We offer a wide variety of custom shapes molded in both rubber and plastic to meet a broad range of performance requirements.

We work with engineering teams to determine the best geometry, material, and production process to meet technical and cost targets.

McMasters Koss has decades of experience supplying custom molded seals to the automotive, oil & gas, food & beverage, appliance, electronics, and heavy truck industries.

We also supply custom molded rubber parts with bonded metal, plastic or fabric reinforcement.

Let us know your application and we’ll help determine the best materials and process for your project.