This is the rubber bushing part that creates a tight seal between the fuel tank outlet hole and fuel shut off valve.
Fuel Tank Valve Seal Grommet Bushing, For Kohler Engine 25 313 01-S, 2531301-S
Fuel Tank Valve Seal Grommet Bushing For Toro 104047, 46-6560, E513645, 1-513645
1 x Fuel Tank Grommet Seal 2 hole. To suit 22/ 24 mm tank hole.
Fuel Tank Grommet Seal 2 hole For 20mm Tank Hole. 25mm Outer. Strimmer
Fuel Tank Grommet Seal 3 hole 17.5mm Strimmer, Hedge Trimmer, chainsaw etc
Fuel Tank Grommet Seal 2 hole 20mm Strimmer, Hedge Trimmer, chainsaw etc