Upgrade your lab experience with our durable 9mm blue screw cap, designed for a secure seal and exceptional chemical resistance. Featuring a high-quality PTFE liner and silicone septa, this cap ensures maximum sample protection and minimizes contamination. Perfectly suited for vials, this 9mm screw cap provides reliability and performance, even in demanding laboratory environments. Choose a cap that’s engineered to meet the highest standards of quality and precision—ideal for research, analysis, and storage needs. 100 pieces / bag