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Stocked Insulation & Safety Items > Sound Attenuation > Item # BM-1C  
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Item # BM-1C, Barymat BM-1C


Barymat BM-1C is an extremely versatile noise control composite. It consists of (from the top down) a clear, tough, polyester cover for contamination and weather (inc’l. UV) resistance, a loaded, flexible, 1.6 lb. per sq. ft. barrier for transmission loss (.8 lb. also available) and a .25 in. urethane foam decoupler. BARYMAT BM-1C is very effective as an acoustic lagging to reduce breakout noise in pipes and ducts and can be used to increase transmission loss in walls and ceilings.




Applications and Product Data  · Performance Data  · Typical Physical Properties  · Transmission Loss

Applications and Product Data

Uses
  • Pipe / Duct Wrap
  • High TL Walls & Ceilings
  • Lagging for Machinery Housings
BARYMAT BM-1C is easy to apply and is cut with common utility knives. For secure and permanent installations use reinforced duct type tape, mechanical fasteners or specified adhesive - available from Flrwln Corp.

Thickness
Approx. .3125 in. - overall composite thickness.

Standard Dimensions
Sheets: 54" wide X 72", untrimmed (27 sq. ft.)
Rolls: 54" wide X 30", untrimmed (135 sq. ft.)
CUSTOM TRIMMING AND DIE CUTTING CAN BE PROVIDED


Performance Data
Performance data is an extract from NRC - Ottawa report on tests according to ASTM E 90-90 with material adhered to 16 ga. steel.



NOTICE: Stated performance data is based on recognized testing methods. Product performance can be affected by field conditions and installation methods. Users of these products are responsible for determining suitability for their application and compliance with any legal provisions including those relating to health and safety.


Typical Physical Properties

Flammability
MVSS 302 - Passes

Barrier Colour
Black

Foam Color
Charcoal Grey

Foam Density
ASTM D 3574-86 — 1.8 - 2.2 lb. / cu. ft.

Composite Weight
1.7 lb. / sq. ft. (BM-1A - 0.9 lb. / sq. ft.- also available)


Transmission Loss
Frequency (Hz) Transmission Loss (dB) BM - 1C
80 23
100 23
125 23
160 23
200 23
250 23
315 22
400 26
500 30
630 33
800 38
1000 42
1250 45
1600 47
2000 47
2500 47
3150 51
4000 53
5000 55
6300 56
STC 34




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