Make sure its Victrex 450G or 450GL

Peek Back-Ups


KC Seals manufactures the vast majority of our PEEK Back-Ups from rods and tubes that have been molded using Victrex 450G/GL granules. Victrex 450G (unfilled) and 450GL (glass-filled) PEEK materials have been thoroughly tested in conditions that meet and exceed typical exploration and production environments. These materials offer a continuous working temperature of 500°F (260°C) while exposed to hydrocarbons and/or H2S and can maintain their mechanical properties up to 572°F (300°C) in steam. In addition, Victrex 450G polymers comply with NORSOK M710/ISO 23936 test standards; in fact, the materials retained almost all of their tensile strength during each testing phase.

No other PEEK polymer has been so carefully investigated when it comes to the oil and gas sector, and that is precisely why the next time you order your PEEK backups, make sure to ask: “is it Victrex?.”

Design Guide

PEEK Back-up Ring Design Guide

White Papers

  1. Hot and Sour Oil & Gas Environments – White Paper
  2. Victrex 450g Norsok M-710 – White Paper
  3. VICTREX Oil and Gas – Brochure

Quality You Can Rely On


All parts are measured on our Zeiss O-Machine and or Keyence CMM, which utilize optical and contact measurement technology in a comprehensive analysis. The O-Macine includes multi-sensor coordinate measuring, white light sensors for non-contact assessments and extremely accurate 3D scanners.

We follow AQL 2.5 levels 1 and 2 sample size quantities, and all molded parts are manufactured to RMA A2 tolerances. 

What comes with your orders:

  • Every order is sent with either a paper or digital QC document that includes ID, OD, C/S, Height, angles, and any other dimensions your organization feels critical. 


Our rubber and plastic materials supply is diversified amongst the top compounders in North America. Each polymer has been qualified to meet typical exploration and production well conditions, including mechanical, tribological, thermal, and specific immersive properties.

What comes with your orders:

  • Every order comes with an MTR that includes a batch number, cure dates, and a set of mechanical properties.

Available Compounds

Let’s Talk

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