MIL-DTL-45301E
3.7.2 Accelerated aging for classes 4 and 6 tread elastomer. Separate samples of unmixed
classes 4 and 6 tread elastomer shall be oven aged. The samples shall then be mixed and shall
meet the after aging Mooney requirements specified in table IV (see 4.11.2).
3.7.3 Ozone resistance. The elastomer materials used in the solid tires shall be resistant
to ozone exposure (see 4.11.3).
3.7.4 Low temperature flexibility. The elastomer shall withstand a low temperature range
of -40°F (-40°C) (see 4.11.4).
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are
classified as followed:
a. First article inspection (see 4.1.2).
b. Conformance inspections (see 4.1.4).
4.1.1 Inspection conditions. Unless otherwise specified herein (see 6.2), all inspections
shall be performed in accordance with the test conditions specified below:
73 + 18°F (23 + 10°C)
a. Air temperature
b. Relative humidity
50 + 30 percent
c. Barometric pressure 28.5 (+2.0, -4.5) in. of mercury (Hg)
[96 (+7, -15) kilopascals (kPa)]
4.1.2 First article inspection. Unless otherwise specified (see 6.2), first article inspection
shall be performed on the quantities of tread elastomers listed below, when a first article sample is
required (see 3.1). Unless otherwise specified (see 6.2), these tests (denoted by an asterisk (*)) in
table V shall be conducted by the Government at a place designated by the Government. The
contractor may, upon request, witness the tests conducted by the Government.
a.
Class 1: 10 preformed pieces.
b.
Class 2: 3 rolls.
c.
Classes 3, 4, 5, and 6: 360 lb (164 kg).
d.
All classes: Five (5) platen press sheets (see 4.5). If several die sizes of class
1 and class 2 tread elastomer are ordered, unless otherwise specified (see 6.2),
die size for tire size 26 x 6 and die size for tire size 26 x 2 1/8 shall be furnished.
This inspection shall include the examinations of 4.1.3.4 and the tests of table V.
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