Ralph Gabriel is the global chief engineer for John Crane, Inc., and has more than 39 years of experience in the mechanical seal industry. He can be reached at 847-967-3744 or rpgabriel@johncrane.com. John Crane is a provider of engineered products and services for process industries, including oil and gas extraction and refining, power generation, chemical production, pharmaceutical manufacturing, pulp and paper production and mining. For more information, visit www.johncrane.com.