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Common Technical Names

Detailed below are a list of common technical names which are widely used across the gasket and sealing sector along with their more commonly used name/s.

Technical name Common name
Acrylic Ethylene Co-Polymer AEM
Bromobutyl BIIR
Carboxylated Nitrile XNBR
Chloroprene CR, Neoprene
Chlorosulphonated polyethylene Hypalon/CSM
Epichlorohydrin ECO
Ethylene propylene diene monomer EPDM
Ethylene vinyl acetate EVA
Expanded multidirectional PTFE ePTFE
Fluorocarbon rubber FKM, Viton
Fluorosilicone FVMQ
Hydrogenated acrylonitrile-butadiene rubber HNBR
Isobutylene isoprene Butyl rubber
Nitrile or Buna-N, Acrylonitrile-Butadiene Rubber NBR, Nitrile
Non-Asbestos Fibre CNAF
Nuna-N Nitrile
Perfluoroelasomer FFKM
Phenyl Silicone PVMQ
Polyamide Nylon
Polyethylene foam Plastazote
Polysiloxane Silicone
Polytetrafluorethylene PTFE or Teflon
Polyurethane PU
Polyvinyl chloride PVC
Ring type joints RTJs
Self adhesive backed sponge SAB Sponge
Styrene-butadiene rubber, Buna-S SBR


Information supplied by the UK Gasket & Sealing Association (UKGSA) is intended as a guide. No warranty is given in respect of any information or recommendations by the UK Gasket & Sealing Association and we suggest you contact our Members direct for technical information regarding specific applications, materials or products. Anyone accessing our information must satisfy themselves on the suitability of the materials or product for the intended purpose. The correct fitting of any products is the responsibility of the purchaser.