O-RingThis O-ring is an aftermarket replacement sealing element used in forklift hydraulic, fuel, and engine assemblies. Installed in a machined groove, it provides static or dynamic sealing against fluid and pressure between mating components. Manufactured to match original equipment inside diameter, cross section, and elastomer compound, it offers compatibility with the fluids and operating temperatures common in industrial lift truck service. SCR Forklift Parts carries this aftermarket replacement O-ring for technicians performing hydraulic, fuel system, or engine component overhauls. Always verify size, material compatibility, and application against the service manual before installation to ensure a leak-free seal and proper performance of the assembly during its expected service life.Aftermarket replacement part, cross-references original part number AC23399-79610.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC23399-79610, ac23399-79610, AC2339979610, ac2339979610 ⚠ 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.