Centrifugal Fibreglass Wool Pipe Centrifugal Fiber glass Wool is performs strong and rigid. Each section is split at one side and hinged at the other side for easy installation. Service Temperature from -85 º C to 454º C. Standard Dimensions of Pipe from 23 mm through 326 mm, Standard Length 914mm (3'), Standard Thickness from 1/2" through 4", No asbestos content.Relevant SpecificationASTM C 547 Type I, ASTM C 795, ASTM C 1136, ASTM C 585ApplicationCentrifugal Fibreglass Wool pipe consist of lightweight cylindrical insulating sections. These sections are one-piece units with a slit along one wall length which opens for quick application and closes tight once in place. They provide excellent thermal insulation and are designed for use on pipes operating from -85º C to 454º C. Centrifugal Fibreglass Wool pipe is available bare for hot piping with a factory applied calico scrim jacket as a base for cement or paint finish and with aluminum foil jackets for use on cold piping where a vapor barrier is required. The longitudinal lap of the jacket has a self-sealing adhesive strip. Fiberglass pipe insulation offers the widest range of uses the most cost effective choice of insulating mechanical systems.Fiberglass pipe insulation is jacketed with self sealing all service (ASJ) vapor retarder jacket.Moisture resistance assures stable high R-value of 4.35 per inchFiberglass pipe insulations are molded of heavy density resin bonded inorganic glass fibersInsulation for hot, cold, concealed and exposed piping operating at temperatures from 0° F (-18° C to 850° F 454° C) in commercial buildings, industrial facilities and process or power plantsSSL II Positive Closure SystemJacket and lap shipped adheredFiberglass pipe insulation has excellent thermal performanceMeets Model Code fire ratings3ft,3.3ft and 4ft lengthpipes all available.