NOT MEASUREMENT
SENSITIVE
MIL-PRF-131K
18 August 2005
SUPERSEDING
MIL-PRF-131J
26 August 1998
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 2 - Kraft backing (limited use)
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.
Comments, suggestions, or questions on this document should be addressed to:
Commander, Naval Air Warfare Center Aircraft Division, Code 491000B120-3, Highway
547, Lakehurst, NJ 08733-5100 or emailed to thomas.omara@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.daps.dla.mil.
AMSC N/A
FSC 8135
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