U-Cup SealThis u cup seal is an aftermarket replacement seal used inside a forklift hydraulic cylinder, with a u shaped cross section that holds high pressure on the seal lips. U cup seals are installed at the piston and rod positions during cylinder rebuilds and are consumed any time the cylinder is disassembled. Forklift hydraulic rebuilders order aftermarket u cup seals because they are mandatory in every rebuild ticket, and aftermarket seals match OE inner diameter, outer diameter, height, and durometer specs needed for clean sealing.Aftermarket replacement part, cross-references original part number AC1001083.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC1001083, ac1001083 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.