Loctite 518 Flange Sealant 50ml

Loctite 518 Flange Sealant 50ml is a medium-strength, anaerobic red gasketing material engineered for maximum efficacy in sealing close-fitting joints between rigid metal faces and flanges. This industrial-grade adhesive permanently fills gaps up to 0.25mm, preventing costly fluid leaks or pressure loss caused by vibration, thermal expansion, or minor surface irregularities. Whether you are securing transmissions or motor housings, this premium flange sealant provides a robust, leak-proof seal on all rigid metals—including both active and inactive substrates like aluminum, iron, and steel.

Why Choose Loctite 518 Gasket Flange Sealant?

• Instant Seal: Seals instantly against low pressure immediately after assembly.
• Unmatched Versatility: Adapts to flange surface irregularities and cures right through minor surface contamination.
• Chemical & High-Pressure Resistance: Forms a flexible, chemical-resistant seal that will not tear, decay, or suffer from compression set.
• Cost Efficiency: Reduces process and inventory costs by eliminating the need for manual assembly or large stocks of conventional cut gaskets.
• Reliable Service: Maintains a durable seal in heavy-duty environments while still allowing parts to disassemble easily, even after extended use.

Technical Specifications

• Product Type: Anaerobic Flange Gasket / Gasketing Material
• Strength: Medium Strength (Semi-flexible)
• Color: Red
• Container Size: 50ml
• Certifications: NSF P1 Reg. No. 123758
• Tensile Shear Strength: 7.5 N/mm²
• Viscosity: 500,000 - 1,000,000 mPa.s (cP) Brookfield

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external mating surfaces to remove oil and debris, then let dry.
2. Apply: Apply a continuous bead of the gel-type sealant to one of the flange surfaces.
3. Assemble: Assemble and tighten the mating flanges as required. The formula will begin curing once it is confined in the absence of air between the close-fitting metal surfaces.

Frequently Asked Questions (FAQ)

What is Loctite 518 used for?

Loctite 518 is a medium-strength anaerobic gasketing material designed for sealing rigid iron, aluminum, and steel flanged mating surfaces. It is specifically formulated to prevent fluid leakage and pressure drops due to surface irregularities, vibration, or environmental breakdown.

Can Loctite 518 be disassembled?

Yes. Despite its durable, chemical-resistant bond, Loctite 518 is designed so that mating parts disassemble easily with standard hand tools, even after extended periods of heavy-duty industrial service.

Does Loctite 518 work on aluminum?

Yes. Loctite 518 offers robust performance across a wide range of rigid metals. It is highly effective on active surfaces (like iron and steel) as well as inactive surfaces (such as aluminum).

Is Loctite 518 safe for specific industrial food or water environments?

Loctite 518 is registered to NSF P1 (Reg. No. 123758), making it acceptable for use as a sealant in and around food processing areas where there is no possibility of direct food contact.