Vulcanised Fibre Gaskets and Seals

Vulcanised fibre is a dense cellulose-based material manufactured from chemically treated cellulose fibres to create a strong, homogeneous non-metallic sheet material.

It contains no conventional synthetic resin binder and provides a useful combination of toughness, electrical insulation and sealing performance.

One of the distinctive characteristics of vulcanised fibre is its ability to swell when exposed to water.

In suitable joint designs, this controlled swelling can help improve sealing contact, making vulcanised fibre particularly useful for water-based plumbing and heating applications.

Yes. Vulcanised fibre is particularly well suited to many water-based sealing applications.

The material begins to swell when exposed to water, which can help create a reliable seal between mating surfaces in applications such as taps, pipe connections and flanges.

Vulcanised fibre behaves differently from impermeable plastics or rubber because it absorbs moisture and swells when exposed to water.

This characteristic is actually beneficial in many traditional water-sealing applications, where controlled swelling helps the gasket maintain contact with the mating surfaces.

Yes. Vulcanised fibre provides good electrical insulating properties and has a long history of use in electrical equipment.

Precisely cut components can be used in switches, electrical assemblies, cable clamps, insulating pads and other applications requiring non-metallic electrical separation.

Bluemay Weston’s commercial vulcanised fibre material has a stated heat resistance of approximately 100°C.

Actual suitability depends upon the material grade, gasket thickness, mechanical load, exposure time and operating environment, so applications involving sustained elevated temperatures should be reviewed before manufacture.

Vulcanised fibre can provide effective sealing in correctly designed joints, particularly in water-based applications, but suitability for pressure sealing depends upon the pressure, temperature, fluid, gasket thickness and joint design.

Applications involving demanding pressure conditions should therefore be assessed according to the complete operating environment.

Vulcanised fibre offers useful resistance in many general industrial environments, but it should not be considered universally chemically resistant.

Suitability depends upon the particular chemical, concentration, temperature and duration of exposure. Where aggressive chemicals are involved, an alternative material such as PTFE may be more appropriate.

Vulcanised fibre is firmer and less elastic than rubber and is particularly useful for water-based sealing, electrical insulation and thin, durable gasket applications.

Rubber materials provide greater elasticity and compression recovery and may therefore be preferred where the gasket needs to accommodate significant surface variation, movement or repeated compression.

Vulcanised fibre is generally tougher and more mechanically durable and is particularly useful for water-based sealing as well as electrical insulation.

Presspahn is primarily an electrical insulation material used for thin barriers, separators and protective components where lightweight electrical isolation is the main requirement.

Vulcanised fibre is a cellulose-based material that does not rely on a synthetic resin binder and is particularly suited to water-based sealing and electrical insulation.

SRBF is a fabric-reinforced phenolic laminate offering greater rigidity and good mechanical wear characteristics. The appropriate material depends upon whether sealing behaviour, electrical insulation, rigidity or mechanical performance is the principal requirement.

Yes. Vulcanised fibre gaskets and seals can be supplied with self-adhesive backing where required.

This can assist with positioning during assembly and help retain the gasket before the joint is finally secured or compressed.

Yes. Bluemay Weston manufactures bespoke vulcanised fibre gaskets and seals to customer drawings, dimensions, samples and specifications.

Components can be produced as simple rings and rectangular gaskets as well as complex profiles incorporating apertures, fixing holes, slots and other features.

Bluemay Weston manufactures vulcanised fibre gaskets and seals from sheet material using precision punching and water jet cutting techniques.

Punching provides an efficient manufacturing method for suitable repeat production quantities, whilst water jet cutting is particularly useful for prototypes, lower-volume production, larger components and complex profiles where dedicated tooling may not be appropriate.

Bluemay Weston can manufacture vulcanised fibre gaskets and seals in quantities ranging from prototypes and small development batches through to high-volume production runs of many thousands or millions of components, depending on component size, material specification and customer requirements.