Loctite 515 Flange Sealant 50ml

Loctite 515 Flange Sealant (50ml) is a medium-strength, purple anaerobic gasketing compound engineered for maximum efficacy in sealing rigid flange joints. This industrial-grade adhesive permanently eliminates leaks, preventing costly fluid loss and machinery downtime caused by vibration, thermal movement, or minor flange flexing. Whether you are securing pumps or transmission housings, this premium flange sealant provides a robust, leak-proof seal on all metals—including aluminum and steel components.

Why Choose Loctite 515 Perfect Seal?

• Form-In-Place Performance: Cures flexibly between closely fitting metal surfaces to form an exact, perfect seal that eliminates the need for pre-cut paper or rubber gaskets.
• Metal Substrate Specialization: Optimized specifically for rigid, machined metal components like steel and aluminum flanges.
• Excellent Gap Filling: Fills gaps effortlessly up to 0.25 mm, correcting surface irregularities or minor scratches across mating faces.
• Versatile Fluid Resistance: Provides an impervious barrier against standard industrial fluids, oils, lubricants, and transmission fluids.
• Wide Thermal Range: Maintains its mechanical integrity and sealing properties across an operational temperature range of -65°F to 300°F (-54°C to 150°C).

Technical Specifications

• Product Type: Methacrylate-based Anaerobic Flange Sealant
• Strength: Medium (6 N/mm² Tensile Shear Strength)
• Color: Purple
• Container Size: 50ml
• Viscosity: 150,000 - 375,000 mPa.s (High Viscosity)

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external flange surfaces with a suitable Loctite cleaning solvent to remove residual oil, old gasket material, and debris, then let dry.
2. Apply: Apply a continuous bead of the liquid purple flange sealant to one flange surface.
3. Assemble: Assemble and bolt the components tightly as required. The formula will begin curing once it is confined between metal surfaces in the absence of air.

Frequently Asked Questions (FAQ)

What is Loctite 515 used for?

Loctite 515 is a medium-strength anaerobic gasketing product designed for machined, rigid metal flanges. It is specifically formulated to prevent assemblies like pumps, thermostats, compressors, transmission housings, and axle covers from leaking due to high-pressure fluids and vibration.

Can Loctite 515 be disassembled?

Yes. Although it forms a tough, reliable seal, it remains flexible enough that components can be separated using standard hand tools. Any remaining residue can be removed with a gasket scraper or solvent.

Does Loctite 515 work on plastics?

No. Loctite 515 is an anaerobic adhesive, which means it requires both the absence of air and the presence of active metal ions to cure properly. It is highly effective on metal surfaces, particularly aluminum and steel, but will not cure on plastic substrates.

How should Loctite 515 be stored?

To ensure a maximum shelf life, store the product in its original unopened container in a dry location. The optimal storage temperature range is between 8°C and 21°C. Storing the sealant below 8°C or above 28°C can adversely affect its properties.