Back-up Ring is Contoured Back-up Rings
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]
- Construction: Contoured Face; Spiral Back-up Ring
- Shaft O.D. or Ring I.D.: 0.3150 to 8.27
- Design Units: Metric
- Radial X-section: 0.1220 to 0.4843
from Precision Associates Incorporated
PAI Kurv-Bak ™ hard rubber back-up rings can be made in a variety of materials to help prevent early seal failure at higher pressures. Back-up Rings are used for one of two purposes. Higher pressures may be sealed by using back-up rings with standard, or tightened, manufacturing tolerances. [See More]
- Construction: Contoured Face
- Shaft O.D. or Ring I.D.: 0.1090 to 22
- Design Units: English
- Radial X-section: 0.0625 to 0.2500
from Hi-Tech Seals, Inc.
The primary function of anti-extrusion rings is to take up space in a groove, and/or prevent extrusion of material at high pressures. Anti-extrusion rings can also be used to assist seals where exaggerated clearance gaps are an issue. The determining factors when selecting anti-extrusion ring... [See More]
- Construction: Contoured Face
- Sealing Element or Lip Material (ASTM Abbreviation): Fluoroelastomer (FKM) (optional feature) Nitrile (NBR) (optional feature) Polyetheretherketon (PEEK) (optional feature) Polytetrafluoroethylene (PTFE) (optional feature) Polyurethane (optional feature)
- Design Units: Metric