MM Plastic (Mfg) Co. Inc. can provide core plugs that will meet all of your requirements. We are specialists in injection molding, and we regularly work with a broad array of materials to manufacture our more than 700 different types of products. In addition, we offer custom services including assistance with the development, design, and prototyping of new products. The high volume capacity of our two advanced manufacturing facilities allows us to offer efficient and affordable production services to our customers. Our experienced employees excel at finding creative solutions to meet the diverse needs of our customers.
Core plugs, also known as frost plugs or freeze plugs, are typically used to fill the sand casting core holes on engine blocks and cylinder heads. Sand cores are used to cast the internal cavities such as coolant passages in water-cooled engines. These holes are designed to allow the sand core to be removed after casting is complete. Often they are made from thin metal alloys, rubber, as well as a range of other materials.
Quality core plugs are an important part of ensuring cooling systems remain leak free for many years. When proper engine coolant maintenance is neglected, core plugs are usually among the first components to begin leaking.
Our goal is to provide the best plastic products available at the most competitive prices on the market. Contact us for more information on our capabilities.
Core plug expertise
We can assist you in finding the best core plugs for your application, or designing a custom solution to meet your special requirements. For applications where plug access will be limited, specialized replacement plugs designed for easy installation are available. The wide range of materials we work with--such as PVC, nylon, and thermoplastic rubbers--allows us to offer a plug with the ideal physical properties.
Core plug industries
With our adaptable services and wide selection of products, we are able to serve a variety of industries. The products we regularly supply range from wine plugs and grease seals. They are used by companies around the world in applications such as electrical, automotive, and packaging.