Penny Head Stopper

Precision-manufactured scientific glass stopper designed to create a secure, reliable seal with ground glass flasks, vessels, and adapters. Engineered from high-quality borosilicate glass, this solid penny head stopper resists thermal stress and chemical exposure, making it ideal for routine laboratory sealing, storage, and reaction setups.

Perfect for chemists, researchers, and lab technicians, this glass penny head stopper offers smooth ground joint compatibility and a classic flat top design that makes handling and removal simple and efficient. Manufactured in Vineland, New Jersey, each stopper is individually inspected to meet high standards of quality and consistency, ensuring dependable performance in analytical, educational, and industrial laboratory environments.

Key Features & Benefits:

High-Quality Borosilicate Glass: Durable, chemical-resistant material for long-lasting use in standard lab applications.

Tight Ground Joint Seal: Provides excellent sealing with common laboratory glassware to prevent leaks.

Versatile Sizes Available: Multiple joint sizes support a wide range of flasks and apparatus.

Proudly Made in USA: Crafted with quality control inspection for precision and reliability.

Whether you’re setting up reactions, securing samples, or organizing glassware storage, this Penny Head Stopper combines rugged performance with laboratory-ready precision. Add this essential glass stopper to your scientific toolkit to support smoother workflows and dependable seals every time.

Joint sizes other than those listed are available, please call for pricing.

Manufactured with pride in Vineland, New Jersey, USA

All Glassware is individually inspected against manufacturing drawings, and Certificates of Conformity are available upon request to meet QA/QC documentation requirements.