Back 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
NBR
material
90 NBR NB901801
brand
Dichtomatik
design
STU

Filtered items for Back Ring ( 342 hits )

  design material d H brand item no. SP | IP    
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 101.75 1.02 Dichtomatik 67059095 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 102.06 1.14 Dichtomatik 67058971 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 102.06 1.14 Dichtomatik 67059030 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 102.31 1.52 Dichtomatik 67059174 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 104.93 1.02 Dichtomatik 67059096 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 105.49 1.52 Dichtomatik 67059175 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 108.1 1.02 Dichtomatik 67059097 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 108.41 1.14 Dichtomatik 67058972 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 108.41 1.14 Dichtomatik 67059031 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 108.66 1.52 Dichtomatik 67059176 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 11.43 1.52 Dichtomatik 67059138 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 11.48 1.14 Dichtomatik 67058986 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 11.56 1.02 Dichtomatik 67059058 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 11.56 1.14 Dichtomatik 67058939 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 111.28 1.02 Dichtomatik 67059098 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 111.84 1.52 Dichtomatik 67059177 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 114.45 1.02 Dichtomatik 67059099 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 114.76 1.14 Dichtomatik 67058973 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 114.76 1.14 Dichtomatik 67059032 Details
cross-section thumbnail Back Ring STU STU 90 NBR NB901801 115.01 1.52 Dichtomatik 67059178 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.