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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Bluehill LE for Basic Testing. Top top grip has a counterweight to allow for even loading. In some cases, Instron elastomeric rubber grips have also been found to work well. Some advanced calculations including elongation modulus can also be derived from the data. Cracking, flaking, general brittleness, and other characteristics can appear in the rubber O-rings when they are exposed to temperature cycles and solar radiation. In some cases, a special type of oil may be used to alleviate friction between the ID of the O-ring and the grip surface.
ASTM D1414 Rubber O-Rings
Our Series or Series universal testing systems can easily be used to perform the tests laid out within this standard. Subscribe to Our Newsletters.
This simple circular elastomer design is interesting since O-rings are used in so many sealing applications. There is also another test that does not require the motorized fixture. The Rubber O-Ring test standard uses a special motorized fixture that rotates at fixed speed throughout the test.
Consideration needs to be made for d141 fixture geometry spool separation and diameter as well as specimen geometry. Alongside Gough-Joule, quality managers may age their rubber specimens inside an environmental conditioning chamber to test other parameters. ASTM D specifies the procedures for determining the physical properties of o-rings.
Pre-canned test methods are also available for both o-ring and straight specimens to make setup time faster and easier. Contact Us View Accessories Catalog. The fixture ships complete with a power adapter for both US and International power outlets. Please confirm that you agree with our privacy and cookies policy to submit this form.
Next Checking to see if you are a returning visitor…. Subscribe to Instron News! Software for Series Systems. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. If your O-ring specimens fall within the allowed criteria, they can be tested with a static fixture. The challenges of testing to this standard: It is important to review ASTM D in order to fully understand the test setup, procedure, and results requirements.
These specimens can be tested as whole rings or as straight, cylindrical specimens. Elongation and tensile strength are the two main calculations. The fixture can use interchangeable rollers at different sizes. Glossary of Materials Testing Terms. The constant gripping force prevents specimen slippage while under test. 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.
Specimen gripping Specimen slippage Calculations Our solutions: Concrete, Asphalt and Rock. Fixture – The standard specifies a fixture consisting of two spools to hold an o-ring while under test.
The standard sizes that Universal Grip carries are 3. These materials tend to elongate extensively so attention must be made to the total stroke of the tensile tester. 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.
ASTM D – 15 Standard Test Methods for Rubber O-Rings
Email addresses must contain the symbol. WaveMatrix 2 for Dynamic Testing. Email addresses can only contain letters, numbers and the following special characters: Rings under tension in high temperature environments can experience something called the Gough-Joule effect where they tend to contract in this scenario. Check this box to receive pertinent dd1414 email from Instron focusing on products, upcoming events, and more!
It is recommended that groups of samples are tested and the data is compared using a method similar to Statistical Process Control. Rubber bands are also commonly tested under this standard to test their tensile strength and elongation characteristics.
Static rubber rings are used for gas sealing and specialized applications including vacuums.
The rotation keeps localized stress moments on the sample to a minimum.