The Carrier Ring concept consists of a solid metal ring with a machined recess in each face. Spiral wound gaskets are then located in each of the machined recesses. This type of arrangement has been successfully used in sealing problematic flanges and vessels in the nuclear, power and petrochemical industries. The major benefits of the carrier ring assembly are due to the double spiral wound gasket being present. This results in a very high recovery gasket, ensuring that the bolt load is maintained on the sealing elements when arduous pressure/temperature cycling occurs in service, thus maintaining a seal.
Carrier Rings can be supplied for both small and large diameter nominal bores up to class 2500 pressure rating. They can be used on flat face, raised face and tongue in groove type flanges, or any non-standard assembly where high operating pressure/temperature conditions dictate the selection of the absolute spiral wound seal.
