Hurlcon/Praher Spider Gasket 40mm

Spider Gasket 40mm for Hurlcon Sand Filter ECO Series, and RX 20” to 25" tanks with 40mm Praher valve TM12. Suits ECO550, ECO650, RX180, RX280, RX320, and Jetstream with 40mm valves (pre Sept 2007 only). Size: 133mm OD (main ring) / 123mm ID (main ring) / 29mm OD (inside circle) / 18mm ID (inside circle) / 5mm width (main ring) / 7mm height & 6mm height to ridge (main ring) .5 spokes.