High Quality 1 Hole Rubber Stoppers for Laboratory Use

1 Hole Black Rubber Stoppers. Made of dense, soft natural rubber with low sulfur content. Creates a tight seal for test tubes, flasks and other laboratory glassware.

Remains pliable over a great period of time
Perfect for use with non-aggressive or concentrated solutions
Withstand temperatures from –25 to 70°C (–13 to 158°F)
Each stopper has the size number in raised letters on the top
Resilient

Resilient

Stopper Size	Top Diameter	Bottom Diameter
0	17mm	13mm
00	15mm	10mm
1	19mm	14mm
2	20mm	16mm
3	24mm	18mm
4	26mm	20mm
5	27mm	23mm
5.5	28mm	24mm
6	32mm	26mm
6.5	34mm	27mm
7	37mm	30mm
8	41mm	33mm
9	45mm	37mm
10	50mm	42mm
10.5	53mm	46mm
11	56mm	48mm
11.5	60mm	52mm
12	64mm	54mm
13	68mm	58mm
13.5	75mm	62mm
14	90mm	75mm
15	103mm	83mm

Beer Brewing & Testing

Agriculture and Horticulture - Production & Testing

Environmental & Waste Water Testing

General Laboratory Supplies

Stoppers & Corks