Rubber Stopper, #13, Black Solid
Chemglass Rubber Stopper, #13, Black Solid; Solid Rubber Stopper, #13, Black The dimensions are in accordance with specifications established by the N.B.S. and are low in free sulfur (1/2%). Pack of 3 - CHMGLS
Chemglass Rubber Stopper, #13, Black Solid; Solid Rubber Stopper, #13, Black The dimensions are in accordance with specifications established by the N.B.S. and are low in free sulfur (1/2%). Pack of 3 - CHMGLS
