Stopper, with 1 hole, 5 mm dia, Size of 2, 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: 16mm, Top 20mm, Length 25mm
Stopper, with 2 hole, 5 mm dia, Size of 9, 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: 37mm, Top 45mm, Length 25mm
Stopper, with 1 hole, 5 mm dia, Size of 5, 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: 23mm, Top 27mm, Length 25mm
Stopper, with 1 hole, 5 mm dia, Size of 5.5, 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: 24mm, Top 28mm, Length 25mm
Stopper, solid bottom, Size of 7.5, 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: 31mm, Top 39mm, Length 25mm
Stopper, solid bottom, Colour: Blue, recommended by 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: 13mm, Top 17mm, Length 25mm
Stopper, with 1 hole, 5 mm dia, Size of 9, 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: 37mm, Top 45mm, Length 25mm