Loctite Flange Sealant Gasket Eliminator — Pink 50 mL Tube, High‑Temp (-65° to 400°F)

Loctite 510 Pink Gasket Eliminator is a high-temperature flange sealant in a 50 mL tube designed to replace cut gaskets and create reliable, flexible seals on metal flanges from -65°F to 400°F.

This flange sealant is formulated to bond metal surfaces and cure into a resilient gasket-like material, eliminating the need for pre-cut gaskets in many assemblies. Its pink color helps with visual inspection, and the product is supplied in a convenient 50 mL tube sized for workshop or field use. Loctite engineered this formula for service where temperature extremes, shear loads, and tensile strength are concerns, while maintaining a manageable 24-hour cure profile under typical conditions.

How quickly does Loctite 510 cure and reach service strength?

Typical handling strength develops within hours, and a full cure is normally achieved in about 24 hours at room temperature. Actual cure time depends on bead thickness, substrate, and ambient conditions—thin films cure faster than thick sections.

• Full cure: approximately 24 hours under standard conditions
• Bead thickness affects cure speed—thin beads cure sooner
• Temperature and humidity can accelerate or slow curing

What materials and operating temperatures is this sealant suitable for?

Loctite 510 bonds well to common metal substrates used in flanged connections and is intended for metallic assemblies rather than soft plastics. It is rated for extreme temperatures, allowing use across a broad service window without becoming brittle.

• Compatible substrates: steel, cast iron, aluminum, and similar metals
• Operating temperature range: -65°F to 400°F (-54°C to 204°C)
• Not primarily designed for flexible plastics or continuous immersion without testing

What mechanical performance can I expect from this gasket eliminator?

The product delivers robust shear and tensile performance suitable for many industrial flange applications. Those figures help predict durability under load and the ability to maintain a seal under mechanical stress.

• Shear strength: approximately 725 psi for bonded metal joints
• Tensile strength: approximately 1085 psi
• Forms a flexible, pressure-resistant seal when fully cured

How should I apply Loctite 510 for best results?

Surfaces should be clean, dry, and free of oil, grease, and old gasket material. Apply a uniform continuous bead to one flange face, assemble within recommended time, and allow to cure undisturbed; follow standard safety and handling guidance.

• Prepare surfaces: remove contaminants and dry thoroughly
• Apply: dispense a consistent bead from the 50 mL tube onto the flange face
• Assemble and torque to specification, then allow cure time before full pressurization

Who is this for: Loctite 510 Pink 50 mL gasket eliminator is aimed at mechanics, maintenance technicians, and fabricators who need a reliable high-temperature flange sealant that replaces conventional gaskets in many metal-to-metal applications. It’s useful for shop work, field repairs, and equipment maintenance where temperature tolerance, mechanical strength, and a neat, inspectable seal are important. If you require a small, serviceable tube for occasional repairs or bench work, this 50 mL size balances usability with shelf-life considerations.

• Model Number: HL135538
• Package dimensions: 6.61" length × 2.01" width × 0.98" height
• Tube volume: 50 mL
• Color: pink for visual verification