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Back Up Rings / Anti Extrusion Back Up Rings |
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Two Back Up Ring |
One Back Up Ring |
Two Back Up Ring |
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Backup Rings prevent extrusion of O Rings In high pressures usually above 1500 PSI & compensate for loose fitting components.
If only one backup ring is used, the O Ring should be placed between the pressure source & the backup ring.
One backup ring should be used on each side of the O Ring in double acting assemblies if possible two backups should be used even in single acting assemblies. |
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| Construction Materials |
Anti Extrusion Back Up Rings are Manufactured from over 15 different Polymers which include. Nitrile (NBR), Fluorocarbon (Viton®), Silicon (VMQ), Fluorosilicone (FVMQ), Polyurethane, PTFE (Teflon®), Natural Rubber (NR), Ethylene Propylene (EPDM), Hydrogenated Nitrile Rubber (H-NBR), Carboxylated Nitrile Rubber(X-NBR), Styrene Butadiene Rubber (SBR), Perfluoroelastomer (FFKM), Chloroprene (Neoprene®). |
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