1740 Down River Dr., Woodland, WA 98674 (360) 225-5400


KC MultiRing Products Inc. Catalog

Below are links to our catalogue in Adobe Acrobat .pdf format for your download.  You will need to have Adobe Acrobat Reader installed on your computer.  Just click on the link but please notice that some sections are larger than others and may take a few minutes to download

If you need any further assistance feel free to contact us at  (360) 225-5400 or  Contact Us

Use our complete catalog link here! 

KCMR Complete Catalogue PDF – 2Mb

Catalog by section in .pdf format below below:

Table of Contents Backing Flanges
Benefits Installation Instructions
Ultra-Pure Gaskets Limited Warranty
General Service Gaskets and Specialty Gaskets Conversions

Flanged joints notoriously have been the weakest link in any piping system. This is especially true, and critical, in ultra-pure water (UPW) systems used in today’s precision manufacturing of semiconductor, pharmaceutical, and bio-technology products.

Some gaskets are “right on size” before installation, but protrude into the stream flow after bolt-up (elastomeric materials). This causes turbulence and dead spots which may provide an area for bacteria to grow, contaminating your water system, and possibly your finished product. Do you know whether the gasket you are currently using protrudes into the stream flow, and may be causing some of your purity problems?

A gasket which is widely used in UPW applications is dark green when installed, but becomes lavender over time. Did you ever wonder where in your UPW system the “coloring” finally ended up, and if this might be causing purity problems?

Other backing flanges concentrate clamping force on the outside of the flange face, rather than on the I.D. of the pipe. This results in a seal on the outside of the flange face, but reduced compression at the most critical point – the I.D. of the pipe. While there may be no externally-visible signs of leakage, this may create an internal breeding ground for costly contaminants along side of the gasket.Did you know that the combination of certain widely used backing flanges and PTFE over EPDM gaskets may allow the medium to come in contact with the EPDM substrate?

Properly installed backing flanges are bolted-up in a “star” pattern. Some piping and valve manufacturers suggest maximum torqueing for each pipe size and also recommend a 4-pass bolt-up. Using a torque wrench, it’s really easy to skip this step, and do a 1- pass bolt-up. Did you know that KC Multi-Ring® has an easy-to-use tool that is calibrated to ensure progressive torqueing on multi-pass tightening AND will cut down on flange installation time and worker fatigue?