ProductsPlastic Plugs & Inserts

StockCap manufactures a complete line rubber and plastic plugs, stoppers and tubing inserts to satisfy virtually any application.

General Purpose

While highlighted by our extremely flexible, versatile and colorful vinyl plus plugs, our line of general purpose plugs also includes more rigid polyethylene plugs in over 75 sizes ranging from less than ¼ inch to 4-1/2 inches.

  Vinyl Plus Plugs

Vinyl Plus Plugs

  Tapered Plugs

Tapered Plugs

  Side Pull Plugs

Side Pull Plugs

Masking Plugs for Painting, Coating & Finishing

These high-temperature and chemical resistant plugs come in a variety of styles and were designed specifically for use in painting, powder coating and other finishing operations.

  Silicone (Tapered) Plugs

Silicone Tapered Plugs

  EPDM Tapered Plugs and Stoppers

EPDM Tapered Plugs

  EPDM Pull Plugs

EPDM Pull Plugs

  Silicone Pull Plugs

Silicone Pull Plugs

  Silicone Flange Plugs

Silicone Flange Plugs

  Flangeless Plugs

Silicone Flangeless Plugs

Tubing Inserts

Designed primarily for the fixture and furniture industries, StockCap’s line of tubing inserts includes over 40 sizes in round, square and rectangular shapes.

  Round Tubing Inserts

Round Tubing Inserts

  Square Tubing Inserts

Square Tubing Inserts

  Rectangular Tubing Inserts

Rectangular Tubing Inserts

Specialty Plugs

StockCap also features a number of specialty plugs to round out its line. The extensive line of Hanger Plugs and Poly Plugs are designed to fit with S&R’s line of VisiPak packaging tubes and containers, but their versatility makes them idea for many applications. Others are designed for very specific applications.

  Rubber Seal Plugs

Rubber Seal Plugs

  Rubber Seal Plugs with Tabs

Rubber Seal Plugs with Tabs

  Electrical Connector Plugs

Electrical Connector Plugs

  Threaded Plugs

Threaded Plugs

  Hanger Plugs

Plugs for Packaging Tubes

Generic Black Stock Caps

Custom Capabilities

While thousands of sizes of caps and plugs are stocked and ready to ship, not every application is suitable to a stock item. Many irregular shaped items require a unique mold. StockCap is the premier choice for the production of a custom molded part.

  • Design a mold utilizing numerous manufacturing processes.
  • Create and supply a prototype for testing.

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Quote / Samples

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and/or Samples

Contact StockCap for volume pricing and samples for testing and color matching.

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Protection Specialist

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Online Store

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