British Gaskets Ltd provides a comprehensive range of materials for processing into Gaskets and Rubber Moulded components.

Gasket Materials

The manufacture on high temperature Mica laminated materials are manufactured under tight controls at our Sudbury Manufacturing site. We also offer our own range on Non-Asbestos gasket materials that are formulated to the latest requirements. High quality compressed sheets for gaskets made of mineral fibre, aramide and dispersed inorganic loads mixed in a matrix of type SBR rubber.

This material has got exceptional flexibility and behaviour on cutting what add to its characteristic of under-control swelling in oils making a material with good suitability for the automotive industry and machinery construction for general use. It has good resistance to compression, excellent adaptability and low gas permeability.

Rubber Materials

Over the last 80 years British Gaskets Ltd have developed over 600 compound formulations and manufactured components in all the common thermoset rubbers such as SBR, Neoprene, EPDM, Natural, and Nitrile; also in highly specialised polymers.

Many of these materials are produced with in the group using bespoke equipment: These include: K4 internal mixer, mill room & test laboratory; injection and compression presses from 20 tonnes to 500 tonnes capacity; and composite bonding of rubber to metal, plastics and fabrics. Some of which are listed below:


ASTM Classification Polymer Type (Common Brand Names) ACM
Polyacrylate AEM Acrylic ethylene
BIIR/CIIR Halo-butyl CSM
Chlorosulphonated ECO Epichlorohydrin
FFKM Perfluoroelastomer (DuPont™ Kalrez® and 3M™ Dyneon™ FFKM) FKM
FVMQ Fluoroelastomer (DuPont™ Viton® and 3M™ Dyneon™ FKM) Fluorosilicone
HNBR Hydrogenated nitrile PU
Polyurethane VMQ Silicone
XNBR Carboxylated nitrile

British Gaskets Limited have developed a seal to be used on the Solar Orbiter that is due to fly closer to the sun than any previous craft has ever been. Take a closer look by clicking this link: http://>

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Rubber Sheeting and Compound.

Mastite Rubber products include all of the standard, and many of the non-standard, elastomeric materials produced today. Our Moulding and Compounding manufacture facility includes a comprehensive range of equipment for processing materials and moulding rubber components. These include: K4 internal mixer, mill room & test laboratory; injection and compression presses […]

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Harvested from the Cork tree, our supplies of this material come mostly from the western Mediterranean area. Although the raw material is replenished. (as the tree continues to grow another layer of cork bark after the harvest), the management of this truly natural product — used since the Roman times, […]

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NASB Gasket Material Range.

British Gaskets NASB brand of of materials include Non-Asbestos gasket material, Graphite, PTFE, Mica and Mica laminate. We stock a huge range of NASB materials. Our NASB materials are widely used in the heavy diesel engine, automotive and railway industries. These materials were developed especially with our customers in mind, […]

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