JACKETED GASKET

A jacketed gasket has a construction composed of a soft filler material that is wrapped by an outer metal layer. Usually, it is two-piece metal construction with a flat layer against the soft facing and a wrap layer that covers both sides to form a complete enclosure to encapsulate the filler. Metal jacketed gaskets are especially suitable for sealing the flat surfaces of heat exchange, cast iron flanges, gas pipes, autoclaves, and similar. They hold good sealing efficiency, provided by exerting strong pressure on circular rims of the flanges. Metal jacketed gaskets can stand up to 30% of deviation from their initial thickness, which is very useful in case of irregular or faulty flange rims. Jacketed gaskets are manufactured in various types to meet the needs of the most demanding applications. The soft filler featured by the metallic jacket has to be selected because of flange surface quality and operating conditions. The gasket jacket could be plain or corrugated. Pass partition bars can be integrally incorporated or welded into the gasket. A jacketed gasket with welded bars offers a price advantage. Jacketed gaskets are also available as frames, oval, or any other shape or construction.

Single Jacket: The most basic form of the jacketed gasket, with coverage on one face and both edges.

Single Jacket with Overlap: Where full coverage is needed and the flange is narrow relative to gasket ID.

Double Jacket: Where full coverage is needed and the flange is wide relative to gasket ID.

Double Jacket with Double Shell: Stronger and more rigid than double jacket gasket.

Double Gasket Corrugated: Corrugations create a labyrinth seal across the gasket face.

French Style Jacket: Provides coverage on one side only (inside or outside) and both faces. A flange is narrow relative to gasket ID.

A metal jacket spreads the temperature and pressure range of the filler. There are five main types of filler:

Non-asbestos

Flexible graphite

Ceramic

PTFE

Corrugated metal

At Smart Engineering and Fasteners our highly knowledgeable team of engineers will guide you through the process of selecting the ideal jacket metal, filler material, and design based on the right balance of performance requirements and cost.

ASME, DIN, ISO