Slic-tite Paste is a premium, solvent free thread sealant specially formulated with PTFE for added sealing power. This soft-set paste won't shrink or dry out. It has been successfully used for decades to seal water, air, steam, natural gas and more. Slic-tite washes off easily from skin and clothing, so you have less clean up time when the job is done. For use in extremely high pressure systems, Slic-tite comes with several approvals so that the job is completed to code. Recommended for use on metals and plastics, so you only need one thread sealant for many types of jobs.