MIL-PRF-15624G
b.
When any change in material formulation is made from previous first article test samples.
c. When any change in manufacturing processes or conditions are made from previous first article test
samples.
d. When the product being offered is manufactured at a plant different than that of previous first article test
samples.
e.
When required by the Naval Sea Systems Command.
3.2 Material. The material shall be vulcanized synthetic rubber, which meets the applicable requirements
specified herein.
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally
preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the
operational and maintenance requirements, and promotes economically advantageous life cycle costs.
3.2.2 Form. The synthetic rubber gasket material shall be furnished in the form specified (see 6.2). This form
may be sheets, strips of rectangular cross section, shapes cut from sheets, molded shapes or extruded shapes.
Laminated form shall not be used.
3.2.2.1 Sheet. Sheet rubber shall have smooth surfaces and shall have the thickness specified (see 6.2). Unless
otherwise specified (see 6.2), the tolerances in thickness specified in table I shall apply. Unless otherwise specified
(see 6.2), sheet rubber shall be furnished in rolls 36±1 inch wide and the length shall be 60±1 inch. Rolls shall
consist of not more than four lengths of sheet. In no case shall the length of a sheet be less than the width.
TABLE I. Tolerances in width and thickness.
Tolerance
Tolerance
Thickness, Inch
Width, Inches
(Plus or Minus)
(Plus or Minus)
Less than 1/16
1
1
/32 to 1/16
1
/100 Inch
/128 Inch
1
/16 to 1/8, inclusive
1
1
/16 to 1/8, inclusive
1
/64 Inch
/64 Inch
1
/8 to 1/2, inclusive
1
1
/8 to 1/2, inclusive
1
/32 Inch
/32 Inch
1
3
1
3
/2 to 1, inclusive
/64 Inch
/2 to 1, inclusive
/64 Inch
1
1
Over 1
1 to 2, inclusive
/16 Inch
/16 Inch
Over 2
3%
3.2.2.2 Strip. Strip rubber of rectangular cross section shall have a smooth surface and shall have the cross
sectional dimensions specified (see 6.2). Unless otherwise specified (see 6.2), the tolerances in thickness and width
specified in table I shall apply. Unless otherwise specified (see 6.2), strip rubber shall be furnished in lengths of 11
feet.
3.2.2.3 Cut, molded, and extruded shapes. Cut, molded, and extruded shapes shall have the form, dimensions,
and tolerances as specified (see 6.2).
3.3 Physical requirements. The rubber gasket materials shall conform to the requirements specified in table II.
3
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