Universal, 395-piece, sorted, form A solid copper, aluminum, copper sealing rings (CuFA) form C, O-rings, NBR 70 oil resistant, rubber with inner lip, steel with rubber lip Consists of: Form A solid copper 25 pieces 8 x 12 x 1.0 mm 25 pieces 10 x 16 x 1.0 mm 25 pieces 12 x 18 x 1.5 mm 25 pieces 14 x 20 x 1.5 mm 25 pieces 16 x 22 x 1.5 mm 20 pieces 18 x 24 x 1.5 mm 20 pieces 10 x 20 x 1.5 mm Aluminum 25 pieces 12 x 18 mm 25 pieces 14 x 20 mm 20 pieces 18 x 24 mm 20 pieces 26 x 32 mm Copper sealing rings (CuFA) form C 20 pieces 14 x 20 x 2.0 mm 20 pieces 16 x 22 x 2.0 mm O-rings, NBR 70 oil resistant 25 pieces 18 x 2.0 mm Rubber with inner lip 20 pieces 11 x 21 x 2.5 mm 20 pieces 13 x 22 x 3.0 mm Steel inner with rubber lip 15 pieces 18 x 26 x 1.5 mm 20 pieces 16 x 24 x 1.5 mm Accent color blue Properties resistant to oils Main color black Secondary color silver Type/Kind Article Version sealing rings , fastening packages Variant connection technology