Great Lakes Rubber Company is an ISO / IATF 16949 manufacturer of precision, custom molded rubber products and prototypes since 1979. We specialize in producing close tolerance dynamic seals and bonding rubber to other materials. Great Lakes Rubber is a wholly owned subsidiary of MAC Valves, Inc. since 1989. We have a variety of specialty compounds developed for use in long-life dynamic applications as well as compounds that abide by UL, MIL, ASTM, and FDA specifications. Many of our compounds are designed for: Low or constant coefficient of friction Environmental resistance Wide temperature range performance Great Lakes Rubber is vertically integrated to provide full range of customer services including custom rubber development, rubber testing, molding, mixing, post molding operations, just-in-time delivery, and strategic sourcing. Our lean organizational structure is created through use of the group system, an innovative human resource philosophy. By empowering employees, the group system provides a cost-effective, customer-focused company. We are fully committed to Taking Care of Our Customers. Great Lakes Rubber is constantly involved in the rubber industry, aggressively keeping an eye out for new technologies as it longs to remain on the cutting edge of rubber innovation. Great Lakes Rubber is currently a member of: Automotive Industry Action Group (AIAG) Automation Alley ACS Rubber Division Association for Rubber Products Manufacturers (ARPM) American Society for Testing and Materials (ASTM) Michigan Rubber Group Detroit Rubber Group Through maintaining collaborative relationships with rubber industry experts, Great Lakes Rubber uses its decades of expertise to provide advanced material solutions to customers. We invite you to consider us in helping solve your difficult rubber application problems.