• Available with Straight Sided Plugs, 11mm, 13mm, and 20mm
  • Available with Blow back finish, 20mm and 30mm
  • Serum Stoppers in Red Natural Rubber, Gray Butyl, and Silicone
  • Custom Compounds available upon request in EPDM, Nitrile, Neoprene, and Viton®
  • Plugs are designed to fit Vials and Bottles with Standard Biological Finish as outlined by the Glass Packaging Institute
  • Aluminum Seals are available upon request


Plasticoid Serum Stopper Chart

Aluminum Seal Size Flange Diameter Plug Diameter Flange Thickness
11mm .400″ .246″ .062″
13mm .495″ .301″ .078″
20mm .750″ .518″ .135″
30mm blow back 1.090″ .610″ / .650″ .155″