MIL-STD-186 Protective Finishing For Army Missile Weapon SystemsThis standard establishes the minimum requirements for procedures, materials, and systems for cleaning, plating, painting and finishing metals, wood, electronic materials, parts and assemblies for rockets, guided missiles, and components to protect them from deterioration.

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MIL-STD-186F (MI)

TABLE II. Surface treatments - Continued.

Code No.

Treatment

234

235

Water-Repellant Preservative (WRP) Treatment. Apply one liberal coat of WRP solution to the wood surfaces. The solution shall contain copper naphthenate, boiled linseed oil or exterior- grade varnish, paraffin, and solvent. Where practical, apply the solution by immersion for not less than 3 minutes. Otherwise, brushing or low pressure spraying is acceptable. Allow the treated wood to air dry or kiln dry before it is painted.

Phosphoric acid anodize (SAE ARP 1524) (preferred treatment for critical aluminum adhesively bonded joints).