MEDIUM-STRENGTH, GENERAL PURPOSE THREAD SEALANT FOR PARALLEL/PARALLEL AND PARALLEL/CONICAL JOINTS. IT FILLS THE SPACE BETWEEN THREADED PARTS, SEALS AND CLAMPS AT THE SAME TIME. LOCTITE® 577 IS DESIGNED FOR FASTENING AND SEALING METAL PIPE AND THREADED METAL FITTINGS. IT PROVIDES INSTANT SEALING AT LOW PRESSURES. IT DOES NOT DEFORM OR SHRINK AND DOES NOT BLOCK THE SYSTEM. IT HAS EXCELLENT CHEMICAL AND THERMAL RESISTANCE. THIXOTROPIC NATURE REDUCES MIGRATION OF THE LIQUID PRODUCT AFTER APPLICATION TO THE SUBSTRATE. EXCELLENT CHEMICAL RESISTANCE THREAD SEALANT, MEDIUM STRENGTH, GENERAL PURPOSE, FOR METAL THREADS CURES ON ACTIVE AND INACTIVE METALS NSF REGISTERED CATEGORY P1 NO. 123001 DVGW CERTIFIED AND COMPLIES WITH EN 751-1: DVGW CERTIFICATION REG. NO. NG-5146CQ0312 EASY APPLICATION INSTANT LOW PRESSURE SEAL SUITABLE FOR ALL METALS PREVENTS LOOSENING AND LEAKAGE CAUSED BY IMPACT AND/OR VIBRATIONS