Delivering Fluid Sealing Solutions Since 1972

NES 337 O Rings

NES 337 O Rings: Defence Standard for Naval Ships & Submarines

M Barnwell Services NES 337 O Rings are MOD approved to Defence Standard 02-337. These are used on UK Ministry of Defence Surface Ships and Submarines and their associated systems and equipment. Applications include hydraulics, lubrication systems, fuel systems and pneumatics.

M Barnwell Services provides a complete range of NES 337 O Rings in Nitrile (NBR) and Fluorocarbon (FKM) elastomer materials. For high-pressure air systems a Hydrogenated Nitrile (HNBR) elastomer material has been developed. This specialist elastomer material offers improved service life compared to the standard Nitrile (NBR) material.

The range of O Rings are available on short lead times and all manufactured to order, ensuring a new cure date.

M Barnwell Services’ materials approved for use by UK MOD under Defence Standard 02-337 (NES 337):

Medium Nitrile – 60, 70, 80 & 90 IRHD

High Nitrile – 60, 70, 80 & 90 IRHD

Fluoroelastomer – 70 IRHD

NATO Stock Numbers List – Oil Seals
NATO Stock Numbers List – O Rings

NES 337 O Rings

For more information download a catalogue or contact a member of our expert team today.

For more information on our range of O Rings, please click here.