KISICO’s TPE stopper is a pioneering solution that is the future of freeze-drying stoppers. An alternative to traditional rubber stoppers, TPE is latex-free and requires no additives, crosslinking agents or reaction promoters, all of which could have a negative impact on the product they come into contact with.

Our advanced injection molding technology ensures cost efficiency and the highest quality standards. Production in a cleanroom facility ensures maximum product purity and eliminates the need for post-production washing processes. Camera-assisted inline quality control verifies compliance with product specifications for each individual stopper. 

Only medically-approved raw materials that have been tested for biocompatibility are used to manufacture stoppers. They comply with USP Class VI. These materials have excellent sterilization properties for gamma irradiation and autoclaving or ethylene-oxide sterilization. Materials and colorants can be customized to meet customer needs. All TPE stoppers are recyclable and more sustainable than stoppers made from other materials due to reduced production waste.