IMPA: 812612

Slow Drying Non-Hardening Gasket Sealant – Marine Grade

This slow-drying, non-hardening gasket sealant is designed for marine environments where vibration and thermal expansion demand a flexible, resilient seal. It fills surface irregularities on flanges and joints, creating a leak-proof barrier without the need for retightening. Ideal for shipboard maintenance, it simplifies gasket installation and ensures dependable performance in harsh conditions.

The paste remains permanently pliable, allowing parts to be disassembled easily even after long service. It exhibits excellent adhesion to metal, plastic, and rubber surfaces and resists oil, water, antifreeze, diluted acids, and common marine fluids. Use it on water pumps, oil pans, timing covers, gearboxes, and pipe flange connections.

Supplied in convenient brush-top cans and tubes, this compound is a versatile addition to any vessel's repair kit. Meets IMPA specification 812612, ensuring it meets the needs of professional ship chandlers and vessel operators.

Key Features

Technical Specifications

PropertySpecification
Product TypeGasket Sealant
FormPaste
ColorRed
BaseSynthetic Rubber Resin
Viscosity100,000 cP
Drying TimeSlow (Non-Hardening)
Service Temperature-65°F to 400°F (-54°C to 204°C)
Shelf Life24 months
IMPA Code812612

Frequently Asked Questions

Does this sealant fully harden?

No. The formula remains non-hardening and flexible, making disassembly and resealing easier.

What temperatures can it withstand?

It is rated for continuous use from -65°F to 400°F (-54°C to 204°C), suitable for marine engine and above-waterline applications.

Can it be used on all gasket types?

Yes, it works with cork, rubber, paper, and composite gaskets, as well as direct metal-to-metal joints.

How should I apply it?

Clean the surfaces, apply a thin uniform coat using a brush or applicator, and assemble parts before the sealant dries.

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