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
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
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