About MPRC

Master Packing & Rubber Company (MPRC) manufactures custom gaskets, seals, and packing at our Cedar Rapids, Iowa facility. With over 40 years of experience, we serve the railroad, marine, and industrial sectors with precision-engineered sealing solutions.

Every product is manufactured in-house, giving us full control over quality, lead times, and customization. Our facility is ISO 9001:2015 certified and AAR M-1003 certified for railroad applications.

What We Do

We engineer and manufacture sealing products including custom cut gaskets, metal gaskets, mechanical packing, hydraulic and pneumatic seals, mechanical seals, Flex-Tex expanded PTFE, seal kits and assemblies, and chemicals and sealants.

Industries We Serve

Our products are used across railroad, marine, and industrial applications. From GE and EMD locomotive seal kits to marine shaft packing to industrial pump seals, we build sealing solutions for demanding environments.