Cedar Rapids, Iowa Patent of the Year – 2024/2025
Master Packing and Rubber Company has been awarded the 2024/2025 Patent of the Year for its innovation in locomotive diesel engine sealing technology. Their invention, detailed in U.S. Patent No. 11988284, titled ‘Locomotive diesel engine power assembly cylinder head-to-cylinder liner gasket grommet’, introduces a specialized gasket system that enhances the sealing of cooling fluid passages between the cylinder head and liner.
This advancement features a single metal gasket integrated with multiple elastomeric grommets, each designed to withstand the high pressures and temperatures typical in diesel engines. The grommets possess a unique hexagonal cross-section with a radiused cavity and an outer diameter flange, ensuring a secure fit and preventing material intrusion into fluid passages. Constructed from a fluoroelastomer material infused with 10% carbon black, these grommets offer increased energy retention and compression resistance, eliminating the need for traditional coloration additives.
The real-world impact is significant. By improving the durability and reliability of engine seals, this technology reduces maintenance needs and enhances engine performance. Industries relying on heavy-duty locomotives can expect longer service intervals and decreased operational costs.
Founded in 1982 and based in Cedar Rapids, Iowa, Master Packing & Rubber Company specializes in high-quality sealing solutions for various industries, including marine, railroad, and biofuel sectors. This patent underscores their commitment to innovation and excellence in addressing complex sealing challenges.