Delivering Fluid Sealing Solutions Since 1972

SMS Seals

SMS Seals for dynamic and static installations

M Barnwell Services is one of the UK’s leading stockist, distributor, and manufacturer of sanitary seals and gaskets. Our range of SMS Seals (Swedish Metric Standard) is mounted in the housing according to DIN1149.

SMS Seals are FDA, EC1935/2004 & EC2023/2006, and USP Class VI compliant. Grades and materials include Ethylene propylene (EPDM), Viton® (FKM), Silicone (VMQ), Nitrile (NBR), and Polytetrafluoroethylene (PTFE).

Full documentation and certificates can be provided.

SMS Seals are used primarily in the Food and Drink (FDA) Industry (especially milk processing). It has also been proven to work effectively in the Chemical and Pharmaceutical industries.

SMS seals

The SMS relates to Swedish Metric Standard hygienic fitting. It is developed for applications that do not demand constant disassembly of hoses. It contains an internally threaded ring, which has a captive seal intended to ensure sleek, rupture-free inner hollow.

The tightness of this installation system is guaranteed by the captive seal placed into the groove on the part which is pressed by mating part. Manual tightening is adequate to maintain a liquid-tight seal. However, wrench tightening is advisable and recommended to guarantee further contact between components.

It is probably the most common hygienic fitting used globally.

The above information has been derived from numerous sources and the ratings are therefore intended as a guide only. Users must test under their own operating conditions to determine the suitability of any compound in a particular application and temperature.

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

E & OE.


Vast range to suit your application


Ethylene propylene (EPDM), Viton® (FKM), Silicone (VMQ), Nitrile (NBR), and Polytetrafluoroethylene (PTFE)


Swedish (SMS 1586/1588)


FDA, USP Class VI, 3A Sanitary Standards, and EC1935/2004 & EC2023/2006 Regulations