About Us

Maryland Plastic Products  is a division of Maryland Ceramic & Steatite Company, Inc. For almost seventy years Maryland Plastic Products has been a leading manufacturer of molded plastic products for electronic packaging. Maryland Plastic Products offers a complete line of square, rectangular and round cases for encapsulation. This product line is made with the highest standard of material. We use Diallyl Phthalate (DAP) which is both UL-94V0 and MIL-M-14 Type SDG-F recognized, other materials can be used upon request.


Maryland Plastic Products has the ability and engineering skills to customize tooling to our customers’ needs. Our customization capabilities include; holes, standoffs, cut outs and inserts. With our in-house tooling and production facilities, which includes Isopulse Type EDM equipment, we can develop new molds and dies to specifically suit your requirements.

We have three main departments consisting of our Swiss Screw Machine Department, Injection-Molding Department and  Cast Epoxy Rod Department.

Our Swiss Screw Machine Department manufactures our cast epoxy cases along with various other parts including a full line of resistor bobbins.  The advantage of this department is that we can offer the parts with little to no tooling. Check out our Epoxy Shells page for more information.

Our Injection-Molding Department has machines from 30 ton (1-1/2oz.) to 200 ton (14 oz.) with the ability to run most thermoplastics. Utilizing our in-house tool shop, we can do the design and engineering in short order. This makes our delivery times about the fastest in the industry.  This department also offers a full line of resistor bobbins. Check out our Encapsulation Enclosures and Plastic Injection Molding pages for more information.

With our newest acquisition, the Cast Epoxy Rod Department, we have moved into another area of plastics. Maryland Plastic Products can now offer epoxy rod from .250 OD to 1.50 OD in three-foot lengths. Larger sizes can be made with little or no tooling required. This is a growing division that has become the leader in the cast epoxy rod industry.  Check out our Cast Epoxy Rod page to see the various types of rod and all the ways it can be utilized.

Our website contains all the information you need to get an idea of  Maryland Plastic Products capabilities from custom fabrication, machining of plastics to custom molding.  You will also learn about the secondary capabilities we offer: drilling, slotting, milling, machining and the bonding in of inserts and pins. We can also offer bonded cases consisting of G10 material for those short runs or engineering evaluations.  When it comes to plastic parts, you can count on Maryland Plastic Products.