MIL-PRF-23653D
4.4.8 Permanent compressibility (class 1 only). The percent decrease in volume of a tile caused by 22 hours at
1000 lb/in² gage water pressure shall be found. The volume of the tile in cubic centimeters shall be measured at
80±9 °F (27±5 °C) by weighing the tile in air and in water with a balance sensitive to 0.1 gram. This measurement
shall be repeated within 1 hour after exposing the tile to the hydraulic pressure at ambient room temperature. The
percent decrease in volume shall be calculated as follows:
V1 - V2
× 100
Percent decrease in volume =
V1
Where:
V1 = W1 W2
V2 = W3 W4
W1 = weight of tile in air before pressure treatment
W2 = weight of tile in water before pressure treatment
W3 = weight of tile in air after pressure treatment
W4 = weight of tile in water after pressure treatment
This test shall be performed on three whole tiles. The average of the results shall be recorded.
4.4.9 Toxicity. The plastic vibration damping tiles shall be evaluated by the Navy-Marine Corps Public Health
Center (NMCPHC). Sufficient data to access the health hazards associated with the handling, application, use,
removal and disposal of the vibration damping tiles shall be provided by the manufacturer/distributor to the
4.4.10 Off-gassing. The plastic vibration damping tiles shall be tested in accordance with the Submarine
Atmospheric Control Manual, NAVSEA S9510-AB-ATM-010, by a Government-approved testing facility and
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. This material is intended to be installed in accordance with the procedures of MIL-STD-2148
for use as a vibration damping material for steel plates in free-layer, restrained-layer and constrained-layer
configurations. The choice of tile class and weight depends respectively on the temperature and thickness of the
steel plating to be damped. For toxicity reasons this material should not be used at temperatures over 200.0 °F
(93.3 °C).
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