MIL-PRF-24790A (SH)
TABLE VI. Conformance inspection.
Inspection
Requirement
Test method
Group A
Workmanship
3.8
4.5.1.1
Dimensions
3.6
4.5.1.1
Group B
Flexibility
3.3.1
4.6.1
Fluid compatibility
3.3.2
4.6.2
Flexibility
3.3.2.1
4.6.2.1
Dimensional stability
3.3.2.2
4.6.2.2
Tensile strength
3.3.2.3
4.6.2.3
TGA analysis
3.3.3
4.6.3
Halogen concentration
3.4.1
4.6.4.1
Total sulfur concentration
3.4.2
4.6.4.2
Other detrimental materials
3.4.4
4.6.4.3
Group C
Simulated service testing
3.5
4.6.5
Packing gland leakage rates
3.5.1
4.6.5
Shaft temperature
3.5.2
4.6.5
Shaft wear
3.5.3
4.6.5.1
Fixture cavity residue
3.5.4
4.6.5
Replacement of packing rings
3.5.6
4.6.5
4.4.1 Lot. For purposes of quality conformance and test sampling, a lot is defined as all finished packing of
one class, type and size, produced in one facility, using the same production processes and materials, and being
offered for delivery at one time.
4.4.2 Sampling.
4.4.2.1 Sampling for visual examination of packing material. At a minimum, the contractor shall randomly
select samples from each lot of completed spools or reels of packing as specified in table VII, and inspect them as
specified in 4.5.1.1 (see 6.7).
TABLE VII. Sampling for visual examination of packing material.
Lot size
Sample size
2 to 50
5
7
51 to 90
91 to 150
11
151 to 280
13
281 to 500
16
501 to 1,200
19
1,201 to 3,200
23
3,201 to 10,000
29
10,001 to 35,000
35
4.4.2.2 Sampling for tests. At a minimum, the contractor shall randomly select a sample quantity from each
lot of completed spools or reels of packing as specified in table VIII, and test them as specified in 4.6.1 through
4.6.5 (see 6.7).
7
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