Permabond LM012 Unfilled, Medium Viscosity Anaerobic Adhesive

Product Name

Permabond LM012 Unfilled, Medium Viscosity Anaerobic Adhesive

Brief Description

Permabond LM012 is a high-performance, unfilled, medium viscosity anaerobic adhesive specifically engineered as a thread sealant. It is designed for use in hydraulic systems and on metal pipe fittings, curing at room temperature to form a durable, leak-proof seal. Its unfilled nature ensures it will not clog hydraulic screens or valves if accidentally spilled into the system.

Popular Applications & Uses

- Sealing hydraulic and pneumatic systems- Sealing metal pipe fittings and threaded connections- Preventing leaks in high-pressure installations- Securing bolts in pressure components- Thread sealing to the burst rating of pipes- Replacing conventional sealants like dopes and tapes- Protecting threads from corrosion- Preventing loosening of threaded assemblies due to vibrations and shocks

Industries that Commonly Use It

- Aerospace/Defense- Automotive Service/Repair- Chemical Industry- Energy (e.g., power plants, petrochemical facilities, wind turbines)- General Manufacturing- Metal Fabrication- Transportation/ Specialty Vehicle

Special and Unique Features

- Unfilled resin formula prevents clogging in hydraulic screens and valves, making it safe for sensitive hydraulic systems- Compatible with hydraulic fluids- Meets MIL-S-22473 Grade HVV and ASTM D5363 AN 0163 standards for military and industrial use- Cures at room temperature- Offers excellent chemical and temperature resistance- Solvent-free, non-shrinking, and non-cracking formulation- Provides directional freedom during assembly

Key Properties

- Chemical composition: Methacrylate esters- Appearance: Brown- Viscosity @ 25°C: 2,000 mPa.s (cP) (medium viscosity)- Maximum Gap Fill: 0.2 mm (0.008 in)- Maximum Thread Size: M20 (¾”)- Handling Strength: Approximately 30 minutes at 23°C (73°F)- Full Cure Time: 24 hours- Temperature Range: -55°C to 150°C (-65°F to 300°F)- Torque strength (M10 steel ISO10964) Break: 3 N·m (25 in.lb)- Shear strength (steel collar & pin ISO10123): 5 MPa (750 psi)- UV fluorescence: Yes

Surface Compatibility

- Primarily designed for threaded metallic pipe joints- Bonds effectively with active metals such as steel, copper, and its alloys, leading to faster cure times- Cures slower on passivated surfaces like stainless steel, zinc, and aluminum- Not recommended for use on plastic components- Optimal performance is achieved on clean, dry, and grease-free surfaces; suitable solvent-based cleaners (e.g., acetone, isopropanol) are recommended for surface preparation

Known backups / known substitutes

- Permabond A905 or ASC10 Activator can be used to accelerate cure speed, particularly on inactive metal surfaces- Other Permabond anaerobic thread sealants, such as LH050, LH050 Pure, and LH051, serve as alternatives for general purpose pipe sealing- General anaerobic adhesive alternatives from other manufacturers may exist, but direct cross-references for LM012 should be verified through trials

Comparison Note

Permabond LM012 distinguishes itself from conventional pipe sealants by being an unfilled resin, which is crucial for hydraulic systems as it prevents the adhesive from clogging delicate screens and valves if excess material is squeezed out. It offers a reliable, durable, and leak-proof seal that can withstand the burst pressure of pipes, providing an effective alternative to traditional mechanical sealing methods like PTFE tape, oakum, or gasket paste, and locking mechanisms such as lock washers or cotter pins. The adhesive also provides controlled torque for easier disassembly when required.