RubberMill supplies lab stoppers to North American distributors and large volume customers in the Laboratory, Medical, Scholastic, OEM, Paint - Finishing, Industrial and Recreational Products markets.
Our stock standard grade stoppers are manufactured from a premium grade SBR black rubber compound with a 1.342 specific gravity (they do not float in water). They have a temperature usage range of -40C to 70C. The 40 (+/-5) Durometer material is soft, pliable and long lasting. Solid, one-hole, and two-hole in sizes from #000 to #15 are available. Contact us for pricing on large volumes of custom compounds or colors.

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