Makers of Fine Custom

Radial Shaft Seals &

Precision Custom Molded Products.

No job too small.

No challenge too big.

No project too demanding.


Fill out the Order Form to submit your specifications, review our Sales Terms & Conditions, and email your order or inquiry to


Seal Testing

• Muddy water—1/2 shaft
• Muddy water—spray
• Low temperature start tests—(-40°)
• Dynamic-torque measurement
• Thermal shock—ice bath plunge
• Life test
• Elevated-temperature life test
• Lip-inversion test at assembly
• Air-leak test
• Instron – Tensile Tester
• FTIR – Fourier Transform Infrared Spectrophotometer
• Mixer – 5.5L Shaw K-1
• RPA 2000 – Rubber Processability Analyzer

• Hot Oil Seal Testing Machines

Most of our test fixtures are designed and built in-house. Learn more about our facilities, testing equipment, and processes here.

If you are looking for custom radial solutions for your bearings, you've come to the right place.  Cooper Products develop the highest-quality radial shaft seals for even your most unusual and challenging designs and applications - all made to order in the United States for your special needs.

* ISO/TS 16949:2009 certification

210 Fair Street
Laconia NH 03246 USA
PH: (603) 524-3367
FX: (603) 524-4620

Cooper Products sealing solutions protect more than bearings, equipment, and processes. They protect your reputation.

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Terms and Conditions of Purchase

Terms and Conditions of Sale


Cooper Products Brochure