Turnaround time
2-day processing for orders under 50 gallons with expedited shipping available.
Crystolon (GSC) Series Lapping Compounds
(Silicon Carbide – High-Cut Performance)
When material needs to move—and move fast—the Crystolon (GSC) Series delivers.
Available in
– 8 Oz
– 1 Gal
– 5 Gal
When material needs to move—and move fast—the Crystolon (GSC) Series delivers.
Available in
– 8 Oz
– 1 Gal
– 5 Gal
Discover the Crystolon (GSC) Series Lapping Compounds
Formulated with high-performance silicon carbide abrasive, these compounds are designed for aggressive cutting, rapid stock removal, and tackling the toughest lapping challenges. With a hardness approaching diamond on the Mohs scale, silicon carbide outperforms traditional aluminum oxide when speed and cutting power are the priority.
Available in
– 8 Oz
– 1 Gal
– 5 Gal
Available in
– 8 Oz
– 1 Gal
– 5 Gal
What Makes GSC Different
-
Silicon Carbide Abrasive (SiC): Extremely hard, sharp, and fast-cutting—ideal for heavy-duty applications -
Aggressive Material Removal: Breaks down surfaces quickly, even on hardened or high-carbon materials
-
Angular Grain Structure: Sharp, irregular particles bite into the surface for maximum cutting efficiency
-
Designed for Tough Jobs: Excels where standard aluminum oxide compounds struggle
Applications
-
Valve lapping and seat restoration
-
Diesel engines, pumps, and heavy equipment
-
Industrial maintenance and repair operations
-
High-carbon and hardened steel components
-
Oil & gas, machining, and field service work
Finish Characteristics
Due to its aggressive cutting action, GSC compounds typically produce a duller, matte finish compared to aluminum oxide-based compounds. This makes them ideal for functional restoration rather than final cosmetic finishing.
When to Choose Crystolon (GSC)
-
You need maximum cutting power
-
Surface condition is rough, damaged, or heavily worn
-
Speed is more important than finish quality
-
You’re working in industrial or field environments
Pro Tip
-
Many professionals use GSC as a first-stage compound, followed by aluminum oxide or Linde Series compounds for refining and finishing.
Available Grits
-
100 Grit
-
280 Grit
-
600 Grit
-
120 Grit
-
320 Grit
-
900 Grit
-
220 Grit
-
400 Grit
-
1000 Grit
-
240 Grit
-
500 Grit
-
1200 Grit
Fast shipping and flexible ordering options
Streamlined ordering process designed to meet your industrial supply needs quickly and efficiently.
Shipping Options
Domestic and international shipping to support global manufacturing requirements.
Our product categories
Engineered solutions for industrial performance and precision
Gun Maintenance
Specialized compounds that drive innovation across complex manufacturing landscapes
Automotive
Precision compounds for manufacturing and maintenance
Aerospace
Critical solutions for aviation and defense operations
Medical
Specialized compounds that drive innovation across diverse manufacturing landscapes
Instrument craft
Precision materials that support intricate manufacturing and performance requirements
