This dielectric union repair kit consists of two replacement gaskets that can be used for the 3/4 in 3001 and 3005 series, or 1/2 in 3003, 3004, 3006, 3007 and 3008 series.
WATTS® Dielectric Union Gasket Kit, Series: RK-3000, 1/2 x 3/4 in Nominal, Domestic