SMS Fittings


SMS unions (swedish Manufacturing Standard) are recognised by the round slotted nut and square section joint ring.

Comprising of a nut, male, liner and square section seal.


The SMS Union is designed for use in applications that don’t require regular dismantling.

However they have the advantage of being suitable for removal of adjacent pipe sections without disturbing other joints.

All wetted parts are grade 316 stainless steel whilst the nut is 304.

Joint rings are EPDM as standard and also available in viton and PTFE.



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