This specification covers a polysulfide (T) rubber sealing compound with nonchromated corrosion inhibitors supplied as a two-component system which cures at room temperature.
This product has been used typically for contact with air pressures, fuels and water, but usage is not limited to such applications. Each application should be considered separately. Polysulfide (T) rubber has a service temperature range of -65 to +250 degrees F (-54 to +121 degrees C), with short term recurring exposures (approximately 6 hours) to 360 degrees F (182 degrees C). It can be used for aerodynamic smoothing, cabin pressure and fillet sealing and fastener overcoating.
Revise Tensile/Elongation requirements after dry heat cycle exposure to be consistent with other specifications with similar operating temperature ranges. Heat cycle was changed from Rev A to Rev B without testing to ensure qualified products met requirements. Return specific gravity requirement to earlier revision as qualified products do not meet lower values.