Redesign of the FX19060 Valve Seat, ID bore 5.5mm.
O-ring groove is centered to provide more structural support to the seat, to prevent damage and breakage.
This seat is used in the following FX Airgun models:
FX Dreamline (until serial number 0101759), FX Wildcat MK1, FX Wildcat MK2, FX Streamline, and FX Royale 400/500.
Comes with 6mm x 1mm NBR90 o-ring installed and spare o-ring.