Injectable Butyl Septum for PP28 Thread

The injectable butyl septum for PP28 thread is designed for use with the aluminium caps with central hole available in our catalogue, allowing liquid extraction or injection using a hypodermic needle without opening the bottle and enabling more convenient, faster and controlled dispensing.

Manufactured from high-elasticity grey butyl, it provides self-sealing properties after puncture and helps maintain the hermetic seal during use. Its composition makes it suitable for air-sensitive samples, volatile solvents and applications requiring controlled access to the contents.

Its geometry is optimised to fit precisely into the closure housing, ensuring stable integration between the metal cap and the pierceable elastomeric element.