During the 1960's, WCL began to manufacture compression rubber mouldings to complement its gasket facilities.  A wide variety of materials is now available in moulded or extruded form.

Where size, shape and tolerances prevent the use of sheet materials, rubber mouldings and rubber extrusions can provide the solution.


  • WCL produces rubber mouldings in a range of hardnesses from 30 shore to 90 shore (+/- shore tolerance applies)


  • Special compounds and colours can be developed to suit customer requirements

Also available

  • Rubber to metal bondings
  • WRAS & FDA approved materials in nitrile, neoprene, EPDM and natural rubber
  • Rubber Roller Covering - refurbishing and re-covering of industrial rollers.

Tolerances used for moulding in the rubber industry.

Acknowledgement: The following extract is taken from the introduction to the British Standard BS3734 - Dimensional Tolerances of Solid Moulded Rubber.  The dimensional tolerances stated in this International Standard may be wider than those used in some other engineering practices.  The following considerations apply:

Rubber Mouldings

Rubber Extrusions

  • All rubber shows some shrinkage after moulding, and allowance for this is made in the mould design. The amount of shrinkage is dependent on the rubber and the mix used, but also varies from batch to batch of the same mix.
  • Non-rubber parts bonded to the rubber will affect the shrinkage and, therefore, the practicable tolerances.
  • Moulds are made in various ways depending on the type of product and the accuracy required.  In general, the product can be no more accurate than the mould; the greater the degree of accuracy demanded, the more expensive the moulds and their maintenance will become.
  • Care should be taken in applying the standard tolerances to products having wide sectional variations.
  • In cases where the rubber product is unavoidably distorted during the removal from the mould, the dimensions may be affected and special allowance may be needed.

WCL will be happy to evaluate your requirements and advise on the tolerances achievable.

Rubber Extrusions

Rubber Mouldings

  • Extruded rubber products require greater tolerances in manufacture than those produced by rubber moulding, since the rubber undergoes die swell and, during subsequent vulcanization, shrinkage and deformation usually occurs.
  • Deformation can be reduced by the use of supports during vulcanization, the nature of the support depending on the section being produced and the degree of control required. Such features determine the class of tolerance applicable to given dimensions.
  • There are 11 classes of tolerance for extrusions in solid rubber, related to particular ranges of dimensions. WCL will be happy to advise on those applicable to your design requirements.
  • Sponge rubber extrusions are also available.

Rubber Mouldings

A summary of the rubber mouldings we produce at Whitby & Chandler can be seen below. If you would like more information on any of these products, please feel free to contact us.

  • Rubber
  • Rubber mouldings
  • Rubber Fuel Tank Seals
  • Rubber Gaiters
  • Rubber Grips
  • Rubber Grommets
  • Rubber Handles
  • Rubber High Tension Lead Covers
  • Rubber Hoses
  • Rubber Housings
  • Rubber Knobs
  • Rubber Lip Seals
  • Rubber Matting
  • Rubber Packing Seals
  • Rubber Pads
  • Rubber Pedal Covers
  • Rubber Pressure Rollers
  • Rubber Pressure Rolls
  • Rubber Pump Gaskets
  • Rubber Pump Seals
  • Rubber Sleeves
  • Rubber Spacers
  • Rubber Straps
  • Rubber Strips
  • Rubber Transit Boots
  • Rubber Valve Pads
  • Rubber Valve Seals
  • Rubber Vibration Absorbers
  • Rubber Washers
  • Rubber Wheels
  • Rubber Wiper Seals
  • Rubber Wipers
  • Silicone Rubber Mouldings
  • Natural Rubber Mouldings
  • Nitile Rubber Mouldings
  • Viton (DuPont) Rubber Mouldings
  • Aerospace Rubber Mouldings
  • Soft Rubber Mouldings
  • Bonded Rubber Mouldings
  • Mouldings Rubber
  • Mouldings Silicone
  • HNBR Mouldings
  • Moulded EP rubber
  • Moulded Silicone
  • Moulded Rubber Components
  • UK Rubber Manufactures
  • Custom Moulded Rubber
  • EPDM
  • Fluorosilicone
  • Custom Rubber Mouldings
  • Mouldings Silicone Rubber
  • Neoprene Rubber Mouldings
  • Moulded Neoprene
  • Manufactures of Silicone Products
  • Moulded Rubber Gaskets
  • Rubber Moulding Manufacturers
  • Rubber Moulding Producers
  • Moulded Rubber O rings
  • Rubber Blocks
  • Rubber Extrusions
  • Rubber Moulded Products
  • Rubber Pads
  • Rubber Mats
  • Rubber Moulding - bespoke
  • Rubber Moulds - to specification
  • Rubber to Metal Bonding
  • Rubber Converters
  • Rubber Moulds
  • Food Quality rubber
  • Rubber Cord
  • Rubber Products
  • Rubber Components