Delivering Fluid Sealing Solutions Since 1972

Mechanical Seals

Mechanical Seals Supplies UK – For virtually any application

M Barnwell Services Mechanical Seals are one of the most effective ways of sealing rotating shafts, consisting of two lapped faces arranged perpendicular to the axis of the rotating shaft (which gives rise to the alternative name Radial Face Seal, Pump Seals or Packings).

One face is fixed to the equipment casing or vessel, while the other is fixed to the shaft and so rotates with it. Frictional heat generation and wear are controlled by maintaining a film of lubricant between the seal faces. As such, mechanical seals resemble thrust bearings.

These Seals have durability and are of the highest quality. The benefits include, reduced wear, reduced heat generation, lower energy consumption, reduced maintenance requirement, tighter control of shaft leakage, true reduction of costs.

We also stock a wide range of specialist Cartridge Seals.

Mechanical Seals

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

As an alternative to Mechanical Seals, M Barnwell Services also provides a range of quality PTFE Shaft Seals.


Vast range to suit all types and sizes of pumps & compressors.


Conical Spring, Elastomeric Bellows, Parallel Spring Diaphragm, Balanced Diaphragm, Parallel Spring O-Ring Mounted, PTFE Wedge, Wave Spring, Water Pump Seals, Cartridge Seals, Agitator Seals, Mixer Seals


Standard Face Materials - Carbon, Stainless Steel, Tungsten Carbide, Ceramic, Silicone Carbide, Ni-Resist

Standard Seat Materials - Carbon, Silicone Carbide

Other materials available upon request


AES, John Crane, Sealol, Flexibox, Vulcan, Burgmann, Cyclam, Roplan, Garlock

Associated Products

Gland Packing, Gaskets, Encapsulated O-Rings, O Rings, FFKM O Rings, FKM/FPM O Rings, Circlips, Springs