MIL-PRF-15624G
3.4 Workmanship. The workmanship shall meet the requirements of this specification and gasket surfaces shall
be free of surface voids, tears, rips, cuts, and free from all foreign matter that may affect the use of the finished
product.
3.5 Toxicity. When evaluated in accordance with 4.7, the gasket material shall have no adverse effect on the
health of personnel when used for its intended purpose and shall not cause any environmental problems during waste
3.6 Off-gassing. The gasket material shall be certified for and assigned a usage category of either "Permitted"
or "Limited" in accordance with NAVSEA S9510-AB-ATM-010 chapter titled "Material Control Program" (see 4.8
and 6.5).
3.7 Identification. Material supplied under this specification shall be identified in accordance with
MIL-STD-190. Class I material shall be marked with a yellow color and Class III material with a red color. No
environmental color identification is necessary for Class II material. Marking shall be done with a permanent
marking material.
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. When required (see 6.2 and 3.1.1), all tests and examinations listed in 4.5 and 4.6
through 4.8 shall be conducted on samples from (or representing) the first lot of material.
4.2.1 Rejection for nonconformance. If any of the first article examinations or tests do not conform to the
applicable requirements, this shall be cause for denial to proceed with the production of gaskets.
4.3 Conformance inspections. Conformance inspections shall include the examinations specified in 4.5, and
the conformance tests specified in table II. Conformance inspections shall be conducted on samples from (or
representing) all lots.
4.4 Sampling.
4.4.1 Lot. For the purposes of sampling, examinations, and tests, a lot shall consist of not more than one class
of material of the same form and dimensions, produced in one plant under the same conditions, not exceeding 2500
pounds, and offered for delivery at one time.
4.4.2 Sampling for examination. Random samples shall be taken from each lot in accordance with
MIL-STD-1916 for the examination specified in 4.5. A unit area of material is defined as one square foot,
regardless of thickness.
4.4.3 Classification of defects. (see 6.6.1 and 6.6.2) Refer to MIL-STD-289, MIL-STD-298, and MIL-STD-
407 for classification of defects in rubber sheet material, rubber extruded goods, and rubber molded items,
respectively.
4.4.4 Sampling for tests. Representative samples shall be taken at random from each lot that passes the
requirements of 4.5 in sufficient quantity to conduct the first article inspection or the conformance tests specified in
4.2 and 4.3. If the items are of such size or shape that test specimens cannot be prepared from them, a substitute
sample shall be provided in the form of a piece or pieces of rubber having dimensions appropriate to the tests
required. The substitute sample shall be certified to be of the same material and equivalent cure as that used in the
lot of finished material offered for delivery.
4.5 Examination. Each of the samples taken in accordance with 4.4.2 shall be subjected to surface examination
for workmanship, marking, dimensions, and tolerances. MIL-STD-289, MIL-STD-298, and MIL-STD-407 shall be
used to determine and evaluate visual defects in rubber sheet material, rubber extruded goods, and rubber molded
items, respectively. Acceptance criteria shall be as specified (see 6.2).
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