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Internal Laps.htm
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LAPPING COMPOUNDS

American Lap Company's lapping compounds are manufactured to exact specifications so a consistent finish is produced.  We have our stock compounds listed below and make compounds to any specifications. 

American Lap Company lapping compounds come mixed with a petroleum base or water base lapping vehicle.  Our premium compounds come in one pound cans.

LAPPING ABRASIVES AND THEIR USES

Aluminum Oxide: Aluminum Oxide should be used on soft metals because of it's unusual grain structure, relatively high degree of hardness, sharpness and malleability.   Aluminum Oxide will also cut hardened steels up to Rc 62.  This compound is also adapted to the lapping of; machine  spindles, bearings, dies, precision tools, hydraulic valves, injectors, spools and bodies and has many more uses.

Silicon Carbide:  Silicon Carbide is only suited for the lapping of hardened metals due to its characteristics of extreme hardness and sharpness.  But because of its brittleness and tendency to break down into very sharp pieces, thus produces scratches.   Silicon Carbide's use is restricted to the lapping of most gears and large valves.

Boron Carbide:  Boron Carbide is a very hard abrasive and is used for the lapping of materials with a high degree of hardness.  Typical applications are for the lapping of carbides, ceramics and very hard tool steels.

Diamond:  Diamond Lapping Compound is used to quickly lap the most difficult to cut materials.  Diamond powders can be produced to very fine micron sizes therefore can produce finest finishes in difficult to cut materials. 

ALUMINUM OXIDE LAPPING COMPOUNDS

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GRADE 320 500 600 700 900 1000 1200
PART # AL321N AL501N AL601N AL701N AL901N AL1001N AL1201N

SILICON CARBIDE LAPPING COMPOUNDS

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GRADE 320 500 600 700 900 1000 1200
PART # SI321N SI501N SI601N SI701N SI901N SI1001N SI1201N

BORON CARBIDE LAPPING COMPOUND

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GRADE 400 500 600 800
PART # BC401N BC501N BC601N BC801N

DIAMOND LAPPING COMPOUND

American Lap Company Diamond Lapping Compounds are precision graded and offered in different concentrations making it cost effective.  The compounds are color coded for easy identification and come in 5 or 10 gram syringes.   The Diamond Lapping Compound can also be packaged in jars or tubes.

MICRON SIZE PART NUMBER MESH COLOR CONCENTRATION
0-1/2 DC1/4 120,000 BROWN HEAVY
0-1 DC1/2 60,000 LIGHT BLUE HEAVY
0-2 DC1 14,000 PURPLE HEAVY
2-4 DC2 12,000 LIGHT GREEN HEAVY & MEDIUM
3-5 DC3 8000 OFF WHITE HEAVY & MEDIUM
4-8 DC6 3000 YELLOW HEAVY & MEDIUM
6-10 DC8 1500 RED HEAVY & MEDIUM
10-20 DC15 1200 BLUE HEAVY & MEDIUM
20-30 DC25 600 DARK GREEN HEAVY & MEDIUM
20-40 DC30 500 ORANGE HEAVY & MEDIUM
30-50 DC40 325 LIGHT RED HEAVY & MEDIUM
40-70 DC60 230 DARK GREY HEAVY & MEDIUM
60-90 DC90 170 BLACK HEAVY & MEDIUM

 

 

BEAVER ECONOMY LAPPING COMPOUND

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Beaver Lapping Compound is a silicon carbide grease base lapping compound.  Silicon carbide is a very sharp pointed abrasive grain that continually breaks down to leave a fine finish.  The petroleum base vehicle keeps the abrasive in suspension therefore no mixing is required.  Typical applications are: automobile valves, gears, blade sharpening and some precision lapping.    The compound is available in 1 pound cans (6 per case) 2000ml pails and 5 gallon pails.  To order 2000ml pails add "2000ml" to part number.  To order 5 gallon pails add " 5gal" to part number.

PART NO. GRIT
7A 1200
6A 1000
5A 800
4A 600
3A 500
2A 400
1A 320
A 280
B 240
C 220
D 180
NC 150
E 120
F 100
G 80
F 50
K 36

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