Ferrules ISO 1127


Ferrules are produced by turning from 1.4404 (316L) stainless steel bar stock. The surface finish is equal to or more often better than those quoted in the relevant standards. Ferrules are next to the SF1 finish also available with enhanced SF4 surface finish to 0.38 um Ra, this being achieved by electro polishing. Material certification is supplied as standard and all ferrules are part marked with the material grade, mill heat number and the fittings size and name.
Ferrules can also be supplied as specials in a variety of non-standard materials such as special stainless steels, hastalloy C22 etc.


  • Surface finishes SF1 or SF4 
  • Delivered standard with material certificate 
  • Material grade, mill heat number, fitting size and name are marked on ferrule 
  • Other materials like special stainless steel, Hastelloy C22 on request 

Technical information

Sizes DN8 to DN300
Connections Tri-clamp (according to ISO 2852), Weld
Material 316L (1.4404)
Marking Material grade, mill heat number, size and name
Surface finish SF1 or SF4 


3.1 - solid bar


pdfDatasheet Ferrules ISO 1127
English - 550 kB - rev. 01/15