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|  MIL-E-51420A(EA)
4.3 Preproduction inspection.
4.3.1 Sample.
4.3.1.1 Edgeseal material. A preproduction sample of 55 gallons of edgeseal
material shall be produced using the same methods, materials, and equipment as
will be used in regular production.
4.3.1.2 Filter elements (type I only). A preproduction lot of filter ele-
ments shall be produced in accordance with the preprocluction provisions of
MIL-F-51425.
4.3.2 Inspection procedure.
4.3.2.1 Edgeseal material. A l-quart specimen shall be taken from the pre-
production sample and test slabs shall be prepared as specified in 4.4.4.1 for
testing in accordance with 4.4.4.2 through 4.4.4.7. In addition, a portion of
the l-quart specimen shall be tested for viscosity in accordance with 4.4.4.8.
4,3.2.2 Filter elements (type I only). The preproduction lot shall be
examined and tested in accordance with the preproduction provisions of
MIL-F-51425 to deter-mine compliance with the compatibility requirement speci-
fied in 3.2 (see 6.6).
4.3.3 Acceptance/rejection criteria. If the edgeseal material fails any of
the tests specified in 4.3.2 it shall be rejected.
4.4 Quality conformance inspection.
4.4.1 Lotting. A lot shall consist of the edgeseal material of one type
produced by one manufacturer in no more than 24 consecutive hours under essen-
tially the same manufacturing conditions and with no change in materials, pro-
vided the operation is continuous. In the event that the process is a batch
operation, each batch shall constitute a lot (see 6.3)-
4.4.2 Sampling. In the case of a continuous process, the unit of product
shall be 5 gallons. A sample of five units of product shall be taken at random
from each lot. From each container in the sample, a l-quart specimen shall be
removed and placed in a clean, dry container labeled to identify the specimen
with lot and sample container represented* In the case of batch processing, a
5-gallon sample shall be taken from each batch while the material is stored in
the final mixing tank. From the 5-gallon sample a l-quart specimen shall be
removed and placed in a clean, dry container labeled to identify the specimen
.
with batch represented.
4.4.3 Inspection procedure. Test slabs shall be prepared from each l-quart
specimen as specified in 4.4.4.1, and the slabs shall be tested in accordance
with 4.4.4.2 through 4.4.4.7. Also, a portion of each 1-quart specimen shall
be tested as specified in 4.4.4.8.
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