18-400 Black Phenolic Continuous Thread Cap - Tri-Foil Lined

Tri-Foil Lined Cap for Moisture and Vapor Barrier Protection

The 18-400 Phenolic Black Tri-Foil Lined Continuous Thread Closure is designed to provide exceptional barrier protection for sensitive and high-value contents. Manufactured from durable phenolic resin, this closure offers superior resistance to heat, chemicals, and physical impact — ensuring long-term stability in laboratory and industrial environments. The Tri-Foil liner utilizes a multi-layer laminate structure engineered to reduce oxygen and moisture transfer, preserving product purity and extending shelf life. With an 18-400 neck finish, this precision-engineered cap delivers a tight, reliable seal for analytical, chemical, and pharmaceutical packaging applications.

• Phenolic construction provides strong chemical and heat resistance
• Tri-Foil liner offers superior moisture and vapor barrier protection
• Continuous thread ribbed design ensures consistent, secure sealing
• Ideal for laboratory, reagent, and specialty chemical storage
• Made in USA for consistent quality and performance