Anti-Seize
The use of an anti-seize
product is an excellent method of preventing galvanic corrosion,
especially in hot, acidic, or caustic environments.Anti-seize resists galvanic attack by sacrificing the metals in the
anti-seize in preference to the metal parts under protection. Use on
threaded fasteners to prevent rust and seizing.
Selecting a quality anti-seize
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Zinc-Anti-seize
Good quality anti-seize has lots of metal (active ingredient) and
little grease. This makes it thick and pasty. Since metal is expensive and
grease is inexpensive, poor quality anti-seize is often a can of grease
with a sprinkling of copper flakes.
This can of Zinc anti-seize from Saf-T-Eze has 43% zinc and conforms to
MIL-T-2361.
Contrary to the opinion on the
street - copper flakes are not a sign of quality. Copper is an inexpensive
filler that often the consumer expects to see.
| Zinc rich
anti-seize is the best method of preventing corrosion seizing of
threaded fasteners under ambient temperature conditions. |
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Anti-seize Application
Temperature Guide
| Aluminum-graphite |
up to 2,000 degrees F. |
| Copper (not recommended) |
up to 1,800 degrees F. |
| Nickel |
up to 2,600 degrees F. |
| Zinc |
up to 750 degrees F. |
|
| Metal |
Type of Anti-Seize |
| Stainless Steel * |
Nickel |
| Brass against steel |
Nickel |
| Aluminum against steel |
Zinc |
| Monel, Inconel |
Nickel |
| Titanium |
Nickel |
| General purpose |
Aluminum-Graphite |
* Nickel is the preferred anti-seize for use on stainless steel since
nickel prevents stainless galling better than any other anti-seize. Nickel
also has the highest temperature rating of any anti-seize.
In ambient temperature and when maximum corrosion resistance is
required, Zinc anti-seize is better at preventing corrosion.
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Applying Anti-seize
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Apply sparingly to
male threads
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Buying Guide
The active in anti-seize is
the metal. Inexpensive anti-seize is mostly grease with a small portion of metal
whereas high quality anti-seize has approximately 43% active ingredient. Better
anti-seize will conform to a mil-spec such as MIL-T-22361 or 907E. Sacramento
Sky Ranch Inc. stocks a complete line of quality anti-seize
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Zinc Anti-seize
Part number: ZPBT-8
8 oz. can
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Nickel Anti-seize
Part number: NPT-.25
.25 oz squeeze tube
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Aluminum-Graphite Anti-seize
Part number ST-1
1 oz. tube
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