High-quality spider gasket made by Aussie Gold.
Suits Poolrite MKII multiport valves.
Fits V600,S5000,S6000 filters.
This is a unique gasket for Poolrite and will not fit anything else. Only has a thickness of 2.5mm. 
5 -way Spoke Valve Seat High-Quality Gasket.
MKII Thin Gasket 22199
Approx Outside Dia 140mm (5.5")
20mm Internal Dia.
Thickness 2.5mm