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5640-01-123-0811
Sound Controlling Block
5640011230811 011230811
Cancelled Without Replacement effective 24 Sep 2002
A light, rigid item composed of one or more kinds of granule and/or fiber with binder added, compressed to the desired density, and dried. It may be with or without surface coating and/or perforations or voids to be exposed to the noise area to entrap and dissipate sound energy, and is rated for this use. It is provided in lengths up to and including 36 inches (914.4 mm). View more Sound Controlling Block
November 2023
3
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Restrictions 5640-01-123-0811
5640-01-123-0811 is a Sound Controlling Block This item is considered a low risk when released from the control of the Department of Defense. The item may still be subject to the requirements of the Export Administration Regulations (EAR) and the Code of Federal Regulations (CFR). This item may be hazardous as it is in a Federal Supply Class for potentially hazardous items. A MSDS should be available from the supplier for the end user to evaluate any hazards. This item does not contain a precious metal.