Laboratory Grade Rubber Stoppers offered in a wide range of common sizes for most laboratory applications. Available in green neoprene rubber that is resistant to chemicals and ozone deterioration or standard black SBR rubber. Solid rubber stoppers are molded according to standard industry size specification. Packaged in approximately one pound packages.Shipping Weight: 2.2 lbsShipping Dimensions: 5.50 x 8.50 x 1.00Research or further manufacturing use only, not for food or drug use.
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