Cap

Designed for high-integrity sterile packaging of injectable pharmaceuticals, our injection vial caps/stoppers deliver unmatched performance in safety, sealing reliability, chemical inertness, and regulatory compliance. The stopper core is manufactured from medical-grade butyl or halobutyl rubber—highly inert, non-leaching, and free from heavy metals or plasticizers—ensuring zero drug contamination. Fully compliant with USP Class VI, EP 3.1, ISO 10993, and GMP requirements, the product demonstrates excellent biocompatibility with no cytotoxicity or sensitization risk.

Featuring a dual-seal design (elastomeric stopper + protective overseal), it provides exceptional barrier protection against moisture and oxygen ingress, significantly extending drug shelf life. The stopper maintains seal integrity under extreme conditions—from -20°C deep freeze to 121°C autoclave sterilization—and withstands lyophilization cycles without deformation or leakage. Rigorous dimensional tolerances ensure perfect fit with standard 1 mL to 50 mL glass vials, while the optimized puncture geometry minimizes coring and particle shedding during needle insertion.

The aluminum or plastic overseal offers crush resistance, microbial protection, and optional features like easy-peel rings, color coding (e.g., blue, gray), and clear batch/expiry printing for traceability. Fully compatible with high-speed automated filling lines, the system supports both liquid and lyophilized injectables. Lightweight and durable, it reduces logistics costs and waste, with recyclable components aligning with sustainable packaging initiatives. Ideal for IV, IM, and SC drug delivery formats across biologics, vaccines, and small-molecule therapeutics.