Vibra-Tite 488 is a thermal reactive paste sealing compound that is used in high temperature and high pressure applications. In the presence of heat, Vibra-Tite 488 will form a mechanical (“mechanical type”) seal. Vibra-Tite 488 does not cement joints together, thus it will not interfere with future repairs of metal-to-metal joints. Vibra-Tite 488 is not affected by thermal cycling.