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United Scientific RST6-H2 RUBBER STOPPERS, 2-HOLE, #6 1LB/EA
RUBBER STOPPERS, 2-HOLE, #6. These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25mm tall. Sold as one-pound bags.