PROTECTO 401 VS. POLYETHYLENE

TEST

PROTECTO 401

POLYETHYLENE

160 °F DISTILLED

WATER IMMERSION

scribed panels

Rated using ASTM

D-714-8

24 months, slight red rust in scribe, no undercutting.

1-1/2 months, delamination

of film, test terminated.

120 °F TAP WATER IMMERSION

scribed panels

Rated Using ASTM

D-714-87

24 months, slight red rustin scribe, no undercutting.

6 months, film curlsback l/2″ from scribe,test terminated.

140 °F 25% SODIUM HYDROXIDE

IMMERSION

Rated

Using ASTM

D-714-87

24 months, no effect.

1-1/2 months, delamination of film, test terminated.unscribed

SALT SPRAY

ASTM B-117

scribed panels

24 months, red rust in scribe,no undercutting.

1-1/2 months, l-1/2″ under-cutting at scribe. Testterminated

Note: All materials were tested with an average film thickness of 40 mils on production-run ductile iron

pipe.

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