MIL-DTL-22050E (SH)
4.4.7.3.3 Volume change after aging in steam at 550oF. After aging in steam as specified in 4.4.7.3, the
volume change shall be determined in accordance with Method 6211 of FED-STD-601.
4.4.7.3.4 Compression set after aging in steam at 550oF. After aging in steam as specified in 4.4.7.3, the
compression set shall be determined in accordance with ASTM D 395 except that three 0.500 + 0.010 inch thick
specimens shall be tested and the specimens shall be held at a 25 percent deflection during steam aging.
4.4.8 Water leachable chlorides. The following test method shall be used:
a. Two test specimens, each of approximately but not less than 14 grams shall be taken. Each test
specimen shall be taken from a different sample. Test specimens for rubber bonded paper shall be taken from the
samples of the first and the last roll of the lot. Test specimen of packing material shall be representative of the
sample cross section.
b. The test specimens shall be unraveled and cut into pieces no larger than ¼ by ½ inch.
c. Each test specimen shall be weighted, transferred to an Erlenmeyer flask equipped with a reflux
condenser, covered with 200 to 300 milliliters (ml) of distilled or demineralized water and simmered in the range of
220o to 212 oF for a minimum of 6 hours. The leach water shall then be separated by filtration and the filter rinsed.
A blank determination shall be run using similarly cleaned equipment and distilled or demineralized water from the
same source.
d. The extracted chloride ion shall be determined by the mercuric nitrate titration method, ASTM D 512,
referee method A or equal, and shall be corrected by the results of the blank determination.
e. The results of each test shall be calculated as net parts per million of extractable chloride ion by weight
of the test specimen.
4.5 Toxicity. The gasket and packing material shall be evaluated by the Navy Environmental Health
Center (NAVENVIRHLTHCEN) using the administrative Health Hazard Assessment (HHA). A flowchart for this
process can be found as enclosure (1) of BUMEDINST 6270.8. The HHA is a review of the gasket and packing
material based on information submitted by the manufacturer, to assess health hazards associated with the handling,
application, use and removal of the product. Sufficient data to permit a HHA of the product shall be provided by
the manufacturer/distributor to the NAVENVIRHLTHCEN. To obtain current technical information requirements
specified by the NAVENVIRHLTHCEN, see 6.6.
4.6 Off-gassing. The gasket and packing material shall be tested in accordance with the Nuclear Powered
Submarine Atmosphere Control Manual, NAVSEA Technical Manual S9510-AB-ATM-010 Rev 2, by a
Government approved testing facility. The results shall be submitted to the Government for evaluation and approval
for use (see 3.9 and 6.7).
5. PACKAGING
5.1 Packaging. 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.
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 material furnished under this specification is intended for use in air at temperatures
up to 230oF, and for use in water, steam, and certain polar fluids at temperatures up to 280oF. This material is
especially intended for use in CO2 scrubbers, in high discharge systems, and in flexible joints. The suitability of this
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