Back-up Rings

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Installation sketch Back Ring

The back rings of Freudenberg Sealing Technologies supplement and back up the O-ring. They act as a supporting element to prevent gap extrusion in radially sealing ISC O-rings. By expanding the use of O-rings to various shapes, back seals protect O-rings against damage.

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polymer
PTFE
material
brand
Freudenberg
design

Filtered items for Back Ring ( 29 hits )

  design material d H brand legacy item no. item no. SP | IP    
RTS 99 PTFE 300713 - - Freudenberg - 70606001 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606004 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606007 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606010 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606013 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606016 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606019 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606022 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606025 Details
RTS 99 PTFE 300713 - - Freudenberg - 70606028 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 58.547 - Freudenberg 0070606039F 70606039 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 55.372 - Freudenberg 0070606038F 70606038 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 52.553 - Freudenberg 0070606064F 70606064 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 52.197 - Freudenberg 0070606037F 70606037 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 49.378 - Freudenberg 0070606063F 70606063 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 49.022 - Freudenberg 0070606036F 70606036 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 46.203 - Freudenberg 0070606062F 70606062 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 45.847 - Freudenberg 0070606035F 70606035 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 42.621 - Freudenberg 0070606034F 70606034 Details
cross-section thumbnail Back Ring RTS-SC RTS-SC 99 PTFE 300119 38.202 - Freudenberg 0070606061F 70606061 Details

Back Rings from Freudenberg Sealing Technologies offer a high level of protection against damage

Back Rings from Freudenberg Sealing Technologies offer an exceptionally high level of protection against damage. Back Rings themselves have no sealing function, but are generally used in combination with the O-Ring. For example, to avoid gap extrusion of radially sealing ISC O-Rings by providing an extremely reliable reduction in the sealing gap on the low-pressure side. Back Rings are frequently used in hydraulics, for example in hydraulic valves and hydraulic pumps. Freudenberg Sealing Technologies Back Rings also provide exceptionally reliable sealing of ball valves or cylinder bases and heads, as required in general industrial applications.

Back Rings for use with O-Rings

Back Rings from Freudenberg Sealing Technologies are the ideal addition for use with the highly versatile O-Ring. They are used as a kind of backup. Back Rings ensure that an O-Ring maintains its round shape even at high pressures and thus withstands even high compressive loads without being damaged. This is achieved by mounting the Back Rings behind the O-Ring on the low pressure side under a one-sided compressive load. In situations with changing pressure directions, Freudenberg Sealing Technologies recommends the use of two Back Rings, used on both sides of the O-Ring.

Back Rings with assured quality

As with all of its products, Freudenberg Sealing Technologies also relies on the highest quality, durability and the best materials for the Back Rings. Most Back Rings are made from PTFE and can therefore easily withstand extreme temperatures of -200°C to 260°C. In addition, there are elastomer Back Rings that can be stretched and therefore easily mounted in installation grooves.

Range of Back Rings online

The complete range of Back Rings, including product and material data sheets, ordering options, prices and availability as well as dealer contacts, can be found in our FST e-catalogue.