Lapping Grinding Compounds

Lapmaster lapping and grinding compounds are abrasive pastes designed for the precision cutting and surfacing of metals, ceramics, and other composite materials.  Used as a secondary process to traditional grinding, milling, boring, and EDM machining, Lapmaster compounds allow final finishing of material surfaces not practical with other mechanical methods.

Lapmaster lapping and grinding compounds are recommended for the following applications:

  • Producing an ultra-flat surface such as the lapping of gauges, valve seats, and mechanical seal faces.
  • Smoothing surfaces like shaft surfaces and bearing races.
  • Creating perfectly-mated parts for running-in gears and finishing industrial valves.
  • Cleaning surfaces and removing material too difficult to remove by other methods, as in finishing hardened tool steel.

Lapmaster compounds are formulated with abrasive grains including aluminum oxide, silicon carbide, and boron carbide suspended in either an oil based or water based gel.  These compounds are classified by the abrasive grit size, ranging from very coarse for higher stock removal requirements to extremely fine for high precision flatness and surface finish requirements.

Abrasive Grain Selector Guide

  • Black Silicon Carbide:  The most popular abrasive designed for fast stock removal and mid range surface finish requirements of all but the hardest and toughest materials
  • Brown Aluminum Oxide:  Cuts slower than silicon carbide, but tolerates higher grinding pressures and yields more precise flatness and finer surface finishes.
  • Boron Carbide:  Designed for the toughest grinding and lapping jobs, this abrasive is nearly as efficient as diamond in cutting the hardest materials such as high speed steel, industrial ceramics, carbide cutting tools, wire drawing dies, and aerospace alloys.

View Our Lapping & Grinding Compound Online Catalog