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Red Rubber Turnover Stopper size 57mm with Plug Diameter of 25.5mm.
Turnover stoppers create a very effective double seal for narrow aperture containers. External serration creates an excellent internal seal with the flexible turnover sleeve creating a secure seal on the container's outer neck. The head is easily pierced with a hypodermic needle. All stoppers are tapered and the cellulose material will depress slightly to ensure a tight fit into the tube or neck. Turnover stoppers are manufactured from an extremely high grade of silicone rubber and are available from stock in two main colours (red or cream) This form of silicone has a higher tear strength with less vulnerability to splitting or mechanical damage. Supplied in packs as indicated.
- External serrations on plug
- Turnover sleeve folds down over the containers outer neck and creates a secure seal
- Easily perforated with hypodermic needles
- Available in red or cream
- Various pack sizes