Type BU (uncut) and BG (cut)

Rectangular cross section. For static and dynamic use. Reciprocating and rotating movements possible. Material: PTFE. Back-up Rings are installed together with 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.

Seal Capabilities

  • Size Range: 8 mm to 210 mm
  • Temperature: -200 °C to 260 °C
  • Pressure (max): 25 MPa

Material Information for the product(s) on this page 

PT00

Material Data Sheet (PDF) Only available for the registered users.
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.

PT008

Material Data Sheet (PDF) Only available for the registered users.
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.
Product No. Material Rod Diameter, dN f7 (mm) Groove Diameter, d6 H9 (mm) Groove Width, b2 +0.25 (mm) Price
(per piece)
Quantity
(pieces)
Total
Amount
Availability