Pennyhead Hollow Stopper

Pennyhead hollow stopper designed for secure sealing and controlled flow in filtration flasks and lab setups. Precision-made for a tight fit and reliable performance in extraction, vacuum, and process applications. Durable construction ensures long-lasting service in demanding environments.

Hollow stopper with closed bottom
available in 14/20 or 24/40 or 34/45

Made in USA

Please Note: Glassware DOES NOT have warranties. Glassware may have minute blemishes that will not affect the function. If you believe there are imperfections on your glassware, please contact us. We check all our inventory once we receive them and make sure no defective glassware is sent to our customers.