Harnessflex straight adaptor bodies are unique in that they feature both an anti vibration locking ring on the cap nut, to ensure the fitting remains tightened during assembly and in service, and an integral neoprene €0€ ring imbedded in the mounting face, to seal the fitting against the junction box or enclosure. Easy to put together by hand, the fitting achieves an IP67 sealing rating when all supplied components are used and correctly assembled.