13mm Round Bottom Vial Stoppers, Bromobutyl Straight Plug, Bag of 1,000

13mm Round Bottom Vial Stoppers, Bromobutyl Rubber, Straight Plug

13mm "round bottom" vial stoppers, straight plug design, are for smaller serum vials with a 7mm diameter hole opening and 13mm outer rim-to-rim diameter. This size is commonly required for 2mL and 3mL vials, as well as larger vials on our website with a specialty 13mm crimp finish opening, such as our 62121iv-10. Medical grade silicone treatment facilitates easier insertion into the vial opening and helps to prevent twinning of two stoppers together.

These stoppers are NOT sterile and have not been pre-washed.

Provided relatively clean in a lot labeled, resealable plastic bag.