Part # BGM 7-4B, Barymat BGM 7-4B On Firwin Corp.

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	Part # BGM 7-4B, Barymat BGM 7-4B

Barymat BGM 7-4B consists of a limp, dense, mineral filled plastic barrier which was designed to provide maximum transmission loss for its weight. This layer is laminated to a one inch, semi-rigid fiberglass board which increases performance and provides thermal insulation. An abrasion resistant, clear polyester film protects the barrier layer from dirt, moisture and oily contaminants.

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

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.

Applications and Product Data

Uses		Engine Compartment Liner Thermal Acoustic Decoupler BARYMAT BGM 7-4B is easy to apply and can be cut with common utility knives. For secure and permanent installations use mechanical fasteners or specified adhesives - available from Firwin Corp.

Thickness		Approx. 1.25 in. - overall composite thickness

Standard Dimensions		Sheets: 48"wide X 72", untrimmed (24 sq.ft.) CUSTOM TRIMMING AND DIE CUTTING CAN BE PROVIDED

Typical Physical Properties

Thermal Conductivity of Foam at 75°F (24°C)		ASTM C 518 - 0.24 Btu. in. / hr. ft.² ºF , 0.034 W/mºC

Barrier Colour		Black

Composite Weight		26 oz. per sq. ft.

Fiberglass Color		Yellow

Polyester Film Color		Clear

Transmission Loss

Frequency (Hz)	Transmission Loss (dB) BGM 7-4B
80	22
100	20
125	15
160	15
200	22
250	29
315	33
400	37
500	41
630	43
800	46
1000	48
1250	51
1600	52
2000	49
2500	48
3150	53
4000	56
5000	58
6300	59
STC	36

Part # BGM 7-4B, Barymat BGM 7-4B

Uses

Thickness

Standard Dimensions

Thermal Conductivity of Foam at 75°F (24°C)

Barrier Colour

Composite Weight

Fiberglass Color

Polyester Film Color