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There are many tests that have been developed to characterize rubber O-rings. Many of these tests are independent of the size of the O-ring being tested. However, there are some tests, specifically, stress/strain properties, that are a function of the O-ring’s size. The purpose of this report is to provide guidelines for specifying O-rings that would be considered “suitable for testing” when writing O-ring material specifications.

This specification covers a silicone rubber material that can be used to manufacture product in the form of sheet, strip, tubing, molded shapes, and extrusions. This specification should not be used to address products such as O-rings, compression seals, O-ring cord, and molded-in-place gaskets.

This specification covers a silicone rubber material that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used to address products such as O-rings, compression seals, O-ring cord, and molded-in-place gaskets.

This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.

This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.

This SAE Aerospace Information Report (AIR) provides a general description of methods for hardness testing of O-rings including factors which affect precision and comparison of results with those obtained in standard tests.

This SAE Aerospace Information Report (AIR) provides a general description of methods for hardness testing of O-Rings including factors which affect precision and comparison of results with those obtained in standard tests.

The purpose of this document is to specify the O-ring sizes that are suitable for quality conformance testing (limited to hardness, tensile tests, compression set, specific gravity, and volume swell per ASTM D1414) required by AMS-7xxx series of specifications. In addition, suppliers and/or users, at their own discretion and/or according to their procurement documents, may choose to invoke this specification for procurement or other purposes for O-ring sizes that are not covered by AS568. If additional tests are specified as quality conformance tests in any AMS-7xxx specification, then that specification shall also specify the required test size for that additional test. This document does not address O-ring size for qualification testing required by AMS-7xxx series of specifications since that is already specified in the AMS-7xxx specification. This document only covers O-ring sizes required by test type. These O-ring sizes include, but are not limited to, AS568-xxx O-ring sizes.

This SAE Aerospace Standard (AS) provides dimensions for a standardized test fixture that can be used to evaluate the dynamic performance requirements defined in some elastomer material standards of O-rings in rod glands per AS4716.

This specification covers a silicone rubber material that can be used to manufacture product in the form of sheet, strip, tubing, molded shapes, and extrusions. This specification should not be used to address products such as O-rings, compression seals, O-ring cord, and molded-in-place gaskets.For these applications AMS specifications in the AMS7XXX series should be used.