Polytetrafluoroethylene (PTFE- Teflon®, etc.) Back-up Rings

6 Results
Back-up Ring -- BTM
from Hi-Tech Seals, Inc.

Back-up rings are plastic or rubber rings used to prevent the O-ring from entering the clearance gap. When high pressures are exerted on the O-ring its soft rubber material can be forced into the clearance gap caused the O-ring to extrude. The hard back-up ring material will keep the O-ring material... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE)
  • Design Units: Metric
  • Construction: Contoured Face (optional feature); Spiral Back-up Ring (optional feature)
4330 Series Back-Up Rings
from Greene, Tweed & Co.

Greene, Tweed ’s new 43 back-up ring series has been specifically designed for use in AS5857 gland configurations as anti-extrusion devices in conjunction with O-rings, packings or other elastomeric seal types. A variety of high-performance materials can be provided and specifically targeted... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE)
Back-Up Rings - Type BU/BG
from Trelleborg Sealing Solutions Germany GmbH

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... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE)
  • Design Units: Metric
  • Construction: Contoured Face; Spiral Back-up Ring
  • Shaft O.D. or Ring I.D.: 0.3150 to 8.27
Metric Back-Up Rings -- G Series
from T-LON Products, Inc.

T-LON PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing systems. The amount of this extrusion is affected by O-ring hardness, operating temperature, operating pressure and clearance of the mating surface. Increased Pressure: The use of Back-up Rings should be considered... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE); T-LON Variants
  • Shaft O.D. or Ring I.D.: 0.9843 to 12.99
  • Design Units: Metric
  • Ring Thickness: 0.0748
Metric Back-Up Rings -- P Series
from T-LON Products, Inc.

T-LON PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing systems. The amount of this extrusion is affected by O-ring hardness, operating temperature, operating pressure and clearance of the mating surface. Increased Pressure: The use of Back-up Rings should be considered... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE); T-LON Variants
  • Shaft O.D. or Ring I.D.: 0.1181 to 15.75
  • Design Units: Metric
  • Ring Thickness: 0.1024
Solid Back-Up Ring -- 27595 Style
from T-LON Products, Inc.

T-LON PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing systems. The amount of this extrusion is affected by O-ring hardness, operating temperature, operating pressure and clearance of the mating surface. Increased Pressure: The use of Back-up Rings should be considered... [See More]

  • Sealing Element or Lip Material (ASTM Abbreviation): Polytetrafluoroethylene (PTFE); T-LON Variants
  • Shaft O.D. or Ring I.D.: 0.0800 to 15.5
  • Design Units: English
  • Radial X-section: 0.2360