• High - Performance Double O - Ring: With two high - quality EPDM O - rings, Duotight fittings offer twice the sealing surface, significantly reducing leakage risk and ensuring reliable performance. Ideal for anyone seeking a trustworthy push - in fitting.
• No Clamps Needed: Simply insert and firmly push the tubing to attach. Easily release by pushing in the collet. It's a hassle - free way to connect your EVABarrier tubing.
• Versatile Applications: Suitable for both gas and beverage applications, and pressure rated to 100 psi. This Duotight fitting is a must - have for various setups.
This Duotight fitting is designed to go through the wall of a tank, housing, or wall, similar to a pass through shank. You can run EVABarrier tubing from one side to the other. It's compatible with EVABarrier 8 mm OD tubing (D1717 / D1718). With the lock nuts in place, there's approximately 1' of pass through threading. The double O - ring system allows tubing to be bent at a tighter radius without leakage. EPDM offers excellent chemical resistance, better gas transmission rates, wear resistance, and is BPA - free. We recommend cutting tubing straight for a complete seal.





The Duotight 8mm (5/16 in.) Female Bulkhead Push - In Fitting is perfect for aquarium enthusiasts, homebrewers, and anyone who needs to connect tubing through a wall. You can use it to run EVABarrier tubing between different compartments of a tank or housing. It fits 8 mm OD EVABarrier tubing and has about 1' of pass through threading with lock nuts in place. The fitting can handle a pressure of up to 100 psi and is suitable for both gas and beverage applications.