Available in Natural red rubber, gray butyl and Teflon® coated butyl 7, 13 and 20 mm sizes Stoppers come in a variety of elastomer formulations. Natural rubber is a general-purpose elastomer used primarily for aqueous liquid fill products in the 4.0-7.5 pH range. Its resealability is…

Autoclavable Chemical resistant Gas impermeable Acceptable sterilization methods: autoclave, dry heat, chemical.

Cleanest, most precise pharmaceutical grade rubber stoppers for research and parenteral drug applications Readily punctured with syringe needle 1229H85-K77, 1223Z64-65, 1780K28-31: straight plug style 1229K78, 1780K33-35: 2 leg lypohilization style 1780J10-J14: sleeve style