Automotive seals and transport sealing solutions

automotive seals

A wide variety of Automotive seals are used throughout today’s vehicles. These include O-Rings that withstand high pressures in shock absorbers, sophisticated gaskets in electronic control units (ECUs), safety critical custom-molded components in braking systems and seals that withstand extreme temperatures, pressures and aggressive media in fuel injectors.

We are one of the UK’s leading suppliers in fluid seals. We offer products for series production and aftermarket as well as heritage and past-production parts. With over 40 years experience in the Sealing industry, our group supplies a wide range of sealing products for cars, motorcycles, motorsport, light duty vehicles, buses, trailers, trucks, trains and other heavy duty vehicles. We offer specialist, high-performance automotive seals, O-rings and gaskets that meet the demands of oxygenate-rich gasolines, harsh engine oils and high engine temperatures. Our products are compliant with RoHS, REACH and Conflict Mineral 3TG, ELV.

Automotive seals are supplied with Level 3 PPAP documentation, along with CPK and PPK controls.

Our extensive Automotive seals portfolio includes a wide range of seals:

Viton FKM O-Rings O-Rings and PTFE Sealsbonded seals
Bonded Seals
gasketsCustom Mouldings / Extrusionsbespoke rubber mouldingsGaskets
rubber bellowsRubber Bellows (Boots)oil-seals rotary shaft seals

Rotary Shaft Seals
mechanical seals
Mechanical Seals
wiper sealsWiper Seals / Scraper Seals

Read our Automotive Case study


Automotive sealing materials

We offer a range of materials from Nitrile through to specialist grades of Viton®, HNBR and FFKM (Perfluoroelastomers). We can also supply RoHS/REACH compliant materials. Below are some examples of materials and suggested applications:

This table provides a general guide on material recommendations. Eastern Seals (UK) Ltd continues to source new materials in accordance with Automotive customer specifications in conjunction with our manufacturers around the world. Eastern Seals (UK) Ltd may source their products from a variety of Quality Approved Suppliers and the data shown should not be relied upon by any purchaser without verification of material source.

-10°C to +204°COutstanding resistance to high temp dry air and coolants. Good oil and fuel resistance.

Limited low temp flexibility.
Coolant resistant seals and cylinder liner seals.
Ethylene Acrylate
(AEM / Vamac®) and Polyacrylate (ACM)
AEM: -25°C to +170°C

ACM: -32°C to +149°C
Outstanding resistance to oils, automotive transmission fluids (ATF) and power steering fluids. Good resistance to high temp, wear, oxidation and ozone.

Limited resistance to water, steam, fuel, gasoline and automotive brake fluids.
Pump-to-case seals, clutch seals, transmission cover seals and fluid transfer seals.
Ethylene Propylene
Peroxide Cure:
-60°C to +150°C

Sulphur Cure:
-40°C to +135°C
Outstanding resistance to ozone, weathering, steam and hot water.

Excellent resistance to brake fluids, ketones, alcohols and other aggressive solvents.

Not recommended for use in petroleum fluids.
Battery seals, sensor seals, bumpers, isolators, sleeves, water / coolant resistant seals, radiator pump seals, environmental seals and cylinder liner seals.
(Viton®, FKM, FPM)
-25°C to +204°C
(Special compounds available: -40°C to +230°C)
Wide-spectrum chemical resistance and broad temperature range. Excellent high temp resistance. Commonly used in fuels and oils. Bio fuel and coolant resistant versions are also available. Good ozone and weathering resistance.

Low resistance to brake fluids.
Cover seals, cylinder liner seals, sensor seals, cap seals, oil pan seals and steering system seals.
-60°C to +177°CRelatively wide temperature range as silicone with good low temp capability and excellent chemical resistance. Good resistance to petroleum oils, hydrocarbon fuels, lubricants and petroleum-based greases.

Not recommended for dynamic applications.
Sensor seals, cap seals and compressed natural gas resistant seals.
Hydrogenated Nitrile (HNBR)-40°C to +150°CSimilar to nitrile with improved high temperature capabilities and ozone resistance. Excellent resistance to thermo-oxidative ageing.

Excellent resistance to petroleum-based fluids. Excellent mechanical properties and wear resistance. Compatible with HFC refrigerants, oil soluble and water soluble substances.

HNBR with low ACN content is not recommended for gasoline, CFC refrigerants and aggressive solvents.
Shock absorber seals, oil pan and cover seals, power steering seals, water pump seals, cap seals, sensor seals, bumpers, isolators, sleeves, under bonnet applications, HFC refrigerant resistant seals and oil filter seals.
Nitrile / Buna-N
-40°C to +110°CGood general purpose elastomer. Good mechanical properties when compared with other elastomers. Excellent resistance to petroleum-based fluids. High wear resistance. Relatively low ozone and weather resistance.Transmission and engine cover seals, sensor seals, steering seals, anti-drain back valves and oil filter seals.
-25°C to +316°CExtreme high temp capability. Excellent resistance to the broadest range of chemicals. Limited low temp flexibility.

Not compatible with fluorinated refrigerants or other fluorinated chemicals.
Turbo charger seals and exhaust system seals.
(PTFE / Teflon®)
-200°C to +250°CLowest friction co-efficient and has self-lubricating capabilities. Chemically Inert PTFE resists the most aggressive organic and inorganic chemicals and solvents over a broad temperature range.Air conditioning, thermal management, fuel
injection and exhaust gas recirculation.
Standard Compound:
-55°C to +204°C

Special Compounds:
-100°C to +204°C
Excellent choice for environmental seals. Wide temperature range and good resistance to dry heat. Good ozone and weather resistance as well as good insulating properties. Relatively limited wear resistance and low resistance to fuels and oils.

Not recommended for dynamic applications.
Cover seals, sensor seals, battery seals, cap seals, bumpers, isolators, sleeves, steering system seals, anti-drain back valves, oil filter seals and environmental seals.

Our manufacturers’ facilities also operate cleanrooms for the manufacture of elastomer components used in automotive equipment and other applications requiring a high standard of cleanliness.

The automotive market includes a variety of sealing applications, often found in critical locations. These products encounter numerous challenges, therefore understanding elastomer behaviour is crucial for selecting the correct automotive seal. Our technical team are available to offer advice on various automotive sealing applications and materials.

For more information on our Automotive range of sealing products, download our latest Automotive Sealing Solutions brochure. To discuss your application needs further, please call our Technical sales team on +44 (0) 1670 840529 or email

Free delivery on web orders over £100.00*

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