MOC UV Resistant HDPE Sheets. Warrantee: 36 months from the date of dispatched the material. It can be used in Acid/Alkali/Caustics/Hazardous Chemical flange joints. It can be used up to 85 C Temperature. It can be used for piping inside or outside of plant. Flexible & reusable hence cost effective Easy to fix & remove, Itâ??s having proper Wing Nut & Bolt. Give effective performance. Do not require highly skilled manpower for fixing & removing Unlike metal or other flange guards, these are semi transparent Guard's leakage inside flange joint can be observed / checked. Without removing guard & timely action can be taken. Available in any size depending upon requirement.