ASTM International is a global nonprofit standards setting organization for numerous construction products. Mechanical insulation for piping, ductwork, and equipment is no exception. Standard specifications have been established by ASTM…
Learn MoreProto PVC Fitting Sizes for AEROFLEX EPDM™ Pipe Insulation
December 1, 2025
WARNING: AEROFLEX EPDM pipe OD's are larger than fiberglass; recommended PVC fitting sizes in chart may be larger than for the same fiberglass pipe size. Outside diameters calculated using maximum…
Learn MoreWARNING: Fitting size #30 - only 45º and short-radius 90º elbows available - no tees or valves. AEROFLEX EPDM™ pipe OD's are larger than fiberglass; recommended PVC fitting sizes in…
Learn MoreTechnical Performance Comparison AEROFLEX EPDM™ v NBR/PVC Closed-Cell Elastomeric Insulation
November 1, 2025
The intent of this technical bulletin is to illustrate, without bias, the technical performance characteristics of EPDM and NBR/PVC closed-cell elastomeric insulation for building mechanical systems: piping, ducts, and equipment.…
Learn MoreAsbestos, Formaldehyde, Lead, Mercury & Mercury Compounds
October 1, 2025
The purpose of this technical bulletin is to confirm that AEROFLEX EPDM™ closed-cell elastomeric insulation and accessories are free of the following chemical substances: Asbestos Formaldehyde Lead Mercury Mercury Compounds
Learn MoreIntermittent Operating Temperatures to 300ºF (150ºC)
September 2, 2025
EPDM rubber compound is formulated in specific grades for numerous commercial and industrial uses. Each grade offers trade-offs when it comes to HVAC/R and Plumbing applications - differing performance characteristic…
Learn MoreClosed-cell elastomeric (rubber) is often compared to closed-cell polyethylene pipe insulation. In some cases, they are deemed equivalent since they are both closed cell and flexible. Let's look at what…
Learn MoreRigid calcium silicate (calsil) and phenolic pipe supports are commonly specified and installed as a component of insulated mechanical piping systems at hanger, strut, and pipe rack locations. Pipe supports…
Learn MoreThe Buy American Act (BAA) and Build America, Buy America (BABA) Act are often misunderstood and for good reason. While there are similarities with their requirements, both federal regulations are…
Learn MoreMost duct liner specifications require that duct liner be mechanically fastened (pinned) to the sheet metal duct with weld pins. Pinning, which is in addition to the application of wet-applied…
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