IBS Series

Stainless steel ISO B couplers made to the ISO 7241:2023 Series B Standard dimensions

AKJia’s IBS Series stainless steel ISO B couplers incorporate all the benefits of the carbon steel IB Series couplers, while being perfectly suited for corrosive fluids and environments.


  • AISI 304 stainless steel and AISI 316 Available
  • Fitted with Viton seals – FKM (Other seals available onrequest)
  • Also available in brass (See IBB Series)
  • Also available in carbon steel (See IB Series)
Datasheet Inquiry
IBS Series Stainless Steel ISO B Quick Couplings


  • Poppet valves have balanced springs
  • Locking ball system allows for quick connection
  • Bidirectional flow


  • Corrosive fluids and environments
  • Marine
  • Oil and gas
  • Chemical
  • Pharmaceutical
  • Nuclear
IB Series drawing


IBS Series the ISO B Quick Coupling with the stainless steel material, suited for corrosive fluids and environments. Complied with ISO 7241 Series B Dimension requirements

ISO 7241:2023

Available Seals and Temperature Range

All carbon steel products have Nitrile Butadiene Rubber (NBR) seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) (FKM) seals fitted as standard. Special seal materials are available on request.

Abbreviation Trade Name Chemical Name Min. Temp Max. Temp
NBR, XNBR Chemigum®,  Hycar8,  Breon®,  Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® Nitrile Butadiene Rubber
Carboxylated Nitrile Rubber
-40ºC (-40ºF) 106ºC (223ºF)
FKM(FPM) Dai-el®, Fluorel®, Tecnoflon®, Viton® Fluoro-elastomer Rubber -20ºC (-4ºF) 200ºC (392ºF)
EPR, EPDM Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® Ethylene Propylene Copolymer
Ethylene Propylene Terpolymer
-50ºC (-58ºF) 120ºC (248ºF)
FVMQ Silastic 1S®, FSE® Fluorosilicone Rubber -65ºC (-85ºF) 170ºC (338ºF)
FFKM Perlast®, Kalrez®, Chemraz®, Kaflon® Perfluoroelastomer -25ºC (-13ºF) 300ºC (572ºF)