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About StockCap

StockCap : Protective Caps and PlugsThe Leader in Product Protection

StockCap is the foundation of the Sinclair & Rush family of companies. Starting in a backyard garage with a small line of protective caps and plugs, the company has grown to become the largest manufacturer of flexible closures in the world. In addition to the large selection of stock products, we offer experienced engineers who are available to develop customized solutions for your product protection needs. Our chemists have compounded thousands of formulas.

Read more about plastisol compounding here. (GripWorks, like StockCap, is a division of Sinclair & Rush, Inc.)

To learn more about StockCap's manufacturing capabilities, click here or contact us here.

What makes StockCap a leader in product protection?

Unmatched Selection

  • More styles and sizes
  • More standard colors and materials
  • Ability to mold flexible rubber products
  • In-house finishing department offering a variety of options

Low Cost

  • As a plastisol compounder, material is bought in full truck and tanker quantities allowing for lower prices
  • Plants are designed and optimized for cost-effective product protection manufacturing

Excellent Quality

  • The StockCap Manufacturing Facility located in Arnold Missouri has been certified to the ISO 9001/2008 standard since March 2004.

StockCap can serve your global needs through our manufacturing and distribution facilities in the U.S., Mexico, China, England, Germany, and Australia.

Sinclai & Rush

StockCap is a division of
Sinclair & Rush, Inc.

111 Manufacturers Dr.
Arnold, MO 63010

Phone: 800-827-2277 or 636-282-6800
Fax: 636-282-6888

© StockCap | A Sinclair & Rush Company
Serving the USA, Canada and Mexico Markets
111 Manufacturers Drive Arnold, MO 63010 - Tel: 800-827-2277 / 636-282-6800
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