Flat Face Screw Couplings/Steel Interchange: exclusive Dnp profile Occlusion: flat face Locking: screw Material: steel Finishing: Zn-Fe (Cr III) and Zn-Ni Threads: BSP-NPT-SAE-METRIC Standard seals: NBR and PU Working temperature: -13°F+212°F Optional seals: FKM, EPDM or more Working pressure: 4,350-5,800 PSI Connection under residual pressure: allowed (both male or female side) Sizes Offered: 1/4” - 2” Accessories offered: Aluminum cap and plug THESE ARE SOLD AS INDIVIDUALS NOT SETS C= COUPLER/FEMALE N= NIPPLE/MALE