Permabond LH050 PURE Anaerobic Thread Sealant (Potable Water Safe)

Product Name

Permabond LH050 PURE Anaerobic Thread Sealant (Potable Water Safe)

Brief Description

Permabond LH050 PURE is a single-component, white paste anaerobic pipe sealant designed to cure in the absence of oxygen and in contact with metal parts. It is specifically formulated to provide a reliable, leak-proof seal for threaded metal joints in potable water systems, holding NSF/ANSI 61 certification. This sealant effectively seals against water, hydraulic fluids, air, gases, and various chemicals, while also locking threads to prevent loosening due to vibration.

Popular Applications & Uses

- Sealing threaded metal pipe joints, fittings, and plugs.- Preventing leaks in water, hydraulic, air, gas, and chemical systems.- Locking pipes, plugs, or fittings against vibration loosening.- Applications where pipes cannot be fully seated, allowing for directional freedom during assembly.- Potable (drinking) water systems due to NSF/ANSI 61 certification.

Industries that Commonly Use It

- Pool/Spa/Plumbing- Construction/ Building Services- General Manufacturing- Energy- Chemical Industry- Petroleum Industry, Products or Services

Special and Unique Features

- NSF/ANSI 61 Certified: Approved for use in drinking water system components, ensuring safety for potable water applications.- Full Cure Seal to Burst Rating of Pipe: Once cured, the sealant typically exceeds the burst rating of the pipe or fitting.- Instant Seal: Provides an instant low-pressure seal upon assembly, often up to 1,000 psi with hand assembly and 3,000 psi when torqued.- Directional Freedom: Allows for adjustment and proper alignment of pipe joints even if they cannot be fully seated.- Solvent-Free: Does not contain solvents, preventing shrinkage or cracking.- Excellent Chemical and Temperature Resistance: Resists a wide range of chemicals and maintains integrity across a broad temperature spectrum.- Room Temperature Cure: Cures effectively at ambient temperatures.- No Shredding or Blockages: Unlike traditional tapes or dopes, it will not shred or cause blockages in fluid systems.- Disassembly with Normal Tools: Allows for maintenance and disassembly of fittings using standard tools after cure.

Key Properties

- Chemical Composition: Methacrylate esters.- Appearance: White paste.- Viscosity @ 25°C: 250,000 mPa.s (cP).- Specific Gravity: 1.1.- Cure Type: Anaerobic (cures in the absence of oxygen and in contact with metal).- Full Cure Time: Typically 24 hours at 23°C.- Temperature Range (Cured): -55°C to 200°C (-65°F to 392°F).- Instant Seal: Up to 1,000 psi (hand assembly), up to 3,000 psi (torqued to 10 inch-lbs).- Resistance: Water, hydraulic fluids, air, gases, transmission fluid, diesel fuel, ASTM fuel C, steam.- Maximum Gap Fill: 0.5 mm (0.02 in).- Torque Breakaway: 20-50 in-lb.- Torque Prevailing: < 25 in-lb.

Surface Compatibility

- Performs best on clean steel.- Works well on most metals, including aluminum, stainless steel, and brass.- Not recommended for use on plastic components.

Known backups / known substitutes

- Traditional pipe dopes (e.g., Rectorseal No. 5, Slic-Tite, Oatey Great White, Key-Tite).- PTFE (Teflon) tapes.- Other anaerobic thread sealants (e.g., Loctite equivalents, Vitcas Liquid PTFE).

Comparison Note

Permabond LH050 PURE offers significant advantages over traditional pipe dopes and PTFE tapes by providing a full cure seal that often exceeds the burst rating of the pipe, eliminating issues like shredding or blockages in fluid systems. Its anaerobic curing mechanism ensures a robust, durable, and vibration-resistant seal. The NSF/ANSI 61 certification is a critical differentiator, making it safe and approved for potable water applications where many other sealants may not be suitable. Additionally, it allows for directional freedom during assembly and easy disassembly with normal tools, combining strong sealing with practical maintenance considerations.