MIL-PRF-131L-2025 性能规范阻隔材料，防潮，防油，柔韧，可热封

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MIL-PRF-131L

w/AMENDMENT 1

24 September 2025

SUPERSEDING

MIL-PRF-131L

10 April 2022

PERFORMANCE SPECIFICATION

BARRIER MATERIALS, WATERVAPORPROOF, GREASEPROOF,

FLEXIBLE, HEAT-SEALABLE

This specification is approved for use by all Departments and Agencies of the Department

of Defense.

1. SCOPE

1.1 Scope. This specification covers the requirements for heat-sealable, greaseproof,

flexible barrier materials having low water vapor transmission characteristics for use in military

packaging.

1.2 Classification. Barrier materials are furnished in the following classes.

Class 1 - Plastic backing (non-woven)

Class 3 - Scrim backing (woven fabric)

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this

specification. This section does not include documents cited in other sections of this

specification or recommended for additional information or as examples. While every effort has

been made to ensure the completeness of this list, document users are cautioned that they must

meet all specified requirements of documents cited in sections 3 and 4 of this specification,

whether or not they are listed.

AMSC N/A FSC 8135

NOT MEASUREMENT

SENSITIVE

Comments, suggestions, or questions on this document should be addressed to

Commanding Officer, Naval Air Warfare Center Aircraft Division Lakehurst, System

Standardization and PHS&T Branch, Code BL32600, Mail Stop 120-3, Route 547, Joint

Base MDL, NJ 08733-5100 or emailed to NAVAIR-Standardization@us.navy.mil.

Since contact information can change, you may want to verify the currency of this

address information using the ASSIST online database at https://assist.dla.mil.

MIL-PRF-131L

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2.2 Government documents.

2.2.1 Specifications and standards. The following standard forms a part of this document

to the extent specified herein. Unless otherwise specified, the issues of this document are those

cited in the solicitation or contract.

DEPARTMENT OF DEFENSE STANDARD

MIL-STD-3010 - Test Procedures for Packaging Materials and

Containers. (Copies of this document are available online at https://quicksearch.dla.mil.)

2.3 Non-Government publications. The following documents form a part of this

document to the extent specified herein. Unless otherwise specified, the issues of these

documents are those cited in the solicitation or contract.

AMERICAN SOCIETY FOR QUALITY (ASQ)

ASQ/ANSI Z1.4 - Sampling Procedures and Tables for Inspection

By Attributes.

(Copies of this document are available online at www.asq.org.)

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL

ASTM D471 - Rubber Property-Effect of Liquids, Standard Test Method

for.

ASTM D882 - Tensile Properties of Thin Plastic Sheeting, Standard Test

Method for.

ASTM F1249 - Water Vapor Transmission Rate Through Plastic Film and

Sheeting Using a Modulated Infrared Sensor, Standard

Test Method for.

(Copies of these documents are available from www.astm.org.)

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.

MIL-PRF-131L

w/AMENDMENT 1

3. REQUIREMENTS

3.1 Qualification. The barrier materials furnished under this specification shall be products

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

before contract award (see 4.2 and 6.4).

3.2 Material. Barrier materials shall be made from such materials and by such processes as

to ensure compliance with the performance requirements of this specification.

3.3 Construction. Barrier materials shall be constructed of one or more plies in any manner

which ensures compliance with the performance requirements of this specification. Butting of

component materials or the finished product shall not be permitted except in the direction

perpendicular to the rolling direction. When a butt weld is made on the finished product or any

ply thereof, the areas shall be externally flagged with colored markers to prevent use of that

portion of the roll.

3.3.1 Splices. A roll shall not contain more than 3 splices (4 pieces) and each piece shall be

not less than 45 yards in length. Splices within rolls shall be even the entire width of the roll

material and shall not come apart during unwinding of the roll. Rolls containing splices shall be

flagged at both ends of each splice with colored markers to indicate splices within the roll.

Barrier material in flat cut sheets shall not contain splices (see 4.3.2.2).

3.4 Form. The barrier material shall be furnished in rolls or flat cut sheets as specified in

the contract or order (see 6.2).

3.4.1 Rolls. Unless otherwise specified (see 6.2), the width of roll material shall be 36

inches, with a tolerance of plus ¼ inch or minus 1⁄8 inch. The average length of roll material

shall be not less than 200 yards. The length of any individual roll shall be not less than 195

yards. The roll material shall be uniformly wound on nonreturnable cores. The core’s inside

diameter shall be not less than 3 inches, with a tolerance of plus 1⁄8 inch. The length of the core

shall be equal to the width of the roll material, with a tolerance of plus 1⁄8 inch. The core shall be

rigid to prevent distortion of the roll during use and shipment conditions (see 4.3.2.3). Each roll

shall be restrained to prevent unwinding (see 4.3.2.2).

3.4.2 Sheets. When flat cut sheets are specified, the length and width shall be as specified

by the procuring activity (see 6.2). If the length and width tolerances for cut sheets are not

specified the tolerance for each shall be plus ¼ inch or minus 1⁄8 inch (see 4.3.2.3). Flat cut

sheets shall be uniformly stacked (see 4.3.2.2).

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标签： #材料

摘要：

MIL-PRF-131L-2025 是美国国防部发布的最新性能规范，专门针对柔韧性、可热封的防潮及防油阻隔材料，广泛应用于军事装备、电子元器件及敏感物资的长期封装保护。该规范取代旧版标准，明确了材料在湿热、油雾及机械应力环境下的物理性能、热封强度与阻隔效率的测试要求，确保包装在极端条件下仍能有效防止水汽和油脂渗透。对于军工供应链、防务包装及高可靠性工业领域而言，掌握该规范是合规采购与质量管控的关键，有助于提升产品在仓储与运输环节中的耐久性与安全性。

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