Built for How Business Buys.
Built for How Business Buys.
A replacement O-ring for 13mm hard tube fittings: this one measures 12.5 x 1.5 mm and is for the Alphacool HT 13mm compression fitting, one O-ring per pack.
We also stock an 11 x 3 mm O-ring for the same fitting, so check which of the two you are replacing before you order.