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butyl rubber stopper 28mm
Specification:
Specification
28-B
Tolerance
Diameter of the top part
26.6
±0.3
Thickness of the part
3.8
±0.3
Dimeter of the stem
18.0
±0.2
Total teight
11.8
±0.4
Features:
1> High purity degree;
2> Low punching force;
3> Good tightness and keeping good touch with the puching pin;
4> Good function of acid-resistant & alkali-resistant.
Quality Control:
♥Designed as per GMP standards,the workshops of vulcanization,die cutting,washing and packaging are up to the relative cleanness classes.
♥Quality mangement system established and consummated as per GMP standards.
♥Automatic pre-forming and slice cutting process is adopted.
♥Advanced full automatic vacuum making vulcanization process is adopted.
♥Aubomatic stopper washing production line with powerful vibrating and blowing washing functions.
♥Successful compatibility test for rubber stoppers and medicine.
♥No lefteover,international biological testing standard for biosafety and chemical demand,cleaness and hardness,sealability.
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