Rigid Plastic Joiner 6mm ID x 8mm OD (5/16) x 50mm Long

Made from rigid polypropylene with an outer diameter of 8 mm (5/16") and an inner diameter of 6 mm, this tube is used to assemble duotight fittings when a straight connection is needed.

Although it is possible to make connections using short pieces of Evabarrier 5 mm Beer Line with an outer diameter of 8 mm, this one is much more flexible, and when mounting parts on a gas panel or wall, it will often make things look much neater.

The length of 50 mm is sufficiently long, so even after inserting two duotight fittings of 8 mm (5/16") on both ends, you should still have an exposed length of approximately 3 mm, allowing you to easily disassemble the fittings later if needed.