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 fixture ships complete with a power adapter for both US and International power outlets. Contact Us View Accessories Catalog. Our Series or Series universal testing systems can easily be used to perform the tests laid out within this standard. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator.
There is also another test that does not require the motorized fixture. Fixture – The standard specifies a fixture consisting of two spools to hold an o-ring while under test.
ASTM D specifies the procedures for determining the physical properties of o-rings. WaveMatrix 2 for Dynamic Testing. The constant gripping force prevents specimen slippage while under test. In some cases, Instron elastomeric rubber grips have also been found to work well. Glossary of Materials Testing Terms.
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. Static rubber rings are used for gas sealing and specialized applications including vacuums.
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.
Top top grip has a counterweight to allow for even loading. The versatility of an E1414 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.
ASTM D Rubber O-Rings – Instron
These materials tend to elongate extensively so attention must be made to the total stroke of the tensile tester. Elongation and tensile strength are the two main calculations. The rotation keeps localized stress moments on the sample to a minimum. Software for Series Systems. Specimen gripping Specimen slippage Calculations Our solutions: It is important to review ASTM D in order to s1414 understand the test setup, procedure, and results requirements.
ASTM D1414 Rubber O-Rings
These specimens can be tested as whole rings or as straight, cylindrical specimens. Rings under tension in high temperature environments can experience something called satm Gough-Joule effect where they tend to contract in this scenario.
Some advanced calculations including elongation modulus can also be derived from the data. Subscribe to Instron News!
Subscribe to Our Newsletters. It is recommended that groups of samples are tested atsm the data is compared using a method similar to Statistical Process Control.
If your O-ring specimens fall within the allowed criteria, they can be tested with a static fixture. The fixture can use interchangeable rollers at different sizes.
Next Checking to see if you are a returning visitor…. Cracking, flaking, general brittleness, and other characteristics can appear in the rubber O-rings when they are exposed to temperature cycles and solar radiation.
Concrete, Asphalt and Rock. Check this box to receive pertinent commercial email from Instron focusing on products, upcoming events, and more! How can we help you? Email addresses can only contain letters, numbers and the following special characters: The standard sizes that Universal Grip carries are 3.
This simple circular elastomer design is interesting since O-rings are used in so many sealing applications. Rubber bands are also commonly tested under this standard to test their tensile strength and elongation characteristics. Pre-canned test methods are also available for both o-ring and straight specimens to make setup time faster and easier. Please confirm that you agree with our privacy and cookies policy to submit this form.
Consideration needs to be made for the fixture geometry spool separation and diameter as well as specimen geometry. The Rubber O-Ring test standard uses a special motorized fixture that rotates at fixed speed throughout the test.
Email addresses must contain the symbol. 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. Secure gripping – When testing straight specimens or single strands, pneumatic side action grips with serrated or rubber coated faces are the preferred gripping configuration.