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