Back-up Rings are protective and supporting elements with no sealing function. Made from extrusion-resistant materials ,and they
usually have a rectangular cross section and are installed in a groove with an elastomer O-Ring. Due to their tight fit in the
housing, Back-up Rings prevent extrusion of the pressurized elastomer sealing element into the clearance or extrusion gap.
Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and
where there are reciprocating or rotating movements. They also compensate for large temperature fluctuations.
Ask Latest Price
Video Channel