Each pack contains:
4 x Brass Backnuts
4 x Stainless Steel Circlips
4 x High Temperature Fibre Washers
These are necessary for connecting the fittings to the hose. Once used the circlips can not be re used , these can be bought as spares, which contain 10 clips and washers.
DN12 – 1/2"
DN16 – 3/4"
DN20 – 1"
DN25 – 1.1/4"