IMPA: 811124

Non-Asbestos Graphite Sheet Gaskets – Reliable Sealing for Marine Systems

Our non-asbestos graphite sheet gaskets are engineered for demanding marine sealing applications. Manufactured from high-purity flexible graphite and reinforced with a stainless steel insert (optional), these gaskets deliver exceptional resistance to high temperatures, chemicals, and pressure while remaining completely free of asbestos fibers, meeting modern safety and environmental standards.

Ideal for flange connections, pipe joints, heat exchangers, and valve bonnets in marine propulsion, engine, and piping systems, these gaskets offer superior compressibility and conformability to ensure a tight, leak-free seal under varying operating conditions. Suitable for use with steam, oil, petrol, natural gas, and mild chemicals, they are a versatile choice for ship chandler and ship supply operations.

Available in a range of standard sheet sizes and thicknesses, our graphite gaskets meet the requirements of IMPA 811124 and can be easily cut or die-stamped to your exact specification. Trust in a product that keeps your marine systems running safely and efficiently.

Key Features

Technical Specifications

SpecificationValue
MaterialNon-asbestos flexible graphite (with optional stainless steel mesh insert)
Thickness1/32", 1/16", 1/8", 3/16", 1/4" (0.8 mm, 1.6 mm, 3.2 mm, 4.8 mm, 6.4 mm)
Density1.0 – 1.7 g/cm³
Operating Temperature-200°C to +450°C (-328°F to +842°F)
Pressure RatingUp to 150 bar (2,200 psi), depending on gasket design and bolting load
Sheet Size1.0 m x 1.0 m, 1.5 m x 1.5 m, 2.0 m x 1.0 m (custom sizes on request)
ColorDark gray/black
StandardConforms to IMPA 811124

Frequently Asked Questions

Are these gaskets truly asbestos-free?

Yes, our non-asbestos graphite sheet gaskets are manufactured with 100% asbestos-free materials. They meet current safety standards and are safe to handle and install in marine environments.

What temperature and pressure ratings are these gaskets suitable for?

These gaskets can withstand continuous operating temperatures from -200°C to +450°C and pressures up to 150 bar (2,200 psi), depending on the gasket thickness and flange configuration. They are ideal for high-temperature steam, oil, and chemical service.

What sheet sizes and thicknesses are available?

We offer standard sheet sizes of 1.0m x 1.0m, 1.5m x 1.5m, and 2.0m x 1.0m. Thicknesses range from 1/32 inch to 1/4 inch (0.8mm to 6.4mm). Custom dimensions and die-cut gaskets are available upon request.

Can these gaskets be used for both steam and chemical applications?

Yes, they are excellent for steam, oil, fuel, natural gas, and common marine chemicals. Their chemical resistance and thermal stability make them a versatile choice for various piping and equipment connections on board.

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