Rubber Stoppers

RubberMill produces rubber stoppers for the lab, commercial, medical, food and beverage, and industrial markets. Our standard grade stoppers are manufactured from a premium grade SBR black rubber compound. The 40 ± 5 durometer material is soft, pliable and long lasting. Solid, one-hole and two-hole stoppers are stocked for immediate shipment.

Please select from the following options and click for more information on our standard lab stopper sizes.

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Lab Stopper Material Specifications

Solid Stoppers
One Hole Stoppers
Two Hole Stoppers

Rubber Stoppers

 

 

 

Lab Stopper Material Specifications

 

Dimensions (mm) Dimensions (in)
Part# Size Top(A) Bottom (B) Length (C) Top(A) Bottom (B) Length (C) Pcs./Lb.
CLS-000-S-10B40 000 12 9 18 0.472 0.354 0.709 180
CLS-00-S-10B40 00 15 10 25 0.591 0.394 0.984 105
CLS-0-S-10B40 0 17 13 25 0.669 0.512 0.984 77
CLS-01-S-10B40 1 19 14 25 0.748 0.551 0.984 57
CLS-02-S-10B40 2 20 16 25 0.787 0.630 0.984 52
CLS-03-S-10B40 3 24 18 25 0.945 0.709 0.984 39
CLS-04-S-10B40 4 26 20 25 1.024 0.787 0.984 33
CLS-05-S-10B40 5 27 23 25 1.063 0.906 0.984 28
CLS-05.5-S-10B40 5 1/2 28 24 25 1.102 0.945 0.984 26
CLS-06-S-10B40 6 32 26 25 1.260 1.024 0.984 20
CLS-06.5-S-10B40 6 1/2 34 27 25 1.339 1.063 0.984 18
CLS-07-S-10B40 7 37 30 25 1.457 1.181 0.984 15
CLS-07.5-S-10B40 7 1/2 39 31 25 1.535 1.220 0.984 14
CLS-08-S-10B40 8 41 33 25 1.614 1.299 0.984 12
CLS-08.5-S-10B40 8 1/2 43 36 25 1.693 1.417 0.984 11
CLS-09-S-10B40 9 45 37 25 1.772 1.457 0.984 10
CLS-09.5-S-10B40 9 1/2 46 38 25 1.811 1.496 0.984 9
CLS-10-S-10B40 10 50 42 25 1.969 1.654 0.984 6
CLS-10.5-S-10B40 10 1/2 53 45 25 2.087 1.772 0.984 7
CLS-11-S-10B40 11 56 48 25 2.205 1.890 0.984 6
CLS-11.5-S-10B40 11 1/2 63 50 25 2.480 1.969 0.984 5
CLS-12-S-10B40 12 64 54 25 2.520 2.126 0.984 5
CLS-13-S-10B40 13 68 58 25 2.677 2.283 0.984 4
CLS-13.5-S-10B40 13 1/2 75 62 35 2.953 2.441 1.378 3
CLS-14-S-10B40 14 90 75 39 3.543 2.953 1.535 1.6
CLS-15-S-10B40 15 103 83 39 4.055 3.268 1.535 1.3

In addition to our standard stocked items, we manufacture custom stoppers in all durometers and compounds. Visit our Technical Data Section to learn more about different rubber compounds, durometer, and chemical resistance properties.

Tapered rubber stoppers are the most common configuration, but we can provide any shape plug, bung, or stopper you need for labware, bottles, boiler tubes, flasks, jars, test tubes or similar containers. Contact us to discuss your unique stopper needs.