MIL-PRF-81904 Coating Compound, Thermal-InsulationThis specification covers asbestos-free, thermal-insulating coating compound. The thermal protection coating is used for the exterior surfaces of aircraft ordnance to delay cook-off during exposure to a liquid fuel fire \(see 6.1\).

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MIL-PRF-81904C(AS)

ASTM D3359

Standard Test Method for Measuring Adhesion by Tape

Test (DoD adopted)

ASTM D4541

Standard Test Method for Pull-Off Strength of Coatings

Using Portable Adhesion Testers (DoD adopted)

ASTM G155

Standard Practice for Operating Xenon Arc Light

Apparatus for Exposure of Non-Metallic Materials

(DoD adopted)

(Copies of these documents are available online at https://www.astm.org or from

ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)

AMERICAN SOCIETY FOR QUALITY (ASQ)

ASQ-Z1.4

Procedures, Sampling and Tables for Inspection by

Attributes (DoD Adopted)

(Copies of this document are available from https://www.asq.org or from the

American Society for Quality, 600 Plankinton Avenue, Milwaukee, WI 53203.)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 834-1

Fire-resistance tests - Elements of building construction

� Part 1: General Requirements (DoD Adopted)

(Copies of this document are available online at https://www.iso.org or from the

International Organization for Standardization (ISO), 1.ch.de la Voie-Creuse, Case

postale 56, CH-1211 Geneva 20, Switzerland.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the

event of a conflict between the text of this document and the references cited herein, the

text of this document takes precedence. Nothing in this document, however, supersedes

applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Qualification. The coatings furnished under this specification shall be

products that are authorized by the qualifying activity for listing on the applicable

qualified products list (QPL) before contract award (see 4.3 and 6.3). Any change in the

formulation of a qualified product shall necessitate its requalification. The material

supplied under contract shall be identical, within manufacturer tolerances, to the

product(s) receiving qualification.

3.2 Composition. The coating compound furnished under this specification shall

consist of a sprayable resin. If the coating is supplied in two components, the volume

mixing ratio shall be specified by the manufacturer.