LOCTITE 55 is designed for sealing of metal and plastic pipes and fittings. It needs no cure time and results in an immediate, full pressure seal.

General purpose, threaded pipe and fitting sealant
Non-curing, immediate, full-pressure seal
Allows back-off to align fittings, will not shear and contaminate assemblies
Seals metal and plastic threaded fittings
Plumbing Safety license: AS / NZS 4020:2002 Certificate # 8368 (Potable Water)
Approval: Australian Gas Association (AGA) Certificate # 6007 Class III rated working pressure 2000kPa