John Crane is part of Smiths Group, a global technology business listed on the London Stock Exchange. John Crane designs and manufactures seals and associated products mainly for the oil & gas, chemical, pharmaceutical, pulp & paper and mining sectors.
 

   Since being established over 90 years ago John Crane has become the acknowledged global leader in its field. Today it provides the most complete selection of engineered mechanical seals, sealing support systems and mechanical packings, complemented by power transmission couplings. John Crane products are a globally recognized and trusted brand in the oil and gas industry. The John Crane business has 20 manufacturing sites and more than 6,700 employees located in 50 countries. A&S Mechanical Seals.,Ltd.