mechanical seal उदाहरण वाक्य

"' John Crane "'is an American company, now a subsidiary of Smiths Group and provider of engineered products and services including mechanical seals, couplings, hydro-dynamic bearings, seal support systems, filtration systems and artificial lift . The company services customers in the energy services sector including production, transmission and storage, refining, power generation, petrochemical, pulp and paper, and mining industries.