Pigment-free, filler-free sleeve stopper septa 

These sleeve stopper septa are manufactured from pure natural rubber without fillers or pigments for super tactility and resealability. Less additives in the rubber lowers the potential for contamination during use.

Storage Note for Natural Rubber Septa: Store septa in a closed bag out of sunlight to retard blooming, which is the formation of a whitish film on the surface of the rubber. Blooming is a natural process and does not affect performance. Remove visible bloom by washing or wiping off before use.