CUSTOM MOLDING
We have the experience and craftsmen in house to produce unique solutions that meet or exceed the most stringent specifications. We provide the technical and tooling support you need to take your polymer injection molding project from a concept idea right through to production.
featured products

Pull Ring Plugs
PR Series
Tapered style polyethylene plugs that are easy to install and remove by hand using two built-in pull rings that lay flat for efficient packaging.

Universal Plugs
UP Series
Uniquely designed polyethylene plugs that can be installed quickly with a simple push and twist into position, yet stay securely in place until easily removed using the built-in grips.

Square Tubing Inserts
STI Series
Finishing plugs have externally tapered ribs to provide secure tube end coverage in a wide variety of applications and give your final products a polished look.
SECONDARY OPERATIONS
Whether you need injection molded parts bagged in small quantities and labelled for resale, modified to meet your specific need, or fitted with hardware before shipping, our secondary operations department can save you valuable time and money. Let us do the work, so your employees can be focused where you need them most.
NEWS & EVENTS

3 Different Types of Electrical Connector Caps
Wire connectors, electrical connector caps, and electrical connector covers all refer to the same product and have the same purpose. The goal is to connect…

What Does the Polymer Injection Molding Process Look Like?
When you picture the biggest manufacturing industries in the world, you probably think of the automotive, medical, food and beverage, and aviation industries. All of…

4 Ways Plastic End Caps Can Keep Your Product Safe
Plastic end caps may not look like much—after all, they’re simply pieces of plastic! However, these little tools can more than pull their weight when…
WHO IS POLYMER MOLDING?
Polymer Molding Inc. (PMI) is an American owned and operated manufacturer and global supplier that specializes in the custom design and production of protective coverings, closures, and components. With fully staffed tool-building, prototype and mold-maintenance departments on site, we have the means and expertise to create the best customized injection molded parts for any protective need. We also have a wide selection of industry-standard caps, plugs, netting, components and inserts that provide simple, reliable, and cost-effective protection from contamination and shipping damage. Free samples are available upon request.
COMMITTED TO A BETTER CUSTOMER EXPERIENCE
When you call Polymer Molding Inc. during normal business hours, your call will be answered by a live person, every time. It is our sincere commitment to lead the market in exceptional customer service, because you deserve to do business with a company that truly cares about you and your product needs. Our knowledgeable, friendly and helpful sales and customer service representatives will take the time to help you select the best parts for your applications at the most competitive prices in the industry. We are here to answer questions, process your orders, and prepare your shipments quickly and efficiently. Compare our pricing and see the Polymer Molding difference.