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INCH-POUND
MIL-PRF-8116D
23 September 2014
SUPERSEDING
MIL-PRF-8116C
31 October 1997
PERFORMANCE SPECIFICATION
PUTTY, GENERAL PURPOSE, NON-HARDENING
This specification is approved for use by all Departments and Agencies of the Department
of Defense.
1. SCOPE
1.1 Scope. This specification covers a general purpose putty compound with corrosion
inhibitors.
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 or 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 or 4 of this specification,
whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and
handbooks 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.
Comments, suggestions, or questions on this document should be addressed to:
AFLCMC/WNZEB, Robins AFB GA 31098. 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
AMSC N/A FSC 8030
Distribution Statement A. Approved for public release; distribution is unlimited.
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MIL-PRF-8116D
FEDERAL STANDARDS
FED-STD-141 Paint, Varnish, Lacquer and Related Materials, Methods
of Inspection, Sampling and Testing
FED-STD-313 Material Safety Data, Transportation Data and Disposal
Data for Hazardous Materials Furnished to Government
Activities
(Copies of these documents are available online at http://quicksearch.dla.mil/ or
https://assist.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue,
Building 4D, Philadelphia, PA 19111-5094.)
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 TESTING AND MATERIALS (ASTM)
ASTM B209 Standard Specification for Aluminum and
Aluminum-Alloy Sheet and Plate
ASTM D2369 Standard Test Method for Volatile Content of Coatings
ASTM D381 Standard Test Method for Existent Gum in Fuels by
Jet Evaporation
ASTM D471 Rubber Property-Effects of Liquids
(Copies of ASTM standards may be obtained from ASTM International, 100 Barr Harbor Drive,
P.O. Box C700, West Conshohocken, PA 19428-2959. Electronic copies of ASTM standards
may be obtained from http://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 (except for related
specification sheets), 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 First Article. When specified (see 6.2), a sample shall be subjected to first article inspection
in accordance with 4.2.
3.2 Recycled, recovered, environmentally preferable, or biobased materials. Recycled, recovered,
environmentally preferable, or biobased materials should be used to the maximum extent
possible, provided that the material meets or exceeds the operational and maintenance
requirements, and promotes economically advantageous life cycle costs.
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MIL-PRF-8116D
3.3 Material. The material shall be a non-corrosive, non-drying, non-hygroscopic, adhesive
putty-like compound of permanently elastic composition containing corrosion inhibitors, and
free from any ingredients which might cause shrinkage by oxidation or evaporation.
3.4 Performance requirements.
3.4.1 Appearance. The compound shall be of uniform composition possessing the same physical
properties throughout. No lumps or separated material shall be present when inspected as
specified in 4.5.
3.4.2 Non volatile content. The non volatile content shall be no less than 97 percent when tested
as specified in 4.7.1.
3.4.3 Consistency. The consistency of the material shall be such as to produce a diameter of
spread of not less than 2-1/8 inches nor more than 2-3/8 inches when under a load of 10 pounds
for 6 to 7 minutes when tested as specified in 4.7.2.
3.4.4 Shear test. The time required for a lineal shear of the compound between metal strips shall
be not less than 4 minutes using a 1000 gram load when tested as specified in 4.7.3.
3.4.5 Resistance to drying and aging. The compound shall not flow, lose adhesion or become
embrittled when dried for seven days at a temperature of 180±5°F. The loss in weight after seven
days shall not exceed 3 percent by weight when tested as specified in 4.7.4.
3.4.6 Removability. A film of the compound subjected to the resistance to drying and aging test
(see 4.7.4) shall be removable after not more than 24 hours of immersion in ethyl acetate or other
materials as recommended by the manufacturer which are acceptable to the procuring activity
when tested as specified in 4.7.5.
3.4.7 Water solubility. The compound shall not be affected by water and shall contain no more
than 3 percent water soluble material when tested as specified in 4.7.6.
3.4.8 Fuel contamination. The non-volatile extractable materials contributed by the compound in
contact with the fuel, shall not exceed 60 milligrams per 100 milliliters. No more than a slight
discoloration shall result on a freshly polished copper strip hung in the contaminated fuel during
the 48 hour extraction period when tested as specified in 4.7.7.
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3.4.9 Resistance to salt water and hydrocarbons. A finished panel partially immersed in a two
layer liquid consisting of a 3 percent solution of sodium chloride in water and 30 percent
aromatic hydrocarbon test fluid for not less than seven days at a temperature maintained at 95 to
100 °F, shall not show film failure or evidence of corrosion on the metal when tested as specified
in 4.7.8
3.4.10 Storage stability. The manufacturer shall furnish the procuring agency with certification
that the putty furnished has a minimum shelf life of three years, at which time the putty shall be
capable of passing the minimum requirements of this specification.
3.5 Environmental conditions.
3.5.1 Hazardous materials. The primer shall not contain chlorinated solvents or hydrolyzable
chlorine derivatives. Also, the primer shall not contain or require for application any EPA Class I
Ozone Depleting Substances/Chemicals or hazardous materials as defined in FED-STD-313. Nor
shall the primer contain any chemical listed in the current report of known carcinogens of
National Toxicology Program (see 4.8.1).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
a. First Article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First Article Inspection. First Article inspection shall consist of all the inspections and tests
as specified in paragraphs 4.5 and 4.7.1 through 4.7.8.
4.2.1 First Article procedures. Upon successful completion of all testing requirements as
specified herein, the contractor shall provide a certified test report showing that the material
conforms to all requirements of this document. The report shall be forwarded to
AFLCMC/WNZEB, Robins AFB GA 31098. Upon review and acceptance of the test report, the
government will provide approval to the contractor as a qualified source.
4.3 Conformance inspection. Conformance inspection, when specified (see 6.2), shall consist of
all the inspections and test as specified in paragraphs 4.5 and 4.7.1 through 4.7.8.
4.3.1 Lot size and sampling. For purposes of sampling for conformance inspection, a lot shall
consist of putty from one batch offered for delivery at one time. Samples of putty from each lot
shall be selected as specified in FED-STD-141, Method 1022.
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4.4 Requirements cross-reference matrix. Table 1 provides a cross-reference matrix of the
Section 3 requirements tested or verified in the paragraphs below.
TABLE 1. Requirements Cross-Reference Matrix
REQUIREMENT VERIFICATION
3.4.1 4.5
3.4.2 4.7.1
3.4.3 4.7.2
3.4.4 4.7.3
3.4.5 4.7.4
3.4.6 4.7.5
3.4.7 4.7.6
3.4.8 4.7.7
3.4.9 4.7.8
4.5 Visual examination for defects. Each of the putty samples shall be inspected visually to
verify compliance with this specification. Any sample containing one or more defects as defined
in Table 2 shall be cause for rejection of the lot represented by that sample.
TABLE 2. Visual Examination for Defects
Critical None defined
Major
101 Composition not uniform
102 Putty contains lumps
103 Putty has separated material
Minor None defined
4.6 Test panels. The test panels specified in Table 3 shall be required for tests. The 1 by 4 and 3
by 6 inch panels of alclad aluminum alloy shall have a 1/8 inch diameter hole centered on a line
¼ inch from one end of the panel and a line shall be inscribed across the width of the panels
exactly one inch from the same end (holed end). The panels shall be cleaned in accordance with
FEDSTD-141, Method 2013, paragraph 4.3, (for panels not to be anodized).
TABLE 3. Required Test Panels
Quantity Material Approximate Nominal
Size Thickness
1 Aluminum Alloy, 2024-T3, ASTM B209 3 x 6 in. 0.020 in.
6 Alclad Aluminum Alloy, 2024-T3, ASTM B209 1 x 4 in. 0.012 in.
4 Alclad Aluminum Alloy, 2024-T3, ASTM B209 3 x 6 in. 0.020 in.
2 Alclad Aluminum Alloy, 2024-T3, ASTM B209 2-1/2 x 3 in. 0.020 in.
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4.6.1 Application of coating. Coatings shall be applied to test panels with a suitable spreader to
permit depositing a uniform film of approximately 1/32 inch in thickness on the panels. All
aluminum panels shall be coated entirely on one side except for a one inch strip across the top of
the panel. A fairly uniform film of compound shall first be spread from the inscribed line to the
opposite end of the panel, allowing a slight excess which will be squeezed out by the spreader.
4.7 Test procedures.
4.7.1 Non-volatile content. The non-volatile content shall be determined in accordance with
ASTM D2369 (see 3.4.2).
4.7.2 Consistency. Three 25 gram samples of compound, weighed to the nearest 0.1 gram, shall
be rolled into balls with the hands. The consistency shall be determined at room temperature by
placing one of the sample balls between two glass plates and applying a load of 10 pounds for 6
to 7 minutes. The load shall be applied evenly and vertically by means of a suitable fixture, such
as the Williams Plastometer, having freely moving parallel plates. The greatest diameter of the
spread of the compound shall be measured and the average of the three samples shall be
reported. This diameter shall be measured from the wetted area (see 3.4.3).
4.7.3 Shear test. Three pairs of 1 by 4 by 0.012 inch 2024 Alclad aluminum panels shall be
coated in accordance with 4.6.1 so as to deposit a uniform film. Each pair of panels shall be
placed with the coated areas together and with uncoated areas at opposite ends. The panels shall
be pressed together under a load of 10 pounds for 5 to 6 minutes, using a suitable fixture, such as
the Williams Plastometer, to apply the load evenly and vertically. The excess compound shall be
removed from all edges. The panels shall be suspended at the upper end and a 1000 gram load
applied to the lower end. The number of seconds that the panels suspend the weight shall be
recorded and the average of three trials shall be reported (see 3.4.4).
4.7.4 Resistance to drying and aging. Two weighed 3 by 6 inch 2024 Alclad aluminum panels
shall be coated to the scribed line (see 4.6) and reweighed to obtain the weight of applied
compound. The panels shall be supported in an upright position with the uncoated end downward
and shall be heated for 7 days in an oven at a temperature of 180±5°F. After cooling, the panels
shall be reweighed and the average loss in weight calculated. The panels shall show no flow over
the inscribed line and no loss of adhesion or embrittlement (see 3.4.5).
4.7.5 Removability. A coated panel which has been subjected to the resistance to drying and
aging tests shall be immersed for 24 hours in ethyl acetate or other cleaning material
recommended by the manufacturer for removal of the aged coating. The panel shall then be
examined for completeness of removal. The compound shall either be completely dissolved or
loosened from the metal to leave a clean surface. There shall be no corrosion apparent on the
metal (see 3.4.6).
4.7.6 Water solubility. Two weighed 3 by 6 inch 2024 Alclad aluminum panels shall be coated
with compound and reweighed after drying to constant weight at a temperature of 150±5°F . The
panels shall then be suspended in distilled water at a temperature of 150±5°F for two hours and
again dried to constant weight at 150±5°F. From the loss in weight calculate the average percent
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MIL-PRF-8116D
of water soluble material (see 3.4.7).
4.7.7 Fuel contamination. Each of two 2-1/2 by 3 inch 2024 Alclad aluminum panels shall be
coated on a 2 by 2-1/2 inch area. The panels shall be given a lengthwise bend and shall be placed
in an upright position on the 2-1/2 inch edge in a wide mouthed pint jar having a screw cap.
Hang a bright copper strip in the jar and cover the panels and strip with 250 milliliters of 30
percent aromatic hydrocarbon test fluid conforming to ASTM D471, Type III. A sample of the
test fluid shall be taken at the same time for a blank determination. Cover the jar and allow to
stand for 48 hours at room temperature. Two 50 milliliter samples of the contaminated fuel shall
be decanted off and the non-volatile gum residue determined in accordance with ASTM D381.
The nonvolatile material shall be placed in an appropriate bath maintained constantly at a
temperature of 570 ± 10 °F for 30 minutes. After cooling in a closed container, the beakers shall
be weighed and the stoved gum residue calculated for 100 milliliters of the contaminated fuel
Necessary
corrections shall be made for preformed gums already present in the test fuel from the blank
determination. The copper strip should show no more than a slight discoloration (see 3.4.8).
4.7.8 Resistance to salt water and hydrocarbon. A 3 by 6 inch 2024 aluminum alloy panel shall
be coated on one side using the spreader. Apply a similar coat to the other side with a spatula and
coat the exposed edges. After two hours exposure to the air, the panel shall be immersed
vertically for not less than 7 days in a covered glass vessel containing a two layer liquid,
consisting of a 3 percent aqueous sodium chloride solution and the aromatic hydrocarbon test
fluid (ASTM D471, Type III) so that 2 inches of the panel are exposed to the salt mixture, 2
inches of the panel exposed to the aromatic test fluid and the balance of the panel exposed to the
air-vapor mixture. The temperature during the test shall be maintained at 95 to 100 °F.
Immediately upon removal from the liquid, the compound on the panel shall be examined for
softening, blistering, leaching and loss of adhesion. There shall be no corrosion apparent on the
metal (see 3.4.9).
4.8 Environmental conditions tests.
4.8.1 Hazardous materials verification. The MSDS shall certify that the primer contains no EPA
Class I Ozone Depleting Substances, hazardous materials IAW FED-STD-313, or any known
carcinogens (see 3.5.1).
5. PACKAGING
5.1 Packaging requirements. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When packaging of materiel is to be performed by
DoD or in-house contractor personnel, these personnel need to contact the responsible packaging
activity to ascertain packaging requirements. Packaging requirements are maintained by the
Inventory Control Point’s packaging activities within the Military Service or Defense Agency, or
within the military service’s system commands. Packaging data retrieval is available from the
managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
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6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is
not mandatory.)
6.1 Intended use. The compound covered by this specification is intended for use as a general
purpose sealer for cracks, small voids, pinholes, and seams where a corrosion inhibiting type
material is required. This material is not for use as a fuel tank or pressure cabin sealant.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a. Title, number, and date of this performance specification.
b. First Article, if required (see 4.2).
c. Conformance inspection, if required (see 4.3).
d. Packaging requirements (see 5.1).
e. Material safety data sheets, if required (see 6.3).
6.3 Material Safety Data Sheets. When specified (see 6.2) Material Safety Data Sheets will be
provided in accordance with FED-STD-313.
6.4 Key Words.
Adhesive
Elastic
Ethyl Acetate
Ethyl Alcohol
Hygroscopic
Non-Corrosive
Non-Drying
Oxidation
6.5 Changes from previous issue. Marginal notations are not used in this revision to identify
changes with respect to the previous issue due to the extent of the changes.
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Custodians: Preparing Activity:
Army - MR Air Force - 84
Navy - SH
Air Force - 84
Reviewers: Agent:
Army - MI Air Force - 99
Navy - MC
Air Force - 99
(Project 8030-2014-003)
NOTE: The activities listed above were interested in this document as of the date of this
document. Since organizations and responsibilities can change, you should verify the currency
of the information above using the ASSIST Online database at https://assist.dla.mil.
