Type BP (Spiral) - BP4900500-PT008
Rectangular cross-section. Consists of two spiral windings which are cut at the ends at an angle of 30° or 45°. Designed for static and dynamic use, but when used in a dynamic application they should be used for reciprocating movements only.
Installation Dimensions:
Bore Diameter DN H8 // Groove Diameter d6 H9 59.8 mm
Groove Width b2 +0.25 9.3 mm
Groove Width b3 +0.25 11.2 mm
Radius, r ±0.2 0.25 mm
Groove Diameter d3 h9 // Rod Diameter dN f7 50 mm
Material Properties:
Maximum Operating Temperature 120 °C
Minimum Operating Temperature -45 °C
Hardness Nominal 55
Hardness Tolerance +/- 5
Hardness Unit Shore D
Color White
Material Type PTFE
Tensile Strength 20 MPa
Elongation at break 250 %
Seal Capabilities:
Min. Temperature -200 °C
Max. Temperature 260 °C
Pressure max., static use 250 MPa
Pressure max., dynamic use, reciprocating 25 MPa
Pressure max., dynamic use, oscillating or rotating 15 MPa
External Sealing (Bore):
Back-up Ring dimensions for internal sealing ID x W x T 50 x 4.9 x 0.85 mm
Material Information for the product(s) on this page
PT008
Colour:
White
Basic Material:
PTFE
Hardness:
55 (Shore D)
Commercial Description:
Unfilled PTFE. This material is standard for back-up rings. Unfilled PTFE helps prevent extrusion in low- to medium-duty applications where an O-ring used by itself would not be suitable.