Gray butyl for freeze-drying Diam.20
 
Butyl rubber crimp stopper, with 2 legs, for freeze-drying.
Guarantees a tight seal.
 
Composition: bromobutyl with silicate filler and inorganic coloring system.
Hardened in an unconventional way, without MBT.
 
Uses: infusion, injection, freeze-drying.
 
Quality certificate issued by Helvoet Pharma: has passed all tests for rubber stopper compatibility, medicine (international biological test standard for biosafety), hardness and tightness.

The product is only in contact with polytetrafluoroethylene (PTFE) which has excellent resistance to thermal or chemical attack.