Closed Cell Elastomeric Foam Pipe Insulation
This information reflects our best understanding of product composition in 2016.
Flexible elastomeric foam (FEF) pipe insulation intended for use insulating both interior hot and cold water lines is typically made from an rubber/polymer blend of nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC). Insulation products...
Flexible elastomeric foam (FEF) pipe insulation intended for use insulating both interior hot and cold water lines is typically made from an rubber/polymer blend of nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC). Insulation products of this type are described by ASTM C534 as Type I (pre-formed tubes), Grade I (standard temperature range -297° to 220° F). To install the insulation, the tubes are slit on site and fit around pipes before being sealed with a contact adhesive. Some products are available pre-slit and with a pre-applied adhesive strip to make sealing the tubes easier. Whether the adhesive is applied on site, or pre-applied, contact adhesive also needs to be applied to the butt ends of the tubes to seal the connection points where one tube meets another. This CP describes a Type 1, Grade 1 FEF insulation requiring installers to slice on-site and reseal with contact adhesive. The contact adhesive itself is not covered in this review.