Usit-Rings are commonly referred to as screw gasket seals or flange connection seals. They consist of a flat, metallic disc and a rubber bulge on the inside or outside. The metallic disc is available in both steel and stainless steel, the rubber seal can be delivered in either NBR or even Viton.

Our range of dimensions offers both metric as well as inch sizes.


Material choice at a glance


Raw materialDesignationTemperature range
Nitrile butadiene rubber NBR 70 -30°c     +100°C
Fluoric rubber FPM 70 -20°c     +180°C
Ethylen-Propylen-Dien-Rubber EPDM 70 -40°c     +150°C
Steel AISI 1020  
Stainless steel AISI 304 / ASI 316  

Please download here the detailed technical information!

Catalogue End caps and Usit-Rings
Dimension table Usit-Rings
Datasheet Usit-Rings

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