Stopper, with 2 hole, 5 mm dia, Size of 3, solid bottom, Colour: Blue, recommended by ASTM std, neoprene rubber, use petroleum products, inorganic acids, oil resistance, suitable for temp up to 250 deg F/120 deg C, Size: 18mm, Top 24mm, Length 25mm
Stopper, solid bottom, Size of 7, Colour: Blue, ASTM std, from long lasting neoprene rubber, use with petroleum products, minerals, oils, inorganic acids and bases, oil resistance, suitable for temp up to 250 deg F/120 deg C, Size: 30mm, Top 37mm, Length 25mm