12Pcs Lab Rubber Stoppers 8X13X17Mm Black Tapered Shaped Solid Small Rubber Stopper For Lab Tube Stopper Size 000# Hole Stopper

Size: Bottom Diameter(small-end): 8mm / 0.31inch; Top Diameter(big-end): 13mm / 0.51inch; Body Height: 17mm / 0.67inch Features: Color: Black; Material: Rubber; Size:#000; Fit for hole: 10-11mm; Package Content: 12 Pcs x Rubber Stopper Test Tube Plugs: Our tapered shape plugs have high elasticity, good insulation and sealing performance, high temperature resistance, acid and alkali resistance, will not dissolve and swell in acidic liquids Solid Rubber Stoppers: Made of good quality rubber, Not easy to deform, moderate hardness, manufactured according to standards; Some dust will be on the rubber stopper surface, could wash by water; Please put them in some place where the children cannot reach Appliaction: Widley used in test tube, pipe, fish tank holes, etc; Note: This rubber material only for the industrial or lab use, do not use them on food or bath tub!Plain