An o-ring's durometer is the measurement of that specific material's hardness. This scale is also measured by an instrument called a durometer gauge, which uses a spring-loaded rod to indent the material and provide a reading.May 13, 2019
How Do You measure o-ring diameter?
O-rings are measured in millimeters. To measure the outside diameter, use a ruler or calipers to measure from one outer corner of the O-ring to the other outer corner. Measure cross section. Place the O-ring into a vernier caliper. Lightly clamp the jaws of the caliper onto the O-ring, but do not compress it.
What is a 90 durometer o-ring?
Durometer is the international standard for measuring the hardness of objects like rubber and plastic. Harder materials, like 70, 75 or 90 durometer compounds, offer greater resistance to extrusion. ...Oct 20, 2015
Are O-rings measured ID or OD?
The best way to size an o-ring is by measuring the CS (cross-section) and ID (inside diameter). For measuring the cross-section, it is best to use a caliper, a.k.a. micrometer. If you don't have one available, various other sizing tools can be used to get a close estimate.Jul 12, 2016
What is the durometer of an O ring?
70
What is the durometer of Viton?
75A
What is the durometer of rubber?
The Durometer is the International Standard Instrument used to measure the hardness of rubber or rubber-like materials. Durometers measure hardness by the penetration of an indentor into the rubber sample. The calibrated reading is expressed in a number value.
What is 70A durometer?
A rubber durometer of Shore 70A is the most commonly chosen material hardness for all applications.
How do you test a durometer?
- Place the sample on a flat, hard, horizontal surface.
- Hold the durometer between both hands over the sample so that the indentor touches it.
- Push down perpendicularly until the presser foot makes firm contact with the sample.
- Take a reading.
How does a durometer tester work?
Durometer, like many other hardness tests, measures the depth of an indentation in the material created by a given force on a standardized presser foot. This depth is dependent on the hardness of the material, its viscoelastic properties, the shape of the presser foot, and the duration of the test.