BS4518 O Rings

BS4518 Standard for O Rings – Metric Range

M Barnwell Services stock and manufacturer the full range of BS4518 O Rings in many materials, including, Perfluoroelastomer (FFKM), Nitrile (NBR), Hydrogenated Nitrile (HNBR), Viton™ (FKM/FPM), Viton™ A, Viton™ B, Viton™ GF, Viton™ GLT, Viton™ GFLT, Viton™ ETP, Ethylene Propylene (EPDM), Silicone (VMQ), Polytetrafluoroethylene (PTFE) and Fluorosilicone (FVMQ).

For more information about the BS4518 O Ring range see the BS4518 Size Chart Guide or contact a member of the team.

BS4518 O Rings is a standard produced by the British Standards Institution (BSI). The BS 4518 specification characterizes 203 O Rings by size. Each size is designated by a four-digit number indicating the O Ring Internal Diameter (ID) in tenths of millimetres followed by a hyphen and two digits indicating the O-ring cross-section, also in tenths of a millimetre.

M Barnwell Services are the largest independent manufacturer, stockist and distributor of O Rings and Back-Up Rings in the UK.

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

Sizes

All sizes to match BS4518

Materials

Nitrile (NBR), Viton® (FKM/FPM), Ethylene propylene (EPDM), EnDura™ (Steam Resistant), Silicone (VMQ), Fluorosilicone (FVMQ), ), Viton® A, Viton® B, Viton® GF, Viton® GLT, Viton® GFLT, Viton® ETP

Perfluoroelastomers (FFKM) including: Perlast™, Perlast Ice™, Simriz™, Gplast®, Kalrez®, Chemraz®, and others

Polyurethane (AU), Hydrogenated Nitrile (HNBR), Aflas® (FEPM), Polytetrafluoroethylene (PTFE), Neoprene (CR), Encapsulated (FEP/PFA) Styrene Butadiene (SBR), Anti Explosive Decompression Compounds (AED), Viton Extreme®, Metal Detectable, X-Ray Detectable, & many more.

O-Ring shore hardness - range from 40 Shore to 90 Shore.

O-Ring colours - A range of different colours available, which subject to minimum production quantities

O-Ring installation - Coating to aid lubrication can also be supplied

Approvals

WRC, WRAS, FDA, DVGW, KTW, BGVV, KIWA, USP Class VI, NSF, ACS, EU2002/72, EN681-1, EN549, 3A Sanitary, NORSOK and EN682

Manufacturing Capabilities

Injection Moulded, Compression Moulded, Hot Vulcanised, Room Temperature Vulcanised (RTV), Butt / Scarf Joints, CNC Machined, Cleanroom Prepared

Kits

O-Ring Kits, Selection Boxes, Splicing Kits & Top-up Bags are available

Bespoke O Ring Kits and selection Boxes are also available