Abrasive Lapping Paste

The Kemet range of specially formulated Lapping Compounds (White Aluminium Oxide and Silicon Carbide) have many applications but are particularly suited for the lapping of mechanical seals, valve seats and valve grinding as they retain texture and lubrication during extended lapping operations.

The main advantages include:

  • Easy to clean - Water soluble
  • Not petroleum based - environmentally friendly
  • Fast & Effective Cutting
  • Good Lubricity
  • Strictly manufactured in house to ISO 9001:2015 Quality standards
  • Only finely graded abrasives used

Kemet Abrasive Lapping Paste

Silicon Carbide Lapping Paste

The preferred abrasive for fast cutting of all but the hardest and toughest metals. It will produce a smooth flat surface, but not a polished one.

Description Micron Size Code
Silicon Carbide Paste F1200 3 Micron 1 Kg 361547
Silicon Carbide Paste F1000 4.5 Micron 1 Kg 361552
Silicon Carbide Paste F600 9.3 Micron 1 Kg 361514
Silicon Carbide Paste F800 6.5 Micron 1 Kg 362616
Silicon Carbide Paste F400 17.3 Micron 1 Kg 361551
Silicon Carbide Paste F360 22.8 Micron 1 Kg 361548
Silicon Carbide Paste F320 29.2 Micron 1 Kg 361558
Silicon Carbide Paste F280 36.5 Micron 1 Kg 361538
Silicon Carbide Paste F220 58 Micron 1 Kg 361550
Silicon Carbide Paste F180 69 Micron 1 Kg 361549
Silicon Carbide Paste F120 109 Micron 1 Kg 361689

White Aluminium Oxide Lapping Paste

Does not cut as fast as the Silicon Carbide, but it does tolerate higher grinding pressures and produces a polished finish.

Description Micron Size Code
White Aluminium Oxide Paste F1200 3 Micron 1 Kg 361544
White Aluminium Oxide Paste F1000 4.5 Micron 1 Kg 361624
White Aluminium Oxide Paste F800 6.5 Micron 1 Kg 361545
White Aluminium Oxide Paste F600 9.3 Micron 1 Kg 361543
White Aluminium Oxide Paste F500 12.8 Micron 1 Kg 361546
White Aluminium Oxide Paste F360 22.8 Micron 1 Kg 361542

All other Grit Sizes available upon request

Boron Carbide Paste

Boron Carbide lapping paste is a high performance abrasive with a hardness and chemical resistance comparable to that of diamond. It is ideal for machining hard materials by lapping, sawing or ultrasonic drilling.

Boron carbide is suitable for

  • Lapping
  • Ultrasonic Boring of Glass, semi precious stones and ceramics
  • Wire sawing of ceramics and sapphire
  • Machining of drawing dies
  • Moulds & dies
  • Wire guides
  • Valve Seats

Water soluble, available in 100g tubes in the following FEPA Grit and Average Micron sizes

Description Micron Size Code
Boron Carbide Paste F100 129 Micron 75g 363024A
Boron Carbide Paste F220 58 Micron 75g 362785A
Boron Carbide Paste F320 29.2 Micron 75g 362718A
Boron Carbide Paste F400 17.3 Micron 75g 361994A
Boron Carbide Paste F600 9.3 Micron 75g 361900A
Boron Carbide Paste F800 6.5 Micron 75g 361995A
Boron Carbide Paste F1200 3 Micron 75g 362079A

Abrasive Paste Grade and Grit Selector Guide

Grit Descriptions Average Particle Size of Abrasive Grains - Microns (0.001 mm)
1200

Extremely Fine

Polishing, High Precision Lapping
3
1000 4.5
800 6.5
600

Very Fine

For fine Polishing and Lapping
9.3
500 12.8
400 17.3
320

Fine

For Finishing, Valve Lapping, Bearings, Dies, and Gauges
29.2
280 36.5
240

Medium Fine

For Cylinder Lapping
44.5
220 58
180

Medium

General Purpose for Controlled Stock Removal
69
150 82
120

Coarse

For the Initial “Cut” Fast removal of Metal
109
100 129
80 185
50

Very Coarse

For fastest Metal Removal
338.6
36 525

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