings?

Rubber o-rings are good, but when temperatures and pressures rise they have a bad habit of extruding into clearance between mating surfaces, which isn’t a good thing. In fact, extrusion failure is one of the main causes of o-ring failure. As the o-ring begins to extrude into the clearance gap, it will experience more and more damage until it is useless. This phenomenon is sometimes called nibbling, and when it occurs you will notice that the o-ring will have a ragged edge on the low-pressure side.

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Posted in: PEEK, BUR, back up ring, PTFE

Beginner’s Guide to PTFE and PEEK Backup Rings

Posted On August 05, 2016


Backup rings can be made from a variety of materials, including polymers. In this article, we will look at PTFE and PEEK backup rings while at the same time reviewing some of the basics of backup rings.


Why Use Backup Rings?

Rubber o-rings are good, but when temperatures and pressures rise they have a bad habit of extruding into clearance between mating surfaces, which isn’t a good thing. In fact, extrusion failure is one of the main causes of o-ring failure. As the o-ring begins to extrude into the clearance gap, it will experience more and more damage until it is useless. This phenomenon is sometimes called nibbling, and when it occurs you will notice that the o-ring will have a ragged edge on the low-pressure side.

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Posted in: PEEK, BUR, back up ring, PTFE

PTFE Energized Seals with PEEK Back-up Ring: Match Made in Heaven for High Pressure Applications

Posted On February 05, 2016


PEEK Back Up Ring Oil & Gas:

One of the popular choices for seals for the intense, high pressure, corrosive, high temperature environments found in the oil and gas industry is a combination of a PTFE spring-energized seal with a PEEK back-up ring (BUR) installed on the downstream side of the seal gland.  Why?

 

Need more information? Check out these PEEK resources and articles rom the Advanced EMC Technologies:

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Posted in: Polymer Seals, Seals for Oil & Gas, PTFE Seals, advanced polymers, PEEK, Oil & Gas Industry, BUR, back up ring

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