Rubber Stoppers

The limited range of stoppers listed below are intended for the various types of glassware we sell; mainly test tubes and Erlenmeyer flasks.

25mm=~ 1 inch. Please note that the sizes ending in "i" come from a non-US source, so the numbers don't match. We show the US equivalents in the table below. If you are concerned about the fit, please let us know.

Not recommended for use with food or beverages.

P/N	US Equiv.	Height (mm)	Diameter (mm)		P/N	US Equiv.	Height (mm)	Diameter (mm)
P/N	US Equiv.	Height (mm)	Top	Bottom	P/N	US Equiv.	Height (mm)	Top	Bottom
33720-00	#00	15.9	12.1	9.5	33721	#1	20.2	18.3	14.3
33710-6i	#3	25.5	23.4	18.1	33724	#4	30.0	28.6	21.1

Prices, including quantity discounts & freight are one click away; press the shopping cart icon on the line of the product of interest; pay by credit card with 100% security and privacy.

P/N	Description	Unit
33720-00	Rubber stopper, #00, H:15.9xT:12.1xB:9.5mm (fits 13mm tubes)	Each	0.10
		Bag/100	7.00
		Pack/1000	60.00
33721	Rubber stopper, #1, H:20.2xT:18.3xB:14.3mm (18mm tubes)	Each	0.15
		Bag/100	8.40
		Pack/1000	72.00
33710-6i	Rubber stopper, H:30.7xT:23.4xB:18.1mm (50ml EF)	Each	0.32
		Bag/100	22.40
		Pack/1000	192.00
33724	Rubber stopper, #4, H:31xT:29xB:21mm (25mm tubes; 125ml EF)	Each	0.35
		Bag/100	24.50
		Pack/1000	210.00

Stoppers Science Supplies Home rare earth magnets, molecular models, credit card magnifiers, school science supplies

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Distribution & Mail 169 Lexington Court, Unit I Waterloo, ON, N2J 4R9	Distribution Only Niagara Falls, NY 14305 See: Returns Policy
Phone: (519) 746-4761 Fax: (519) 747-5636 Or ORDER toll-free at: 1 (877) 746-4764
Waterloo Region Customers: order on-line & then call to arrange pickup; we do not have a walk-in store; we will deduct the freight.