Turnover Flange Septa Manufacturer,Supplier and Exporter
Product Code : SEL-LG-11459
Quick Answer: Turnover flange septa close a bottle or container neck with a double seal and offer re-sealing capability for moisture- or air-sensitive applications; sizes are 12, 15, 18 and 25 mm.
Last updated: October 2026
Key Features
For moisture- or air-sensitive applications
Re-sealing capability
Annular serrations on the hollow plug press against the inside wall of the bottle neck, each acting as a suction sealing point
Turnover flange moulded to grip the outside of the container neck
Flange and serrations together promote a double seal
Sizes: 12 mm, 15 mm, 18 mm and 25 mm
Technical Specifications
Specification
Value
Plug
Hollow, with annular serrations
Flange
Turnover, grips outside of container neck
Seal
Double seal (flange plus serrations)
Sizes
12, 15, 18 and 25 mm
About This Product
Some reagents and samples must be kept away from moisture or air, and a turnover flange septum is one way to close their container. Inside the neck, annular serrations on the hollow plug press against the wall so that each one becomes a suction sealing point. The flange then turns over to grip the outside of the neck, giving a double seal with re-sealing capability.
Frequently Asked Questions
How does a turnover flange septum seal a bottle?
Annular serrations on the hollow plug press against the inside wall of the neck, each acting as a suction sealing point, while the turnover flange grips the outside of the neck to promote a double seal.
