Sanitary Tri Clamp Ferrule Cover 1/2" to 1 " 51/64 Thread / Weld/Hose Ferrule Blined Cap Silicone Sealing Strip
https://www.vogueparade.com/shopping/EN/200282142/1/4000901362519/sanitary-tri-clamp-ferrule-cover-12-to-1-5164-thread-weldhose-ferrule-blined-cap-silicone-sealing-strip//