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Walnut Shell Abrasive – Natural, Tough & Eco-Friendly Blasting Media
Product Description
Our Walnut Shell Abrasive (Walnut Shell Grit) is a naturally derived, biodegradable blasting medium made from carefully crushed and screened walnut shells. It offers an exceptional balance of hardness and softness—aggressive enough to remove coatings and contaminants, yet soft enough not to damage the underlying substrate. It is the preferred choice for surface preparation, cleaning, and polishing across automotive, aerospace, marine, and industrial applications.
Key Features & Benefits
Non-Abrasive to Substrates: Cleans effectively without etching, pitting, or dimensional change to delicate surfaces (aluminum, fiberglass, alloys, plastics, and soft metals).
High Durability & Low Dust: Dense particle structure provides multiple re-use cycles in blast cabinets, reducing media consumption and airborne dust.
100% Organic & Biodegradable: Contains no free silica, heavy metals, or chemical additives. Safe for operators and environmentally responsible disposal.
Excellent Deburring & Deflashing: Removes sharp edges and mold flash from plastic, rubber, and electronic components without surface stress.
Uniform Particle Distribution: Consistent sizing (available in standard grit ranges) ensures predictable surface profiles and reliable finishing results.
Common Applications
Industry Typical Use
Automotive & Aviation Cleaning engine components, turbine blades, aluminum wheels, and carbon removal without affecting tolerances.
Marine & Yacht Maintenance Stripping anti-fouling paint from fiberglass hulls without gel coat damage.
Electronics & Plastics Deflashing circuit boards, connectors, and molded plastic parts.
Industrial Maintenance Removing light rust, scale, and grease from molds, dies, and precision tools.
Stone & Monument Cleaning Gentle removal of graffiti and soot from historic masonry and soft stone.
Available Grades & Packaging
We offer a comprehensive range of grit sizes to match specific equipment and surface finish requirements:
Coarse Grit (e.g., 6/10, 8/12, 12/20): Fast stripping of heavy coatings and paint.
Medium Grit (e.g., 20/30, 20/40): General purpose cleaning and moderate deburring.
Fine/Polish Grit (e.g., 40/60, 60/100, 80/200): Light cleaning, final polish, and delicate deflashing.
Packaging: 50 lb (22.7 kg) heavy-duty poly bags, 2000 lb (907 kg) bulk super sacks, or custom packaging per customer request.
Technical Specifications (Typical Values)
Composition: 100% Crushed Walnut Shell
Hardness: 2.5 – 3.5 MOHS
Specific Gravity: 1.2 – 1.4 g/cc
Bulk Density: Approx. 45 – 55 lbs/ft³ (720 – 880 kg/m³)
Free Silica Content: < 1%
Why Choose Our Walnut Shell Abrasive?
Unlike synthetic plastic media that can melt or warp under heat, or mineral abrasives that can fracture substrates, walnut shell grit maintains its structural integrity and provides a cool, clean, and non-corrosive finish. It is the industry standard for "Clean and Inspect" operations.
For bulk pricing, samples, or a customized grit analysis, please contact our sales team.
