Metal Gaskets
These provide solid, coated, filled and jacketed gaskets in any metal – from aluminum and copper to Inconel and stainless steel.
SHIM STOCK
- Supplied in rolls of: 610mm, 305mm, and 150mm wide.(Available widths dependent on material).
- Thickness: From 0.025mm in various increments up to 0.5mm.
These gaskets are designed and widely used for heat exchangers, pressure vessels, gas mains, valve bonnets and similar services. This metal jacket provides the mechanical strength to contain the filler and is selected from a material that is suitable to resist chemical attack from the fluid to be sealed as well as the operating temperature.
Metal jacketed gaskets are available in a comprehensive selection of materials and are custom-built to client’s specific design requirements and are almost without any size limitations. A durable protective coating is applied on every soft iron gasket to resist rusting in storage.
The type ‘R' oval configuration is the original ring joint design and was followed by the type ‘R’ octagonal which offered more specific contact sealing areas.
Both types can be used with flanges having the standard ring joint flat-bottom groove and held of flanges by the specified amount, relying entirely on correctly applied initial bolt load for the proper operation in service. Gasket metal should be selected to suit the service condition and should be of hardness lower than the flange metal. The annealing process of the metal is carefully controlled to keep the hardness of the gasket below the maximum allowable hardness to ensure proper flow and sealing without damaging the flange surfaces.
Constructed of alternate plies of pre-formed metal and soft non-metallic fillers.
The metal winding of the gasket is formed into a chevron configuration allowing superior resiliency and self-adjustment when compared to conventional gaskets.
Spiral wound gaskets are available to order in almost any combination of component materials.
Spiral wound configuration:
Style CRIR: Inner ring & outer ring with a winding.
Style CR: Outer ring and winding.
Style RIR: Inner ring with a winding.
Style R Graflex Faced: Winding with graphite finish on eiter side.
Style R: Winding only.
Type HTX for heat exchangers
CMG gasket, also known as a 104G, is a metal reinforced gasket that utilises a corrugated solid steel core, laminated with flexible graphite facing layers on both sides. Commonly used for heat exchangers and pressure vessels, Piping flanges, with pressure ratings up to and including Class 300 / PN 40.
- Pressure up to 40 Bar.
- Temperatures up to 450°C.
- Good blow-out resistance.
- Can be fitted to inner and/or outer cleats.
- The soft facing layer prevents damage to the flange.
MACHINED SHIMS / SHIM KITS
Precision alignment of sensitive equipment, our pre-cut stainless-steel shims are supplied in five different sizes and thicknesses.
- Supplied in packs of: 10, or in a purpose-designed aluminium carry case.
- Thickness: 0.05mm to 2.0mm.
MRG gaskets, also known as type 108, is a metal ring with expanded graphite on both sides of the surface. Can be manufactured from a range of core materials. The graphite sealing layers can also be substituted with other soft facing materials such as PTFE, Mica or compressed non-asbestos fibre gasket materials.
Typically used in heat exchangers with complex pass partition bar configuration. The low load requirements on the MRG gasket make them ideal replacements for compressed non-asbestos fibre gaskets and metal jacketed gaskets in heat exchanger applications.
The soft facing layer prevents damage to the flanges, providing a high integrity seal including thermocycling and shock-loading conditions. Can be refurbished with a new facing layer and reused. Kammprofiles can be manufactured in a very wide variety of sizes and shapes according to customer design requirements.
It is one of the most widely used metals for commercial purposes. In its pure state sheet, copper is easily bent by hand or hammered which is why it is often used for gaskets.
Excellent for head gaskets, as they will not react with water or corrode easily.
The main features which give copper its signature qualities can be categorised by the alloy used, the hardness of the copper (temper), finish and gauge.
- Silver in colour.
- Supplied in sheets: 1000mm x 1000mm.
- Thickness: 1.6mm.
- Recommended Maximum Temperature: 800°C.
- Recommended Services: Exhaust manifolds, turbo gaskets.