RST8-H-VWR - Rubber Stoppers 1 Hole United Scientific Supplies - Size 8 - Each

Solid, black stoppers contain a high percentage of pure rubber and weigh less than neoprene. Resilient and pliable for a long time Low in free sulfur Can withstand adverse laboratory conditions without hardeningThese 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. Stoppers will withstand temperatures from -25 to 70 â"ƒC (-13 to 158 °F). Each stopper has its size marked in raised figures.