PSDB1004NT2R5 is a Viking Gasket and O-ring kit made for pressure switches. It is suitable for Marine/Industrial use, and is comprised of five high performance gaskets and O-rings, designed to withstand high temperatures and pressures up to 2000 psi and up to 200°F. The kit includes a 1/2" red Santoprene gasket, a 1/2" black Neoprene gasket, a 1/4" standard Buna-N o-ring, a 1/2" standard Buna-N o-ring, and a 1-1/4" clamp gasket/spacer. This kit is specifically designed for use with the Viking model PS2 pressure switches.