MIL-PRF-22019E
TABLE I. Performance requirements.
Type I and Type II
Test
Requirements
Paragraph
Characteristics
Reference
Seam Strength
Type I: 25 % (max)
4.6.2
1. As received material sealed and tested at
Type II: 50 % (max)
room temperature (seal separation)
2. Sealed after aging at 160 °F for 12 days
Type I: 25 % (max)
Type II: 50 % (max)
and tested at room temperature (seal
separation)
Seam and material water resistance
Seams and barrier shall have no
4.6.3
leakage
Puncture resistance
Type I - 10 lb (min)
4.6.1
Type II - 6 lb (min)
4.6.4
Compatibility with copper
No pitting, etching, dark tarnish
(classification 3), or corrosion
(classification 4) of vapor exposed
surface. Discount attacks within
1
/16-inch of specimen.
Vapor inhibitor ability (VIA)
No more than a total of 3 corrosion
4.6.1
spots on 3 plugs. No corrosion spot
greater than 300 microns in
diameter.
Vapor inhibitor ability (VIA) after exhaustion
No more than a total of 3 corrosion
4.6.1
spots on 3 plugs. No corrosion spot
greater than 300 microns in
diameter.
Contact Corrosivity
No corrosion, etching, or pitting
4.6.1
Low temperature flexibility
No delamination, cracks, or tears
4.6.6
Blocking resistance
No blocking, delamination, or
4.6.1
rupture
Tearing strength (Elmendorf)
50 grams (min)
4.6.1
Transparency
4.6.1
a. As received
Lettering shall be legible
b. After aging 12 days at 160 °F
Lettering shall be legible
Delamination (oil resistance)
No swelling, delamination,
4.6.1
embrittlement,or seal leakage
Long term protection
No corrosion of steel panels.
4.6.5
Barrier material shall comply with
transparency requirement
Water resistance of marking
Markings shall be clear and legible
4.6.1
5
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