(R) Cloths, Cleaning For Aircraft Primary and Secondary Structural Surfaces
|Publication Date:||1 July 2020|
This specification covers woven, nonwoven, and knit absorbent materials supplied either as dry cloths or presaturated cloths for solvent cleaning process applications.
These cloths have typically been used in cleaning metallic or nonmetallic aircraft surfaces preparatory to processing operations which are sensitive to residual surface contamination, but usage is not limited to such applications.
NOTE: The technical requirements listed in Section 3 may be insufficient to determine the compatibility between cloths and transparencies.
Cloths covered by this specification are classified as follows:
Class 1 Woven cloth, composed of 100% cotton fibers, with or without added binders.
Class 2 Nonwoven cloth, composed of 100% synthetic or blended synthetic, cotton, or cellulose materials, with or without added binders.
Class 3 Empty classification (formerly presaturated cloths - see Form 2).
Class 4 Knit cloth composed of 100% polyester yarn.
Grade A For use in cleaning operations where exceptionally low residual surface contamination levels are required (as defined by Table 1 limits).
Grade B For use in cleaning operations where low residual surface contamination levels are required (as defined by Table 1 limits).
Form 1 Dry cloths (in individual wipes or rolls).
Form 2 Form 1 cloths contained in a presaturated wiping system, except that binders, surfactants, or other chemical treatments shall not be included. Solvents used in the presaturation process shall be designated and approved as acceptable by the purchaser.
NOTE: Supplier must ensure the solvent, cloth, and packaging used in presaturated wiping system are compatible for the duration of shelf life.
NOTE: Form 2 cloths are typically available in the following configurations:
• Perforated rolls of non-woven cloth wipers dispensed from a canister designed to minimize solvent evaporation.
• Folded woven, non-woven, or knit cloth wipers dispensed from a flexible pouch designed to reseal and minimize solvent evaporation.
If no classification of cloth is specified, a Grade A, Form 1 cloth of either Class 1 or Class 2 shall be the default.
Safety - Hazardous Materials
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.