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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Items
Lab Stoppers

#4 Size 1-Hole Lab Stopper
Lab Stoppers

#4 Size 2-Hole Lab Stopper
Lab Stoppers

#4 Size Solid Lab Stopper
Brands N/A Rubbermill
Style N/A 1-Hole N/A 2-Hole N/A Solid
Stopper Size N/A #4
Minimum Order N/A 300
Top Diameter N/A 26 mm
Bottom Diameter N/A 20 mm
Length N/A 25 mm
Hole Diameter N/A 5 mm N/A 5 mm N/A
Amount Available for Immediate Shipment N/A {0} N/A {0} N/A {0}
Specific Gravity N/A 1.342