A flame retardant helps inhibit ignition or slow flame spread. Flame-retardant behavior is a property of a particular formulation under specified test conditions; it does not mean that a rubber grommet cannot burn.
Heat resistance and flame resistance
Heat resistance describes performance at an operating temperature. Flame resistance concerns behavior during a defined fire test. A high temperature rating is not evidence of a flame classification, and a material family such as silicone or EPDM does not establish that classification on its own.
Information to specify
- The required test method and classification.
- The compound and part thickness covered by the test evidence.
- Any smoke or other application-specific requirements.
- The operating temperature, environment and mechanical requirements.
Confirm that the proposed compound and part meet the specified fire-performance requirements. Any formulation changes must be reviewed for their effect on both fire performance and the grommet's mechanical properties.
