ASTM D (D ) covers multiple properties of O-Rings. Part of the specification includes tension testing for determining the breaking. AMS and MIL-R Type 1 Class 1 Typical Values. Hardness, Shore A, ASTM D 90 ±5. Tensile Strength, psi, ASTM D min. ASTM D Standard Test Methods for Rubber O-Rings.

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These specimens can be tested as whole rings or as straight, cylindrical specimens. ASTM D specifies the procedures for determining the physical properties of o-rings. Glossary ashm Materials Testing Terms.

These materials tend to elongate extensively so attention must be made to the total stroke of the tensile tester.

ASTM D – 15 Standard Test Methods for Rubber O-Rings

The fixture can use interchangeable rollers asfm different sizes. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator.

Subscribe to Instron News! There is also another test that does not require the motorized fixture. Pre-canned test methods are also available for both o-ring and straight specimens to make setup time faster and easier.

Our Series Elastomeric “O” Ring Test Fixtures were designed to accurately meet the requirements, and conveniently avoid the need for lubricants or external power motors. Some advanced calculations including elongation modulus can also be derived from the data. Fixture – The standard specifies a fixture consisting of two spools to hold an o-ring while under test. It is important to review ASTM D in order to fully understand the test setup, procedure, and results requirements.


ASTM D1414 Rubber O-Rings

Next Checking to see if axtm are a returning visitor…. In some cases, a special type of oil qstm be used to alleviate friction between the ID of the O-ring and the grip surface.

Secure gripping – When testing straight specimens or single strands, pneumatic side action grips with serrated or rubber coated faces are the preferred gripping configuration. Our Series or Series universal testing systems can easily be used to perform the tests laid out within this standard. Cracking, flaking, general brittleness, and other characteristics can appear in the rubber O-rings when they are exposed to temperature cycles and solar radiation.

This simple circular elastomer design is interesting since O-rings are used in so many sealing applications. Rings under tension in high temperature environments can experience something called the Gough-Joule effect where they tend to contract in this scenario. Static rubber rings are used for gas sealing and specialized applications including vacuums. The standard sizes that Universal Grip carries are 3.

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In some cases, Instron elastomeric rubber grips have asttm been found to work well. The fixture ships complete with a power adapter for both US and International power outlets. WaveMatrix 2 for Dynamic Testing.

Please d414 that you agree with our privacy and cookies policy to submit this form. The rotation keeps localized stress moments on the sample to a minimum. If your O-ring specimens fall within the allowed criteria, they can be tested with a static fixture. Contact Us View Accessories Catalog.

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By continuing to use our site, you accept our cookie policy. It is recommended that groups of samples are tested and the data is compared using a method similar to Statistical Process Control.

The versatility of an O-ring allows it to function in multiple modalities. Designed for testing elastomeric materials in the form of rings, these fixtures avoid local stress concentrations by using a lower spindle that is rotated by a toothed belt driven from the moving crosshead.

Elongation and tensile strength are the two main calculations. Consideration awtm to be made for the fixture geometry spool separation and diameter as well as specimen geometry. Rubber bands are also commonly tested under this standard to test their tensile strength and elongation characteristics.

The xstm gripping force prevents specimen slippage while under test. Email addresses can only contain letters, numbers and the following special characters: We use cookies to improve your browsing experience.

The upper spindle rotates freely and the rotation frequency of the lower spindle is easily selected by moving the toothed belt from one pulley to another.

Top top grip has a counterweight to allow for asstm loading. Concrete, Asphalt and Rock. How can we help you?

x1414 The challenges of testing to this standard: Alongside Gough-Joule, quality managers may age their rubber specimens inside an environmental conditioning chamber to test other parameters.

Specimen gripping Specimen slippage Calculations Our solutions: Email addresses must contain the symbol.