(R) Cloths, Cleaning for Aircraft Primary and Secondary Structural Surfaces
|Publication Date:||1 January 2001|
This specification covers both woven and nonwoven absorbent materials supplied as either dry cloths or as presaturated cloths for solvent cleaning process applications.
These cloths have been used typically in cleaning smooth or textured, metallic and nonmetallic surfaces preparatory to processing operations which are sensitive to residual surface contamination, but usage is not limited to such applications. Cloths qualified to this specification are not intended for use on transparencies.
Cloths covered by this specification are classified as follows:
Class 1 Virgin cloth, composed of 100% cotton fibers, with or without added binders.
Class 2 Virgin cloth, composed of 100% synthetic or blended synthetic, cotton, or cellulose materials, with or without added binders, which remain stable up to 400 °F (204 °C).
Class 3 Class 1 or Class 2 cloth wipes contained in a pre-saturated wiping system, except that binders, surfactants or other chemical treatments shall not be included (See 8.6). Solvent used in the pre-saturation process shall either be qualified to AMS 3166 or shall be approved as acceptable by the purchaser.
Grade A For use in cleaning operations where exceptionally low residual surface contamination levels are required.
Grade B For use in cleaning operations where low residual surface contamination levels are required.
1.3.1 Grade A cloths may be substituted for Grade B at any time for processing operations.
1.3.2 Unless purchaser specifies a specific cloth, either Class 1 or Class 2 may be supplied.