WE HAVE THE BEST PRICE ONLINE FOR A LOT THIS SIZE!


This listing is for a 1,000 piece lot (in one zip locked bag as pictured) of new West Brand Rubber 20mm Straight Plug Stopper, Gray.     These stoppers have only a circle in the middle as shown in the photo.

If you want a better deal on a larger, sealed box lot of this stopper, then see our other listing here:  https://www.ebay.com/itm/256255035253 


Formula:   S-63 890 BP GRY


This design provides maximum sealing for vials with a blow-back glass finish, which is a small ridge on the interior of the vial’s neck. The snap-on stopper locks into the blow-back ridge, providing a tight seal and keeping the stopper from backing out. This style is not recommended for vials with a straight-walled finish. The blow-back feature is typically found in vials from North American manufacturers.


Buy with confidence, check our feedback.      For small quantities we will ship Priority US Mail.   For larger quantities we will ship UPS ground.