Insulrap JB is a self-adhesive multi-layer white PET/FOIL/PET zero perm membrane designed specifically for LNG and Cryogenic insulation systems. The product is constructed of a proprietary Polyguard butyl compound, which is a peel and stick self-sealing with excellent low temperature adhesion and flexibility, it can be installed down to 0ºF.
Insulrap JB is designed specifically for Cryogenic insulation systems as an integral primary vapor barrier. A "Perfect Barrier" having a perm rating of 0.0000 perms; puncture resistance of 70 PSI, and elongation of 70%. Standard available roll dimensions are 35" x 75' and 4" x 50'; 23" x 75' by special order.
Insulrap JB has been tested for cold cyclical application on LNG type installations and is an integral component in Polyguard's Ultimate Corrosion Proof, Vapor Proof Insulation System.
RG-2400 is applied first to the pipe to prevent corrosion.
ZEROPERM® Vapor Barrier is used around the 2nd insulation layer, prior to applying Insulrap™ JB Butyl Vapor Barrier, which is applied around the 3rd insulation layer, prior to the metal jacket.
VaporGuard™ Tape is a self-adhesive butyl sealant for use in vapor stops, expansion joints, and terminations on ammonia systems.
ZEROPERM® Tapes Two types of tapes are available to complete field installations, both use a high quality, acrylic adhesive with excellent cold weather performance. ZEROPERM® A Tape has a kraft release liner and is typically used for sealing longitudinal and circumferential laps. ZEROPERM® Self-Wound Tape has no liner, and is used on valves and fittings.
Features & Benefits
- can be installed down to 0ºF
- peel and stick
- Butyl Compound
- Designed for LNG and Cryogenic insulation systems
- puncture resistant to 70 PSI
- Elongation of 70%
- Cold cyclical application on LNG installations