Silent-Seal® NA

Low Pressure Mine Ventilation Air Sealant
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Silent-Seal NA conforms to or exceeds ASTM E162 at a flame spread index of less than 25. Silent-Seal NA has also been deemed MSHA suitable as an underground mine ventilation sealant, suitability number MSHA-S10/00, minimum applied thickness 1 inch. Colored bright yellow for increased visibility.

Density

1.75 lb/ft3 (28 kg/m3)

Tack-Free Time 10–25 seconds
Cuttable 2–5 minutes
Fully Cured Time 1 hour
Cell Structure >90% CLOSED cell content
Fire Rating

ASTM E162 (NA & MVS ONLY)

Flame Spread: <25

Smoke Developed:

Approvals

MSHA-S110/0

Shelf Life

12 months

Item Number
Description
Size
Dispensing Type
Yield
P10737

Silent-Seal NA

II-180
Disposable
180 bdft (16.7 m2)

  • Sealants
    • Other
      • Underground mining ventilation sealant

Use our Yield Calculator to determine how much low pressure polyurethane foam you need to complete your next project.

*Yields are based on theoretical calculations, for comparison purposes, and will vary depending on ambient conditions and particular application. Other two-component foam product yields are shown on the specific Technical Data Sheet. These examples are representative of other products of similar size.