Seal Bore Extension 4-1/2" AISI 4140 L-80 STEEL 80 MYS

Seal Bore Extension 4-1/2" AISI 4140/L-80 STEEL 80 MYS

Seal Bore Extension is run to provide additional sealing bore when a long seal assembly is run to accommodate considerable tubing movement.The Seal Bore Extension has the same I.D. as the corresponding packer seal bore it is run with, thus all seals of a long seal assembly seal off in the Seal Bore Extension. If the top set of seals, normally sealing in the packer bore should get damaged, the Seal Bore Extension still provides a sealing surface for the lower seals.