The sleeve K 27040 is a small but important support/spacer that fits over or around nut K 27039 to provide correct axial location, protect threads and transmit clamping loads evenly in the Sulzer ZV40/48 assembly. Often used where a nut must bear against a softer face or where a controlled standoff is required, the sleeve prevents thread shear and helps maintain seal compression under vibration and thermal cycles. Manufactured from corrosion-resistant metal and inspected for wear or deformation during service, replacing a fatigued sleeve K 27040 is an inexpensive way to safeguard fastening integrity and avoid loosening or leak paths.