Part Number: 10894883-4 (O-ring) Part Number: 10894883-5 (O-ring) Part Number: 10894889 (Hardware) Part Number: 10894889-1 (Pressure switch) Part Number: 10-89489 (Housing) Part Number: 10894896 (Hardware) Part Number: 10894897 (Hardware) Part Number: 10894898 (Adapter) Part Number: 108949 (Tube assembly,) Part Number: 10894900 (Flange segment) Part Number: 1089490000 (Weidmuller) Part Number: 10894901 (Flange segment) Part Number: 10894902 (Flange segment) Part Number: 1089-4905 (Component)