Reliable combination. Plungers & Combiseals.
Plungers are a core mechanism of cartridge delivery systems. These elastomer components are frequently used as closure solutions and must perform a wide variety of functions. They are in permanent contact with the liquid pharmaceuticals and must not cause any impurities or chemical reactions.
Our plungers are made of specialized butyl-based formulations with all the physical, chemical, and mechanical properties essential for the safe and easy administration of the drug product. The rubber components also offer an optimized extractable and leachable profile to secure the integrity and safety of the customers' drug – even the long-term contact between drug and seal is not a problem, and Plunger Barrel Seal Integrity (PBSI) is guaranteed. For highly sensitive drugs, we also offer our customers components coated with our proprietary fluoropolymer spray coating technology. Both barrier properties and the elimination of the closure as a source of silicone oil-based particles can be ensured.
With our combiseals, we complete our unique sealing solution for cartridge applications. Our plungers combined with rubber-lined aluminum combiseals enable us to ensure the system integrity of the cartridge. In addition, our components are multifunctional: after multiple piercings with pen needles, our combiseals still protect the contents of the cartridge. Furthermore, our products offer our customers a superior usability with combiseals that feature a dual compound elastomeric liner inside the aluminum cap.