美国原装进口Avantor VWR橡胶塞/耐腐蚀胶塞VWR Rubber Sleeve Stoppers

These stoppers allow insertion of a syringe needle and exhibit excellent resealing properties for air sensitive chemistry.

Natural rubber

Hollow plug to fit inside bottles, flasks, vials or tubing

Sleeves to pull over neck of bottle to form a double seal

89097-554     VWR橡胶塞，White白色，底部直径13 mm，顶部直径20 mm，100只/盒，Stoppers for 14/20 joint size

89097-558     VWR橡胶塞，White白色，底部直径24 mm，顶部直径30 mm，100只/盒，Stoppers for 24/40 joint size

89097-544     VWR橡胶塞，Red红色，底部直径24 mm，顶部直径30 mm，100只/盒，Stoppers for 24/40 joint size

89097-542     VWR橡胶塞，Red红色，底部直径15 mm，顶部直径30 mm，100只/盒，Stoppers for 19/22 joint size