MIL-R-83248C
3.4 Dimensions and tolerances
3.4.1 Sheets and strips. Unless otherwise specified (see 6.2) the width of the sheet material shall be 36 ± 1 inch, and the tolerances on thickness shall be as shown in table V. The width of strip material, or of shapes cut from sheet, shall be as specified by the procuring activity, within a tolerance of ± 5 percent. The thickness of strip material, other than shapes cut from sheet, shall be as specified by the procuring activity within a tolerance of ± 5 percent, and the length shall be as specified by the procuring activity, within a tolerance of ± 1 percent.
TABLE V. Thickness tolerances for sheet
Nominal thickness (inch) Tolerance (inch)
0.060 and less ± 0.010
Over 0.060 to 0.120, inclusive ± 0.016
Over 0.120 to 0.500, inclusive ± 0.031
Over 0.500 to 1.000, inclusive ± 0.047
Over 1.000 ± 0.063
3.4.2 0-ring dimensions. Dimensions and tolerances of o-rings shall be in accordance with MIL-R-8324811 and
MIL-R-8324812, as applicable.
3.4.3 Molded parts dimensions. Unless otherwise specified (see 6.2) dimensions and tolerances of molded parts
(excluding o-rings) and extruded shapes (including tubing) shall be as specified in the contract or order.
3.5 Color. The color of the material furnished to this specification shall be either black or brown. No other color shall be acceptable.
3.6 Identification of material
3.6.1 Sheets and strips. Unless otherwise specified (see 6.2) sheet material (including strips cut from sheets) shall be marked to show the specification number, type, class, and the manufacturer, the manufacturer's designation (compound and lot number), and the cure date by quarter and year; for example 2Q82, thus:
MIL-R-83248, Type II, Class 2
Compound No. Lot No.
Cure date
XYZ Co.
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