MIL-PRF-121 CREPE NSN 8135-00-753-4662

(FORMERLY MIL-B-121)

Barrier Material: Greaseproof, Flexible, Waterproof, Noncorrosive, Medium Duty, Nonheat Sealable and Stretchable G/A TII C/2

Structure: Creped Natural Kraft/Polyethylene

This material is intended for applications where other more protective barrier materials are not required. This material is essentially used as an intimate wrap to maintain and protect coatings of oily or soft preservative in contact with metal surfaces to which applied. It is also used where it is necessary to insulate the metal surfaces of packaged items from hygroscopic or corrosive elements of the pack; where contact of required outer wraps of other barrier materials would contaminate the metal surfaces of the packaged items.

Physical Properties

PROPERTY

TYPICAL VALUES

UNITS

TEST METHOD
Caliper

20.0

Mils
Yield

4,640

sq in/lb