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

made in britain

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 F800 6.5 Micron 1 Kg 362616
Silicon Carbide Paste F600 9.3 Micron 1 Kg 361514
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 100ml and 750ml tubes in the following FEPA Grit and Average Micron sizes

Boron Carbide Paste
75g (100ml) 750ml FEPA Grit Average Micron Size
363024A 363375 F100 128
362785A 363376 F220 62
362718A 363377 F320 29
361994A 363378 F400 17
361900A 363379 F600 9
361995A 363380 F800 7
362079A 363381 F1200 3

Abrasive Paste Grade and Grit Selector Guide

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

Extremely Fine

Polishing, High Precision Lapping
1000 4.5
800 6.5

Very Fine

For fine Polishing and Lapping
500 12.8
400 17.3


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

Medium Fine

For Cylinder Lapping
220 58


General Purpose for Controlled Stock Removal
150 82


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

Very Coarse

For fastest Metal Removal
36 525
kemet ISO 9001

BSI number Q05919

Over 85 years of service to industry

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