IB Series

ISO B couplers made to the ISO 7241:2023 Series B Standard

AKJia’s IB Series ISO B couplers are the ideal choice where a tough, durable product of superior quality is required. They are perfectly suited to agricultural and industrial applications.


  • Carbon steel with trivalent plating (Zinc nickel plating available with IBZ Series)
  • Fitted with Nitrile seals -NBR (Viton seals – FKM available)
  • Also available in stainless steel (See IBS Series)
  • Also available in brass (See IBB Series)
Datasheet Inquiry
IB and IBZ Series ISO B Quick Couplings


  • Carbon steel with trivalent plating
  • Optional zinc nickel plating provides corrosion resistance (500 hours with no red rust in salt spray tests)
  • Poppet valves have balanced springs
  • Locking ball system allows quick connection
  • Bidirectional flow


  • Agricultural
  • Construction plant
  • Mobile equipment,
IB Series drawing


The IB series is a quick connector according to the ISO7241 Series B standard, which fully complies with the dimensional requirements, working pressure, etc. of the ISO7241 Series B. Commonly used in hydraulic tools and hydraulic systems.

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)