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BP4900400-PT008

Type BP (Spiral) - BP4900400-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.

External Sealing (Bore):

Back-up Ring dimensions for internal sealing ID x W x T 40 x 4.9 x 0.85  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  %

Installation Dimensions:

Bore Diameter DN H8   //   Groove Diameter d6 H9 49.8  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 40  mm

Seal Capabilities:

Min. Temperature -200  °C

Max. Temperature 260  °C

Static Pressure max. 250  MPa

Pressure max., dynamic use, reciprocating 25  MPa

Pressure max., dynamic use, oscillating or rotating 15  MPa

Type BP (Spiral)

Material Information for the product(s) on this page

PT008

Material data sheet

Colour:

White

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.

Basic Material:

PTFE