Carlisle Plastics manufactures and supplies high-quality plastic round caps in a wide variety of sizes and finishes for industrial, commercial, and consumer applications. Our round end caps are made from flexible, dip-molded PVC (plastisol), offering a soft, durable, and chemical-resistant solution for protecting, sealing, masking, or finishing virtually any cylindrical or rounded surface.
We maintain an extensive selection of stock production dies for plastic round caps, which means many of our most popular sizes are available without any tooling costs or delays. For specialty applications, our in-house tool shop can assist with your design and produce custom dies to accommodate non-standard dimensions, wall thicknesses, or unique material formulations. Whether you need a simple dust cap or a branded end piece for a product line, we can deliver the perfect fit. All parts are made to order.
Why Choose Our Plastic Round Caps?
Our PVC round caps are prized for their versatility, performance, and clean appearance. They can serve as both decorative finishing elements and rugged, protective barriers—ideal for everything from retail products to heavy-duty equipment. These caps are easy to install, conform tightly to the shape of the part, and remain secure during shipping, storage, or operation. The flexible plastisol material resists cracking, UV exposure, abrasion, and harsh chemicals, making it well-suited to demanding environments.
In addition to traditional black or red round caps, we offer a wide range of color options for branding, safety marking, or color coding. We can also add grip rings, high-gloss or matte finishes, and incorporate pull tabs for easy removal. All of our plastic caps are manufactured in the USA with quality control standards that meet or exceed industrial requirements.
Typical Applications
- Thread Protectors: Prevent damage to internal or external threads on bolts, screws, pipes, and fittings during shipping or assembly.
- Storm Panel Thread Protection: Cover threaded anchors on hurricane storm panel systems when panels are removed to help prevent corrosion and injury.
- Industrial Masking: Serve as protective covers during finishing operations such as powder coating, painting, sandblasting, or anodizing.
- Dust & Moisture Barriers: Keep out contaminants and preserve internal component integrity in storage or transport.
- Shipping Protectors: Safeguard sharp or fragile ends of tools, tubes, and connectors during handling and transit.
- Color Coding: Quickly identify parts by size, function, or destination using color-coded round caps.
- Connector & Terminal Covers: Shield electrical terminals or fluid connectors from debris or short circuits.
- Decorative End Finishes: Provide a clean, professional finish to consumer-facing products such as furniture, equipment, signage, or displays.
Customization Options
If your application calls for something beyond our standard line, we offer a wide range of custom options for your round PVC caps:
- Custom diameters and lengths
- Variable wall thicknesses
- Color-matched finishes
- Glossy, matte, or textured surfaces
- Pull tabs for manual removal
- Branding or logo imprinting via pad printing or hot stamping
Our highly experienced team will work closely with you to ensure your dip-molded round caps meet all fit, function, and performance specifications.
Industries We Serve
- Automotive and transportation
- Aerospace and defense
- Industrial manufacturing
- Plumbing and HVAC
- Electronics and telecommunications
- Medical equipment and device assembly
- Furniture, fixtures, and display manufacturing
Request a Quote
Ready to size your round caps or discuss a custom solution? Contact us and our team will help you select the right material, dimensions, and finish for your application.
