Slides over pipe and conforms to any roof pitch. Use silicone sealant between base and surface, and secure with sheet screws. Multi-size pipe sealing range. Molds to metal, plastic, etc. Non-fading EDPM collar. Rated 212 degrees Fahrenheitcontinuous heat. Resists weathering due to ozone and ultraviolet light. Approved for Type B installations. Not for hot-mopped or built-up roofs. Do not use paint or petroleum based products on collar.