Delivering Fluid Sealing Solutions Since 1972

Sealing Washers

The UK’s specialist supplier of Sealing Washers

M Barnwell Services is one of the UK’s largest independent stockists and distributors of Sealing Washers and Seals. With a £3.3 million inventory, expert industry knowledge and 35,000 stock lines we will always offer the right sealing solution for your application.

We provide a vast range of dimensions and a variety of materials including Elastomer and Thermoplastic, Fibre, Steel, Copper Washers, Stainless Steel, Aluminium, Brass, and Cork. In addition we can also support you in creating bespoke designs as well as providing specialist surface finishes.

Types of Sealing Washers we offer:



FLAT WASHERS

Form A to G, Hardened, Chamfered, Heavy Duty
Spring Washer
SPRING WASHERS

Single Coil Rectangular, Single Coil Rectangular with Bent Ends, Single Coil Square, Double Coil Rectangular, Crinkle, Curved, Curved Lock, Wavy, Wavy Lock, Conical, Disc
Toothed & Serrated Washers
TOOTH & SERRATED WASHERS

External Toothed, Internal Toothed, External Serrated, Internal Serrated, For Countersunk Screws
Tab Washers

TAB WASHERS

External and Internal, Long and short, Single long Tab
Tapered Washers

TAPERED WASHERS

D, Square, U and I Shape

Construction Washers


CONSTRUCTION WASHERS

For information about our range of Bonded Washers click here.

For detailed information about our range of Copper Washers click here.

What are Sealing Washers (Shim Washers or Rubber Penny Washers)?

Situated underneath a nut, a joint or an axle bearing the purpose of a Sealing Washer is to soften rubbing, spread pressure, keep components apart, and prevent leakage or stop unfastening. To stop vibration from spreading or to ensure that a seal is stable a rubber compound may be the best solution for the application.

Sealing Washers are ideal for surfaces coated with paint, plating or enamel and suitable for use with water, mineral base oils and alkalis, or over a temperature range of -10°C to +80°C. Washers for screwed assemblies offer an up to 200 lbf/in2 working pressure.

Sealing Washers are extensively used in Automotive & Motor, Water & Pump, EngineeringMRO, Manufacturing Industries and are particularly useful on sumps, gearboxes, axles and drain plugs.

Examples of the production process:

  • Heat treatments: hardening and tempering for alloy steels, annealing for copper, brass, aluminium, brazing
  • Machine processes: blanking, bending, stamping, deep drawing, tapping
  • Finishes: tumble finishing, deburring, polishing, assembly, packaging

Sealing WashersSealing WashersSealing Washers

Some speciality Sealing Washers are certified to FDA, EC1935/2004 & EC2023/2006Wrc, WRAS, USP Class VI, 3-A 18-03 Sanitary Standards and KTW.

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

E & OE.

Sizes

There is no limitation, inch and metric dimensions can be supplied on request.

Types

Flat Washers:
Form A to G, Hardened, Chamfered, DIN126, DIN433, Heavy Duty

Spring Washers:
Single Coil Rectangular, Single Coil Rectangular with Bent Ends, Single Coil Square, Double Coil Rectangular, Crinkle, Curved, Curved Lock, Wavy, Wavy Lock, Conical, Disc

Tooth and Serrated Washers:
External Toothed, Internal Toothed, External Serrated, Internal Serrated, For Countersunk Screws

Tab Washers
External and Internal, Long and short, Single long Tab

Tapered Washers

Sealing Washers

Construction Washers

Materials

Steel, Copper, Stainless Steel, Aluminium, Brass, Red Fibre, Fibre, Rubber, Plastic, Cork, Perfluoroelastomers (FFKM), Polyurethane (AU/EU), Polyamide Nylon PA, Acetal Resin POM, Peek, Polytetrafluoroethylene (PTFE - Virgin and Filled eg Glass, Bronze, Carbon), Nitrile (NBR), Fluorocarbon (FKM/FPM), Ethylene Propylene (EPDM), Silicone (VMQ), Fluorosilicone (FVMQ), Neoprene (CR), Polyethylene (PE), Polypropylene (PP), Phenolic Resin, Hydrogenated Nitrile (HNBR), Copper / Nickel CuNi, Cast Iron (GT) and many more.

Surface Treatments

Burnishing, zinc plating, Nickel, Brass, Tin, PTFE, Phosphate and many more. Contact the team for details

Standards

UN, BA, BSF, BSP, BSW, M, MF, UNC, UNF, DIN7603 A, ISO7089 / DIN125-1A, ISO7091 / DIN126, DIN7349, ISO7092, DIN127B, DIN7980 / BS4464A, DIN137A, DIN137B, DIN93, DIN463, DIN462, DIN432, DIN988, DIN436

Approvals

FDA, EC1935/2004 & EC2023/2006 European Regulations, WRC & WRAS, USP Class VI, 3A 18-03 Sanitary, KTW, DVGW, NSF ANSI, BGVV, KIWA, ACS, EU2002/72, EN681-1, EN549, EN682

Kits

A range of Copper Washer Kits, Red Fibre Kits, Bonded Washer Kits, Sump Washer Kits and Selection Boxes available. Bespoke kits also available upon request.

Associated Products

O Rings, Fasteners, Kits, Grease Nipples, Sealants & Adhesives, Circlips, Retaining Rings