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Semi Metallic > Metal Jacketed Gaskets
The metal provides the strength and the resilience of the gasket and the non-metallic component provides the conformable sealing material. These gaskets are suitable for low and high pressure and temperature applications with a wide range of materials available.
Single Jacket
Single Jacket
Single Jacketed
   
   
   
   
Metal Jacketed

Single Jacketed (Styles 120,124)

The filler material is enclosed in a metal jacket which covers the inside and outside diameter of the gasket.

Style 120 has one of its contact surfaces covered and is ideally suited for comparatively narrow flange widths in circular and non-circular configurations.

Style 124 is an overlapped Single Jacketed Gasket, where the filler is completely enclosed on the inside and outside diameters and on both contact surfaces.Style 124 is more suited for high temperature applications of narrow gasket widths. Typical low pressure applications include boilers, compressors, pumps, and diesel and gasoline engines. Style 120 is not recommended for standard pipe flanges.
Minimum flange width 6.4mm (1/4). Nominal gasket thickness 3.2mm (1/8).
Typical Application

Used on low pressure lightly bolted flanges with limited flange width. Pump case gaskets have been a traditional usage for this product.
Solid Corrugated
Solid Corrugated
Solid Corrugated
   
   
   
   
Metal Jacketed

Solid Corrugatged (Style 100, 102, 129)

As the name suggests, the Solid Corrugated gasket is comprised solely of metal and does not contain any non-metallic fillers in its construction. The temperature limitation of the gasket is therefore only affected by the metal selected.
The corrugations provide multi-seals across the face of the gasket. A minimum of three corrugations is recommended and gasket thickness is approximately 50% of the corrugation pitch. Pitch corrugations can be 3.2mm (1/8), 4.8mm (3/16) or 6.4mm (1/4). Typically used for high temperature applications and applications involving steam, water, gas, oil, etc. up to 1000 psi for Style 129 and 102, and up to 500 psi for Style 100
Typical Application

Used on higher temperature applications where the limitations of filler restricted usage Corrugations do provide some additional sealing at lower stress. Used less these days as the improvement of using a Flexpro design and soft faced products.
Double Jacketed
Double Jacketed
Double Jacketed
   
   
   
   
Metal Jacketed

Double Jacketed (Style 123, 126, 127)

The filler material is completely enclosed by a two piece metal jacket, which covers both the inside and outside diameters and both contact surfaces. Style 126 is similar to Style 123 with the exception that the metal jacket is formed from a corrugated jacket providing better resilience than the Style 123, since the corrugations form multi-seals across the flange sealing face. Style 127 is a double shell gasket constructed of two reversed wrap-round shells. This provides handleability and better resistance to high pressures.

Double Jacketed Gaskets are used on boiler and heat exchanger applications when ample bolting is available to correctly seat the gasket. They are designed for high pressure and temperature applications up to and inclusive of Class 900. The temperature limitation of the gasket is dictated by the combination of metallic and non-metallic materials used in its construction. Gasket widths as narrow as 8mm (5/16) can be manufactured dependent on diameter. Very large gasket diameters can also be produced. Nominal gasket thickness is 3.2mm (1/8). Gaskets can be manufactured with either integral or welded pass partition bars, in a variety of complex configurations. Some of the most common pass bar configurations are shown on the product data sheet hyperlink below.
Typical Application

Used on higher pressures on ample bolted flanges with sufficient flange width. Heat exchanger gaskets have been a traditional usage for this product. Used less these days as the improvement of using a Flexpro design.
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Metal Jacketed Gaskets