Delivering Fluid Sealing Solutions Since 1972

Aflas® Seals UK

Aflas® Seals UK (TFE/P) – O Rings & Gaskets Specialists

M Barnwell Services are the largest independent manufacturer, stockist and distributor of fluid sealing products in the UK. We stock and supply a range of Aflas® Seals (TFE/P) that are designed for many applications in industries such as Aerospace and Defence, Chemical, General Industrial Environments, and Offshore Drilling.

We provide the most diverse material options in the market and can supply Aflas® Seals (TFE/P) in many sizes for specialty performance. Combine that with our team of experts and we will offer you the right seal for your application.

Aflas® Seals Logo

Aflas® is a form of Fluoroelastomer (copolymer of Tetrafluoroethylene-Propylene), which is known for its great overall resistance to a wide range of chemicals including alkalis, amines, methanol, acid, and steam. It’s the material of choice for products and systems that need to operate in rather rough conditions. Therefore, they are used worldwide in all sorts of industrial applications where utmost reliability is demanded, along with the elastic features of synthetic rubber. It is established on an alternating copolymer of tetrafluoroethylene and propylene.

 Aflas Seals

Aflas Seals Grades:

  • AFLAS® 100 Series – high molecular scale gives high mechanical durability. Adequate for transfer moulding, compression moulding, and extrusion. The texture is identical to that of AFLAS® 150 below
  • AFLAS® 150 Series – exquisite electrical insulation features and chemical resistance. Convenient for transfer moulding, compression moulding, and extrusion
  • AFLAS® 300 Series – translucent white base resin with a unique termonomer. Can be pigmented, has superior durability and gives a sleek surface finish. Suitable for extrusion
  • AFLAS®400E (development grade) – with new ‘rapid cure’ technology. Can be pigmented. Suitable for extrusion
  • AFLAS® 600X (development grade) – with new ‘rapid cure’ technology. Eminent tear strength, compression set, and superior mould release. Perfect for high temperature (HPHT) and high-pressure applications in rough environments where 25 years of service life is demanded. Suitable for compression moulding.

FEPM Chemical Resistance

If you would like more information about our range, download our catalogue, visit the Seal Maker Page or contact a member of the team.

E & OE.


Tetrafluoroethylene-Propylene (TFE/P), FEPM, Aflas®


No limitation to dimensions

Temperature Range

between -10°C and 205°C (intermittent/compound-specific between -20°C and +250°C)

Shore Hardness

70 - 90 Shore A



Key uses

Aerospace, Oilfield, Chemical Processing, General Industrial, Semiconductor


O Rings and Gaskets, Wire and Cable, Automotive Oil Seals, Manufacture of liquid crystal and Semiconductors


Mechanical Properties: Excellent permeation resistance, Good wear resistance, Moderate compression set resistance, Moderate short-term resilience, Eminent electrical insulation features with a volume resistivity of 1016 Ω·cm.

Recommended for: Di-ester lubricants, Vacuum, Steam, Most acids/solvents, Petroleum oils/fuels, Amines (ammonia), Halogenated hydrocarbons, Bases.

Not Recommended for: Low molecular esters and ethers, Ketones (MEK), Auto-aircraft brake fluids, Acetone, Skydrol, Ethyl acetate.