Bachus ORID O ring tester

The results obtained through the use of this device have been consistent and repeatable in our evaluations. However, since a degree of user technique is required we cannot be responsible for specific results.

The results obtained through the use of this device have been consistent and repeatable in our evaluations. However, since a degree of user technique is required we cannot be responsible for specific results.

CMA is the Australian agent for the Bachus ORID, a simple pencil sized tool that can be used to check the material of O-Rings.

Price $128

Purpose

  • Verify an O-ring at moment of installation
  • Check for mislabeled O-rings
  • Verify new O-rings
  • Sorting applications
  • Differentiate between known O-rings
  • Sturdy stainless steel tubular construction is safe to carry in tool boxes
  • Pocket clip for easy access

How The ORID Works:

The ORID itself is a tube with a specific weight inside it. The weight falls a controlled distance. To determine an O-ring’s rubber compound, place the O-ring on a stable table or surface. Place the ORID® over the O-ring and raise the weight all the way to the top of the tube (as far as it will go). Release the weight and let it drop onto the O-ring. It will bounce. The height of the first bounce will rise to one of the four calibrated ranges.

Compatible O-Ring Materials

The height of the FIRST bounce indicates the O-ring material:

  • Highest Graduation — EP ethylene propylene O-rings are compatible with most water based chemicals from -70º F to +300º F or -55º C to 150º C.
  • Third Graduation — NITRILE. Also known as Buna-N. These O-rings are good for most plumbing applications from -30º F to +225º F or -35º C to 105º C.
  • Second Graduation — KALREZ®. Also known as perfluorocarbon, compatible with most aggressive chemicals from 0º F to +600º F or -18º C to 315º C.
  • Lowest Graduation — VITON®. This composition is also called fluorocarbon. Viton O-rings are generally compatible with most petroleum based liquids from -15º F to +400º F or -26º C to 205º C.

Product Manual can be downloaded HERE