WIKA HEAD KN4-A AL 1/2NPT 3/4NPT MODEL: KN4-A PROTECTION CLASS (DEPENDING ON USED CABLE GLAND) UP TO IP68 MATERIAL: CAST ALUMINUM INSTRUMENT CONNECTION: 1/2 NPT CONDUIT 1: 3/4 NPT SEALING MATERIAL: EPDM TEMP RANGE: -50 - +140 degC SURFACE/COATING: POLYESTER OR EPOXY COATED T75A5-BA210 (INSIDE & OUTSIDE COATED, ALL THREADS ARE UNPAINTED) COLOR: BLUE RAL5022 (WIKA) CAP-VERSION: SOLID CAP, REMOVABLE WITH SS CHAIN CABLE GLAND: WITHOUT SPACE FOR INSTALLATION: �45X25mm SPECIAL REQUIREMENTS: SCREW & RIVET MADE OF STAINLESS STEEL FREE OF OIL AND GREASE