I've been searching for suitable o'rings to fit my fasttech kayfun nano glass tank clone because of an ill fitting chimney oring , then i found this place online , just thought i'd share it so you guys can easily find odd sized spares for odd grooves etc. 
O-Rings - Viton | Nitrile | EPDM | PTFE | Silicone | HNBR | Kalrez
i bought the Silicone BS008SR70 4.47mm Iinside Diameter 1.78mm Cross Section ones so it works out at 8.03mm Outside Diameter with a good 0.2mm+ compression on the seal faces should fit my slightly undersize clone chimney diameter nicely, they also have other oring materials too.
Hope i haven't repeated something you guys already know but i searched the forum to no avail.
cheers charlie b
O-Rings - Viton | Nitrile | EPDM | PTFE | Silicone | HNBR | Kalrez
i bought the Silicone BS008SR70 4.47mm Iinside Diameter 1.78mm Cross Section ones so it works out at 8.03mm Outside Diameter with a good 0.2mm+ compression on the seal faces should fit my slightly undersize clone chimney diameter nicely, they also have other oring materials too.
Hope i haven't repeated something you guys already know but i searched the forum to no avail.
cheers charlie b
