20mm Round Bottom Bromobutyl Vial Stoppers, Autoclavable, Pack of 100

20mm "autoclave resistant" bromobutyl rubber serum vial stoppers.

Customer (YOU) must wash and sterilize as required by industry standards depending upon the customer's end use.

The center of the stopper (where a hypodermic needle would pass through) is thicker than stoppers designed for powder applications. These stoppers resist rupturing during the autoclave process if crimped into a vial before sterilization.

This style of stopper is best suited for non-blowback vials, but can work adequately for many customers who do have blowback vials. If you would prefer having stoppers that are more suitable for blowback vials, see our SNAP ON 20mm VIAL STOPPERS

Packaged in a lot labeled resealable packs of 100 pieces