Static Sealing

Back-up Ring

Additional protection element (without sealing function) to prevent gap extrusion with sealing components. To be used for pressures above 5 MPa.

7

Back-up Ring BU – unslotted

Closed rectangular profile for split grooves ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
PTFE, PTFE with filling material
technical data
material
PTFE
pressure static up to 250 MPa
linear up to 40 MPa
rotatory up to 15 MPa
temperature -200°C / +260°C (material dependent)
speed linear up to 0,5 m/s
rotatory up to 2 m/s
product details

8

Back-up Ring BG – slotted

Slotted rectangular profile, assembly ease for closed grooves ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
PTFE, PTFE with filling material
technical data
material
PTFE
pressure static up to 250 MPa
linear up to 40 MPa
rotatory up to 15 MPa
temperature -200°C / +260°C (material dependent)
speed linear up to 0,5 m/s
rotatory up to 2 m/s
product details

102

Back-up Ring BS - spiral form

Spiral supporting element, assembly ease for all groove designs ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
PTFE, PTFE with filling material
technical data
material
PTFE
pressure static up to 250 MPa
linear up to 40 MPa
rotatoy up to 5 MPa
temperature -200°C / +260°C (material dependent)
speed linear up to 0,5 m/s
rotatory up to 2 m/s
product details

9

Back-up Ring BB – concave unslotted

Closed profile with a concave groove for split grooves ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
PTFE, PTFE with filling material
technical data
material
PTFE
pressure static up to 250 MPa
linear up to 40 MPa
rotatory up to 15 MPa
temperature -200°C / +260°C (material dependent)
speed linear up to 0,5 m/s
rotatory up to 2 m/s
product details

101

Back-up Ring BC - concave slotted

Slotted profile with a concave groove, assembly ease for closed grooves ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
PTFE, PTFE with filling material
technical data
material
PTFE
pressure static up to 250 MPa static
linear up to 40 MPa
rotatory up to 15 MPa
temperature -200°C / +260°C (material dependent)
speed linear up to 0,5 m/s
rotatory up to 2 m/s
product details

103

Back-up Ring BE - concave unslotted

Elastomere, closed profile with a concave groove for split grooves ...
product details
fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
main use
protective element for elastomeric sealants against gap extrusion
materials
elastomers
technical data
material
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
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
product details

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