Chesterton 1510 is a new generation mechanical seal for general purpose use. With Chesterton 1510 you get a reliable seal through temperature cycling and intermittent process with monolithic seal faces. The design of Chesterton 1510 allows for in service impeller adjustment with the unique centring strap. It mounts easily on various types of rotating equipment using Chesterton T.A.B.S. The Chesterton 1510 prevents damage to your equipment and internal components via true non-fretting design.