Back-up rings, type BU NBR

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Long description	Back-up rings are used in combination with O-rings. Support rings of the BU type consist of polyurethane or PTFE, which is a harder material than the O-ring itself. We advise reducing the extrusion gap to 0 mm at very high pressures.
Product details	Supports rings should never be mounted on the pressure side Note: The dimensions d and S below are the O-ring dimensions
Application range	O-Ringe
Properties	Sehr flexible Stützringe Hohe Verschleißfestigkeit
Technical info	Stützringe werden nie auf der Druckseite montiert