Flat Gasket for Hose Fittings with Flat Seat.

3/8", 14mm OD x 10mm ID x 2mm Thick

1/2", 19mm OD x 11.5mm ID x 2.5mm Thick

3/4", 24.5mm OD x 17mm ID x 2.5mm Thick

1", 30.5mm OD x 20mm ID x 2.5mm Thick

1 1/4", 39.5mm OD x 27.5mm ID x 2.5mm Thick