20-400 Black Phenolic Continuous Thread Cap - Tri-Foil Lined

Tri-Foil Lined Cap for Moisture and Vapor Barrier Protection

The 20-400 Phenolic Black Tri-Foil Lined Continuous Thread Closure is engineered to deliver enhanced moisture and vapor protection for sensitive product contents. Constructed from durable phenolic resin, this closure provides excellent resistance to chemicals, heat, and physical impact — ensuring long-term performance in demanding laboratory and industrial environments. The Tri-Foil liner features a multi-layer barrier that helps block oxygen and moisture ingress, maintaining product purity, shelf life, and stability. Designed with a 20-400 neck finish, this closure ensures a tight, reliable seal suitable for chemical, pharmaceutical, and analytical packaging needs.

• Phenolic shell offers superior chemical and heat resistance
• Tri-Foil liner delivers outstanding moisture and vapor barrier protection
• Continuous thread ribbed closure ensures secure, consistent sealing
• Ideal for lab, pharma, and industrial packaging requiring product integrity
• Made in the USA for reliable quality and performance