John Crane UK Limited

Paul Phelan

Nicholas Derek Quarmby

A composite seal face ring has an inner ring () made of material with good tribological properties, the inner ring () being pre-compressed by an outer ring () with a high tensile strength and a thermal coefficient of expansion substantially equal to that of the inner ring (). The seal face ring is assembled by compressing the inner ring () and/or expanding the outer ring () by fluid under pressure, before inserting the inner ring () into the outer ring ().

Growing community of inventors

Manchester, United Kingdom

Paul Phelan