MIL-PRF-49450/4A(CR
REQUIREMENTS:
1. The vent plug shall be made of Polyamide or equal material. The Polyamide material
shall be compounded to be static proof and shall conform to ASTM D4066-82, Class PA811.
The vent shall be colored neutral.
2. The vent shall open at 6 ± 4 psi.
3. The vent plug shall withstand 7 in-lb of torque with no damage and provide an airtight
seal for the cell at a torque of 3.0 ± 1.0 in-lb.
4. The O-Ring shall be made of Ethylene Propylene Rubber or equal material.
DRAWING NOTES:
1. All dimensions are in inches, unless specified otherwise.
2. Slot dimensions - .050 ± .010 in. wide and .090 ± .010 in. deep.
3. Slit dimensions (minimum) -.060 in. high and .300 in. across.
4. Distance from end of thread to surface A shall be .035 ± .010 inch.
.208 + .005
49450-3
.070 + .003
FIGURE 2. M49450/4-1 0-Ring.
Changes from previous issue. Marginal notations are not used in this revision to identify changes
with respect to the previous issue due to the extent of the changes.
Custodian
Preparing Activity:
Army-CR
Army-CR
(Project 6140-A832)
2