OEM Case Construction O-Ring #86629543 ? Seal Hydraulic Connections with OEM O-Ring Integrity This O-Ring (#86629543) seals hydraulic fittings or valve components in Case systems. OEM elastomer material resists pressure, heat, and chemical degradation. More Details Part Number: 86629543Application: Hydraulic sealing Key Features: OEM fit for exact groove placement Engineered for high-pressure use Prevents leaks and fluid loss Fits Case Models: Confirm part diagram and seal size. Specifications Part Number 86629543 Brand CASE CONSTRUCTION Category O Weight 0.001 pounds Frequently asked questions What is the part number? The manufacturer part number is 86629543. Is this a genuine OEM part? Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option. Where does this ship from? Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.