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.

fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
materials
elastomers
technical data
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
Maximum values temperature, speed and pressure are simultaneously not applicable! The values vary in dependence of material and media. For technical queries please contact our application consultants – we have the right solution for you. 
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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

ara(a)ulman.de

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