Electrical Gaskets

We manufacture and supply gaskets and seals for the electrical and electronics industries, specifically for electrical transformers, SF6, lighting, marine lighting and window gaskets in electrical applications.

We regularly manufacture gaskets for sealing and ventilating electrical enclosures, pads for supporting printed circuit boards, mounting gaskets for LCD displays, light and heavy duty switchgear component and transformer gaskets for oil filled electrical transformers.

electrical gaskets

Sun setting behind a row of electricity pylons

Electrical Gasketing Materials

Gasket materials commonly used in the electrical sector include: foam, solid, and soft rubbers (EPDM, nitrile, neoprene, silicone, Softchem); cork, nebar cork and EMI rated materials including nickel and silver plated fluorosilicone and low out-gassing silicone.

We offer our customers complete material certification and traceability. Our quality system even allows for customers to control how their parts are manufactured.

Sealing Electrical Enclosure Boxes

Gaskets types used on electrical enclosures include: door gaskets, front panel, access panel, gland plate and connector gaskets. Glass or plastic windows on electrical products and components require effective sealing (especially those in extreme marine and weather environments).

Electrical enclosures require longevity but exposure to UV, ozone, temperature, chemicals and mechanical wear can all effect the life of the enclosure and the gasket sealing it. Many enclosures require ventilation to minimise condensation, which is where gasketing can also have an important role to play. Selecting the right material for the application is crucial. Door latching on enclosures are a further example of where material choice is critical. The gasket material chosen must be properly compressed, with enough even pressure to seal but not so much that the gasket is over-compressed. We ensure that the correct part is supplied for the right application, with the shelf life and requirement of the gasket correctly specified.

Electrical enclosures often also require screen seals. Screen seals are typically window shaped gaskets, but can be manufactured from many different materials to different sizes and densities. Generally speaking anywhere that a glass or plastic screen appears on an electrical enclosure, a weather seal is required.

External enclosures require seals to withstand weather including the weather fluctuations of hot desert countries, high rainfall or frost and snow. We are experienced in sealing enclosures in different climates and can advise accordingly.

Materials For Electrical Enclosure Environmental Protection

Protection Type Material Used
Dust and falling dirt Open or closed cell foams, with/without self-adhesive backing. Low density rubber.
Dust, dirt, dripping/light water splashing Closed cell foams.
Windblown dust, falling dirt, water (rain, sleet, snow and ice formation). Closed cell foams.
Indoor/Outdoor, falling dirt, windblown dust, water (rain, sleet, snow and ice formation). Closed cell foams.
Indoor/Outdoor enclosure, falling dirt, settling airborne dust, lint, fibres and flying debris. Protects against water (rain, sleet, snow, splashing water and hose directed water and ice formation). Closed cell foams, Cork
Indoor/Outdoor enclosure, falling dirt, settling airborne dust, lint, fibres and flying debris. Protects against water (rain, sleet, snow, splashing water and hose directed water and ice formation). Vibration/movement. Cork – various types including nitrile cork, neoprene cork.
Indoor/Outdoor enclosure, falling dirt, water (hose directed water and entry of water during prolonged submersion at a limited depth and ice formation). Closed cell foams low and mid durometer elastomers (soft rubbers). Cork
Indoor enclosure (w/o knockouts, 12K w/knockouts), falling dirt, settling airborne dust lint, fibers and flyings. Water – dripping and light splashing). Closed cell foams. Cork
Indoor enclosure, falling dirt, settling airborne dust, lint, fibres and flying debris. Also protects against water (dripping and light splashing). Some protection against spraying/splashing/seepage of oil and coolants. Chemical compatible closed cell foam. Silicone, nitrile, neoprene, polypropylene…..
SF6 – Gas Insulated Transformers Cork, Nebar and Nitrile blends. Closed cell foams with/without SA backing.
EMI Shielding, silver, nickel and carbon fillers. EMI rated gasket materials, Silicone, Fabric over foam, Fluorosilicone, EPDM. Low-outgassing silicone, Dense silicone 20 SH to 80 SH Hardness, Nickel-plated graphite and Silver plated Copper, Aluminium and Nickel.
Transformer Gaskets Nitrile, nitrile cork.
Enclosure and screen seals/gaskets Soft rubbers, self-adhesive foams, silicone, paper.


Lighting is another industry where electrical gasketing is often required. We have worked to support designers and engineers creating new lighting solutions and large installations using innovative lighting concepts.

In addition to environmental seals for lighting products, we have supplied seals for access hatches for engineers to gain critical access in high risk environments.

We typically supply weather seals, adhesive strips, packings, anti-vibration, high temperature and fire-rated materials for this kind of application.

    Our Commitment to Quality

    We pride ourselves on our commitment to quality and we are certified to:

    • BSI ISO 9001: 2015
    • BSI ISO 14001: 2015

    We hold the ADS SC21 Bronze Award certification for supplying into the defence and aerospace industries.