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 More…
Leading Manufacturers
Molded Devices, Inc. Sellersville
Sellersville, PA | 800-398-2520We 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.
Precision Dip Coating LLC
Waterbury, CT | 203-805-4564Precision Dip Coating provides dip coating services for the manufacture of soft plastic parts such as cap plugs. hand grips, and more. Decorative and protective, our services are very cost effective and we have a proven track record for on time delivery and precise manufacturing. We can match any color you need, and offer services such as assembly, die cutting, packaging, and decorating.
Carlisle Plastics Company, Inc.
New Carlisle, OH | 937-845-9411Carlisle Plastics is a dip molding plastics manufacturer offering end caps, plastisol paint masks, thread protectors, tube closures, protective caps and decorative caps.
Rubber & Plastics Company
Auburn Hills, MI | 800-482-1842Rubber & 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.
Innovative Coatings, Inc.
Medway, MA | 508-533-6101Innovative 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.
Texas Dip Molding & Coating, Inc.
San Antonio, TX | 508-533-6101Texas 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.
Plastic Circular End Caps - Carlisle Plastics CompanyPlastic 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 - Carlisle Plastics CompanyThe 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.
