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, dN f7150 mm
Groove Diameter, d6 H9161.6 mm
Groove Width, b2 +0.2512.3 mm
Groove Width, b3 +0.2515.1 mm
Radius, r ±0.20.25 mm
Material Properties:
Maximum Operating Temperature120 °C
Minimum Operating Temperature-45 °C
Hardness Nominal40
Hardness Tolerance+/- 5
Hardness UnitShore A
Material TypePTFE
Tensile Strength31 MPa
Elongation at break300 %
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
Material Information for the product(s) on this page
PT00
Colour:
White to Offwhite
Basic Material:
PTFE
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.