Permabond LH055 – PFAS-Free Anaerobic Thread Sealant

Permabond LH055 is a single-component anaerobic adhesive for sealing threaded metal connections. It cures in the absence of air between closely fitting metal surfaces, creating a durable seal with excellent chemical resistance.

Suitable for steel, brass and many other metals, LH055 is ideal for plumbing systems, cooling circuits, pumps, valves and other threaded pipe connections requiring reliable sealing and easy future maintenance.

Its PFAS-free formulation provides a future-oriented alternative to conventional PTFE-based sealing materials. This allows manufacturers to reduce PFAS use throughout their operations and supply chains without compromising sealing performance.

LH055 has a relatively low breakaway torque of 8 Nm on zinc. Threaded components can therefore be disassembled using standard tools without excessive force or heat. The product also helps prevent thread seizure and lubricates the threads during assembly, reducing the risk of cross-threading.

The optimised viscosity ensures complete coverage of the threaded connection. Unlike sealing tapes, LH055 does not produce loose particles that could enter or block valves.

Key benefits:

• PFAS-free and solvent-free
• Easy application and assembly
• Low breakaway torque for simple maintenance
• Excellent chemical resistance
• Prevents thread seizure
• Suitable for various metals
• DVGW gas approval
• KTW-BWGL compliant
• WRAS drinking-water approval
• No loose particles that could block valves