Plastic End Caps

A reliable source for Dip Molded Plastic information and leading Dip Molded Plastic Companies & Manufacturers.

Some caps are threaded and screw on to the outside of a pipe or tube to cover the end. Other caps are more like a plug that fits snugly into the end of the tube to protect the inside. Read Moreā€¦

Plastic End Caps Plastic end caps are used to cap off the end of bars and tubes in numerous consumer products and pieces of industrial equipment. They are manufactured in a variety of shapes and sizes to match the piece they are being fitted to; from square to rectangular to circular. Tabs are sometimes added to the caps so that they can easily be pulled off if necessary. One common example of plastic end caps would be the ends of the handlebars on a bicycle. Round plastic caps are made to fit in the bars and cover the ends to keep out dirt and keep the handles covered.

Leading Manufacturers

Sellersville, PA  |  800-398-2520

We are plastic experts, and we offer many services for our customers, including dip molding and a whole lot more. No matter who our customers are, we will work our hardest to ensure that you are fully satisfied with our products.

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Molded Devices, Inc. Sellersville $$$

Medway, MA  |  508-533-6101

Innovative Coatings is a manufacturer of plastisol dip molding and fluidized bed powder coatings of epoxy, polyolefins, nylon and vinyl. Our dip coatings are of FDA-approved and biomedical grades.

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Innovative Coatings, Inc. $$$

San Antonio, TX  |  508-533-6101

Texas Dip Molding & Coating is known for our high quality custom coating that maximizes strength, hardness, flexibility and durability for parts designed and manufactured in any application.

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Texas Dip Molding & Coating, Inc. $$$

Waterbury, CT  |  203-805-4564

Let Precision Dip Coating show you what expert dip molding looks like. We match any color and offer great services to meet your specs for decorative and protective coatings and soft plastic parts.

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Precision Dip Coating LLC $$$

New Carlisle, OH  |  937-845-9411

Carlisle Plastics is a dip molding plastics manufacturer offering end caps, plastisol paint masks, thread protectors, tube closures, protective caps and decorative caps.

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Carlisle Plastics Company, Inc. $$$

Auburn Hills, MI  |  800-482-1842

Rubber & Plastics Company has 50 years of experience in manufacturing dip molding with the materials, equipment and flexibility to rapidly prototype. We provide standard and custom designed high-temp paint masks, caps, grips and plugs.

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Rubber & Plastics Company $$$
placeholder image Molded Devices, Inc. Sellersville Innovative Coatings, Inc. Texas Dip Molding & Coating, Inc. Precision Dip Coating LLC Carlisle Plastics Company, Inc. Rubber & Plastics Company

Plastic end caps are typically manufactured using one of the following processes: plastic dip molding, plastic injection molding, or plastic extrusion. The plastic dip molding process uses a heated mandrel which is dipped into a pool of liquefied plastic. As the heated mandrel enters the liquid plastic, some of the plastic adheres to the surface of the mandrel. The mandrel is then removed and heated again to allow the plastic to fuse.

Assorted Plastic Caps Assorted Plastic Caps - Carlisle Plastics Company

The plastic is allowed to cool, and it is removed from the mandrel, leaving the final product. Different material properties can be achieved by altering the mandrel temperature, dip time, and dip speed. With plastic injection molding, a plastic material is heated until it has become a liquid and then injected into a mold. Once the material cools, it can be removed from the mold, and any excess plastic is usually trimmed off before the process is finished.

In the plastic extrusion process, the material is heated and stretched over an object that holds it in place and presses it into the correct shape. Less heat is required when this method is used, and it can be much faster than plastic injection molding if the process is properly optimized.

Other features of plastic end caps can be modified, including their color. During the manufacturing process, different dyes can be added to the plastic to alter its color and to match the products they will be used in. Plumbers often use large plastic end caps to seal off pipe lines or to create an access point for future maintenance. Some caps are created with a beveled edge to create a smoother end on the tube or pipe and make protruding parts less dangerous.

Plastic End Caps Informational Video