McMasters Koss Company History

Robert (Bob) McMasters

Robert (Bob) McMasters

University of Michigan – Bachelor of Business Adminstration 1959

Bob worked with Allis Chalmers, Parker Seal and rubber seal distributors in the Detroit Metropolitan area before starting the company in 1977.

Bob was President of the Red Run Golf Club, Golf Association of Michigan and Western Golf Association on his spare time culminating a long professional and personal

Martin (Marty) Koss

Michigan State University – Bachelor of Science in Mechanical Engineering 1965

Marty was a civil corps officer in the U.S. Navy Corps of Engineering at the Seebees base in Virginia

Marty worked for Standard Oil and seal distributors in the Detroit Metropolitan area before starting the McMasters Koss partnership.

McMasters Koss Founders
McMasters Koss Family Pictures

A partnership ensued with strong family values throughout the organization. Many members of the families have contributed to the success of the organization and most employees have been with McMasters Koss for an average of 15 years or more

Significant Milestones include purchase of first operational building in 1982 and implementation of QS9000 Quality System in 2000.

Since that time, the McMasters Koss corporate complex encompasses 4 buildings and over 50,000 square feet for inventory, laboratory and inspection facilities.

McMasters Koss History
Company Headquarters

In 2018, McMasters Koss sales surpassed $21MM and current management has invested in infrastructure and staffing to make McMasters Koss foremost in the automotive and truck rubber product and seal industry.

Gary Gibbs – President and Chief Executive Officer

University of Michigan – Bachelor of Science in Mechanical Engineering

Gary started his career as an engineer at United Technologies and joined GM as a project manager in 1985.

He joined McMasters Koss in 1994 and became President/Owner in 2000.

Over 40 Years experience in engineering, computer science and corporate management within automotive manufacturers worldwide.

President and CEO
Company Management

Ed Koss – Vice President

Michigan State University – Bachelor of Arts in Business Administration
Mercer University – Master of Business Administration

25 years experience in gasket and seal industry with strong background in automotive seal requirements across North America.

An dedicated engineering team and facilities have also been incorporated into the organization with state of the art oil seal test equipment, a tooling center and automated inspection machines for superior OEM support of zero defect APQP O-Rings and seals.

McMasters Koss Headquarters Complex
  • McMasters Koss Bulk Parts Shipment
  • McMasters Koss Commercial O-Ring Inventory Hallway
  • Customer Specific O-Ring Inventory
  • McMasters Koss Bulk Inventory Area
  • Shipping Department
  • Pallet ready to ship
  • Durometer Tester
  • O-Ring Micro Vu Measurement
  • ASTM Specifications for O-Rings and Rubber Seals
  • McMasters Koss Global Shipping
  • McMasters Koss Headquarters Complex
  • Oil Seal Environmental Test Machine
  • Quad Rings
  • Fluorocarbon O-Rings and Seals
  • Extruded Rubber Gasket
  • Custom Molded Rubber Seals
  • O-Rings
  • McMasters Koss PPAP with APQP Manuals
  • White Rubber Balls
  • Molded Rubber Seals
  • Oil Seals
  • Custom Molded Seals
  • Extruded Rubber O-Rings