
Static Seals
Back-up ring
Additional protection element (without sealing function) to prevent gap extrusion with sealing components. To be used for pressures above 5 MPa.
Back-up ring BE - concave unslotted
The Back-up ring BE has a closed profile with a concave groove. Due to its assembly ease and elasticity, it is particularly suitable for all installations. It has a very good O-ring support at very high und pulsating pressures through the concave design.
Back-up rings are exactly adapted to the groove height. The required groove width increases by the width of the Back-up rings. BE Back-up rings are produced per injection moulding. Standard materials are NBR and FKM, other compounds are available upon request.







material | NBR |
pressure | static up to 30 MPa static linear up to 20 MPa |
temperature | -30°C / +80°C (material dependent) |
speed | up to 0,5 m/s |
material | FKM |
pressure | static up to 30 MPa linear up to 10 MPa |
temperature | -20°C / +200°C (material dependent) |
speed | up to 0,5 m/s |

Your contact person regarding
Technical topics - special designs
Do you have any questions, ideas or suggestions?
We would be happy to advise you.
Personally, by phone or in digital form.
Mr. Andreas Raidt+49 (0) 7034 2518 - 240