The Blasting & Polishing Material That Cleans and Refines
Leaders in the Blasting & Polishing Industry
We provide a variety of walnut shell sizes that blast and polish everything from metals and woods to fine jewelry and gems. Our in-house raw material stock guarantees a consistent, high-quality supply without interruption.
We custom-produce and tailor sizing for all blasting & polishing applications and needs
Fits Your Process
We will work with you to supply sample product for research and development
Our walnut shells are not chemically processed, have no heavy metals, and are asbestos-free
Get a Free Sample Kit
For a free sample kit of our in-stock walnut shell, just submit your info below.Get My Kit
How Walnut Shells Improve Your Formulation
Annually renewable, your walnut shell applications are protected from supply chain bottlenecks
Durable and Reusable
Walnut shells can remove matter from surfaces without scratching or pitting underlying material
Walnut shell media can polish and clean fine metals, alloys, mechanical parts, shell cartridges, rocks, stones, coral, ivory, seeds, and more
Looking for Walnut Shell in Smaller Quantities?
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Learn the answers to some of the most common questions we receive about using walnut shells for a variety of industries.
We grow and process English walnut shells at our local California farms.
Yes, we have years of experience shipping globally. Contact us for more information.
All our shells come from local California farms and are grown to meet the highest standards in the country.
We generally recommend our 18/40 size option for car restoration. Please contact us for specific use cases.
This is dependent on the amount of old finish that needs to be removed or the final desired surface. Contact us and we can recommend the appropriate grade size option for your specific need.
It depends on the type of rust. Walnut shells will remove surface rust, but they do not profile and will not fully remove pitted rust.
Yes, walnut shells are a soft abrasive that can be used on precious metals.
Our In-Stock Blasting & Polishing Size Options
Our sizes are based on U.S sieve standards. Millimeter and inch measurements are approximate.
4/63.35 mm 0 4.75 mm
0.1320 in – 0.1870 in
6/102.00 mm – 3.35 mm
0.0787 in – 0.1320 in
6/200.85 mm – 3.35 mm
0.0331 in – 0.1320 in
8/121.70 mm – 2.36 mm
0.0661 in – 0.0937 in
12/200.85 mm – 1.70 mm
0.0331 in – 0.0661 in
14/301.40 mm – 0.66 mm
0.0234 in – 0.0555 in
18/400.425 mm – 1.00 mm
0.0165 in – 0.0394 in
20/400.425 mm – 0.85 mm
0.0165 in – 0.0331 in
35/600.25 mm – 0.50 mm
0.0098 in – 0.0197 in
40/600.25 mm – 0.425 mm
0.0098 in – 0.0165 in
40/1000.15 mm – 0.425 mm
0.0059 in – 0.0165 in
60/1000.150 mm – 0.25 mm
0.0059 in – 0.0098 in
-10095% passing 100
.150 mm, .0059 in