Static Sealing

Square Ring

Good alternative to o-rings for flange sealing – also under higher pressures, will only slightly deform.   

Square Ring

A Square Ring is a double-acting axial static sealing element, which is a good alternative to the classic o-ring. Due to its square profile, it only gets minimally deformed when put under pressure. This sealing element is very insensitive towards gap extrusion, no back-up ring is necessary even at high pressures and does not twist during installation.

Square rings are ideal for sealing flanges, valves, plates and fasteners and are available in a variety of common elastomer materials. The most common of these would be NBR, FKM, EPDM, CR, VMQ and FVMQ.
Dimensions are available according to AS 568 (inch sizes).  

fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
materials
elastomers
technical data
material NBR
pressure up to 50 MPa (from 50 MPa depending on seal gap)
temperature -30°C / +80°C (material dependent)
speed -
material FKM
pressure up to 50 MPa (from 50 MPa depending on seal gap)
temperature -20°C / +200°C (material dependent)
speed -
material EPDM
pressure up to 50 MPa (from 50 MPa depending on seal gap)
temperature -40°C / +130°C (material dependent)
speed -
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. 

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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