BU2000300-PT008

Rectangular cross section. For static and dynamic use. Reciprocating and rotating movements possible. Material: PTFE. Back-up Rings are installed together with Trelleborg O-Rings and Quad-Ring® Seals to prevent extrusion in applications above 5 MPa / 725 psi. Available in spiral, cut, or uncut designs in unfilled PTFE, based on ISO 3601, AS 568.

Installation Dimensions:

Rod Diameter, d_N f730 mm

Groove Diameter, d₆ H934 mm

Groove Width, b₂ +0.255 mm

Groove Width, b₃ +0.256.4 mm

Material Properties:

Maximum Operating Temperature120 °C

Minimum Operating Temperature-45 °C

Hardness Nominal55

Hardness Tolerance+/- 5

Hardness UnitShore D

ColorWhite

Material TypePTFE

Tensile Strength20 MPa

Elongation at break250 %

Seal Capabilities:

Min. Temperature-200 °C

Max. Temperature260 °C

Pressure max., static use250 MPa

Pressure max., dynamic use, reciprocating25 MPa

Pressure max., dynamic use, oscillating or rotating15 MPa

Instruction (PDF) 1

Material Information for the product(s) on this page

PT008

Material data sheet

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.