Great People. Great Products. Great Customers.

Creating exceptional customer experiences

In the piston ring industry since 1929

The grover experience

A Global Leader In

Piston Ring Innovation, Manufacturing & Engineering

Since 1929, Grover has delivered custom piston rings with materials and surface preparations specified to meet our customers’ specifications. Collaborative engineering and responsiveness are key factors to making us the most trusted brand in industrial piston rings. We are constantly innovating new ways to solve complex problems, reduce lead times and cut costs.

More About Grover Corporation

5-Step Proven Process

The Grover Experience

Full Process Details
  • 1
    Listening & Learning
  • 2
    Team-based Discovery
  • 3
    Highest Value Options
  • 4
    Crisp Execution
  • 5
    Continuous Improvement



Our own proprietary process of ensuring that the shape of your rings is correct.


Grover has the broadest inventory of piston ring material to meet the changing demands of the industry. Grover’s materials are controlled for reliability, consistency and adhering to SAE specifications.


Grover uses material and surface treatments to meet your application needs. Mating surface, lubricating requirements, corrosion resistance, wear & friction reduction are evaluated to ensure customer satisfaction.