Sealing Devices: Type - Pushbutton Boot; Size-Mounting - 15/32 in Bushing; Size - Dimensions - 0.422" I.D. x 0.547" H x 0.625" W; Material - Silicone Rubber; Color - Gray; Additional Information - Listings : NEMA 1, 2, 3, 3S, 3R, 4, 4X, 6P, 12, 13, IEC : IP66/IP68