TT-C-520B, FEDERAL SPECIFICATION: COATING COMPOUND, BITUMINOUS, SOLVENT TYPE, UNDERBODY (FOR MOTOR VEHICLES)(02-FEB-1973) [S/S BY MIL-C-62218]. This specification covers an asphalt compound suitable for use as a protective coating and sound deadener on the underbody parts of automotive equipment.For more information about this specification please click here: TT-C-520B
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