304 Stainless Steel BSP HEX LOCKNUT 1/2 Inch BSP Threaded Jam Nut with Groove for O-Ring BSP Lock Nut fits Fusti/Anvil and Other Fermenter/Boiler Spigots - Hobby Homebrew
O-rings and back-up rings | SKF
E.S. Electronic Service GmbH | Können O-Ringe in nicht kreisförmigen Nutprofilen verwendet werden?