22-400 Black Phenolic Continuous Thread Cap - Rubber/Teflon Lined

Teflon Lined Cap for Chemical and Laboratory Use

The 22-400 Black Continuous Thread Closure with PTFE (Teflon) liner is designed for superior chemical resistance and product purity. Engineered for demanding laboratory and industrial environments, this closure protects sensitive contents from moisture, contamination, and chemical reaction. The PTFE (Teflon) facing provides an inert, non-reactive barrier that maintains sample integrity, while the rubber backing ensures secure compression and leak prevention. Paired with a 22-400 neck finish, this cap ensures a precise, reliable seal for analytical, chemical, and high-purity packaging.

• Rubber/PTFE liner offers excellent sealing strength and chemical compatibility
• Ideal for high-purity and corrosive contents such as reagents, solvents, and pharmaceuticals
• Black continuous thread phenolic closure ensures secure sealing performance
• Perfect for laboratory, research, and industrial liquid handling applications
• Made in USA for consistent quality and performance