1. Overview

Butyl rubber stoppers have good internal cleanliness, chemical stability, air tightness, and biological properties. However, due to the complex formula and the concentration gradient of the added raw materials, after being encapsulated with some drugs with relatively strong molecular activity, they are absorbed, adsorbed, leached and penetrated by the drugs, resulting in the compatibility problem between the rubber stopper and the drug. The most prominent ones are some cephalosporins, some large infusions, and many traditional Chinese medicine injection preparations. Therefore, by choosing an inert soft coating to cover the surface of the rubber stopper to isolate the direct contact between the medicine and the rubber stopper, the compatibility with the medicine can be significantly improved.

2. Product introduction

• Product name: Butyl rubber stopper;
• Product material: Butyl rubber;
• Product color: conventionally blue-gray butyl rubber, other colors can be customized (with MOQ requirements);
• Process characteristics: bromobutyl rubber, chlorinated butyl rubber, Teflon coated butyl, PET coated butyl, zero silicone oil process, no-clean sterilization, no-clean sterilization;
• Product application: bottle mouth sealing of various glass and plastic containers used to hold various preparation bottles, cosmetics, oral liquid health products, etc;
• Material characteristics: ① extremely low gas permeability; ② extremely strong water vapor permeability; ③ high chemical resistance; ④ high heat aging resistance; ⑤ has high internal cleanliness; ⑥ Good ozone and weather resistance; ⑦ Stable radiation disinfection; ⑧ It should be non-toxic, odorless and non-polluting; ⑨ It should have good elasticity;

3. Size of rubber stopper

Specifications and dimensions of some commonly used butyl rubber                                      Unit: millimeter (mm)