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Product Info for VWR Black Rubber Stoppers, Two-Hole 4--M292

These black, high percentage rubber stoppers are low in free sulfur and have two holes to facilitate laboratory procedures. Stoppers sized as 00 through 0 have 3mm diameter holes; the size 1 stopper has 4mm holes. Stoppers sized as 2 and larger have 5mm diameter holes. Stoppers remain resilient and pliable under most laboratory conditions.

Specifications for VWR Black Rubber Stoppers, Two-Hole 4--M292 :

Size:  4
Dia. of Top, mm:  26
Dia. of Bottom, mm:  20
Length, mm:  25
No./lb. (Approx.):  38
Last updated 2026-03-12 UTC.