MASTERS® A-PLUS® is a general purpose anaerobic pipe thread sealant. It has superior sealing and locking properties compared to tapes and non-hardening pastes.

MASTERS® A-PLUS® seals to moderate pressure almost instantly and to 250psi steam pressure in approximately 24 hours. Once curing is complete, it can withstand temperatures from –65ºF to 400ºF (-54ºC to 204ºC).

MASTERS® A-PLUS® is known for its excellent performance on stainless steel pipe and is commonly used where vibrations are prevalent, making it suitable for production line applications. It lubricates during assembly and hardens in the threads.


  • Make sure threads are clean.
  • Apply a bead around male threads, leaving the first thread free.
  • Tighten fittings properly using a wrench.
  • Allow 24 hours minimum in ambient temperature to cure for maximum pressure and chemical resistance.

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