This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist.This specification covers a permanently mastic polysulfide compound in the form of a paste.This product has been used typically for sealing or resealing integral fuel tanks designed for groove-injection type sealing for use from -65 to +250 mDF (-54 to +121 mDC), with intermittent use of 300 mDF (149 mDC).