Why hvac technicians use tapes sealants.
Rolled mastic sealant.
The foil grip 1402 has a ul classification and meets nfpa 90 a and 90 b.
Nashua foil mastic sealant tape seals and seams low medium and high pressure sheet metal duct systems and ul listed flexible non metallic ducts.
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It provides an instant water resistant grip to most surfaces including sheet metal duct board flex duct pvc coated duct and duct wrap vapor barriers.
Aggressive butyl rubber adhesive provides a permanent air and water tight seal.
Heat and cold cycles used over throughout the year will cause any material to expand and contract.
The foil grip 1403 181 bfx is listed by ul underwriters laboratory having a ul 181 b fx.
Thicknesses of both products are 17 mils with widths of.
Over time the connections seams and splits can warp separate or.
Hvac ducting is no different.
45 roll of tape mastic.
Ul 181b listed 25 to 295 f check price.
Hardcast rolled mastic duct sealant foils.
3 32 x 3 4 tape mastic is used for multiple sheet end lapping on roofs with slopes of 2 12 or less.
These rolled mastic sealants are code approved and can be used in lieu of or in combination with hardcast liquid sealant line.
Foil grip 1402 is suitable for sub grade application on pvc coated duct and is.