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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The rotation keeps localized stress moments on the sample to a minimum. 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 Rubber O-Rings – Instron
It is important to review ASTM D in order to fully understand the test setup, procedure, and results requirements. Contact Us View Accessories Catalog.
Next Checking to see if you are a returning visitor…. The versatility of an O-ring allows it to function in multiple modalities.
Bluehill LE for Basic Testing. Our Series or Series universal testing systems can easily be d114 to perform the tests laid out within this standard.
Glossary of Materials Testing Terms.
Elongation and tensile strength are the two main calculations. Fixture – The standard specifies a fixture consisting of two spools to hold an o-ring while under test. Subscribe to Our Newsletters.
ASTM D – 15 Standard Test Methods for Rubber O-Rings
If your O-ring specimens fall within the allowed criteria, they can be tested with a static fixture. Top top grip has a counterweight to allow for even loading.
The standard sizes that Universal Grip carries are 3. The challenges of testing to this standard: The Rubber O-Ring test standard uses a special motorized fixture that rotates at fixed speed throughout the test. Alongside Gough-Joule, quality managers may age their rubber specimens inside an environmental conditioning chamber to test other parameters. 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.
Secure gripping – When testing straight specimens or single strands, pneumatic side action grips with serrated or rubber coated faces are the preferred gripping configuration.
The fixture can use 1d414 rollers at different sizes. It is recommended that groups of samples are tested and the data is compared using a method similar to Statistical Process Control.
Pre-canned test methods are also available for both o-ring and straight specimens to make setup time faster and easier. These materials tend to elongate extensively so attention must be made to the total stroke of the tensile tester.
Rings under tension in high temperature environments asfm experience something called the Gough-Joule effect where they tend to contract in this scenario. There is also another test that does not require the motorized fixture. ASTM D specifies the procedures for determining the physical properties of o-rings. In some cases, Instron elastomeric rubber grips have also been found to astj well.
Email addresses can only contain letters, numbers and the following special characters: WaveMatrix 2 for Dynamic Testing. Subscribe to Instron News! 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.
ASTM D1414 Rubber O-Rings
This simple circular elastomer design is interesting since O-rings are used in so many sealing applications. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. Check this box to receive pertinent commercial email from Instron focusing on products, upcoming ast, and more! Please confirm that you agree with our privacy and cookies policy to submit this form.
The fixture ships complete with a power adapter for both US and International power outlets. Concrete, Asphalt and Rock. Some advanced calculations including elongation modulus can also be derived from the data. Static rubber rings are used for gas sealing and specialized applications including vacuums. Software for Series Systems. Consideration needs to be made for the fixture geometry spool separation and diameter as well as specimen geometry.
How can we help you? Specimen gripping Specimen slippage Calculations Our solutions: 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.
The constant gripping force prevents specimen slippage while under test. Rubber bands are also commonly tested under this standard to test their tensile strength and elongation characteristics.