991-00021 Hydraulic Cylinder Seal Kit For JCB 3CX 4CX Backhoe Loader For Sale

**991-00021 Hydraulic Cylinder Seal Kit | For JCB Backhoe Loaders**Aftermarket full overhaul hydraulic seal kit, designed to eliminate cylinder oil leakage and restore stable digging, lifting and stabilizing performance for JCB backhoe loaders. It is a direct replacement for OEM part 991-00021, with seal dimensions precisely matching original factory cylinder groove specifications.### Key Specifications- OEM Part Number: 991-00021 / 991/00021 / 99100021- Application: Boom, dipper, bucket and stabilizer hydraulic cylinder complete rebuild & routine maintenance- Seal Material: High-pressure NBR main seals, PU dust wipers, PTFE wear-resistant guide rings- Max Working Pressure: Up to 32MPa- Manufactured to strict OEM dimensional standards for reliable long-term sealing### Compatible ModelsJCB backhoe loader series: 3CX (all variants), 3DX, 4CX, 4DX, 214, 215, 217*Note: Please confirm your machine serial number and cylinder size before purchase to ensure compatibility.*### Product Features1. Strict OEM groove dimension standard, direct drop-in installation without modification2. Excellent abrasion, oil and pressure resistance for heavy-duty construction and earthwork sites3. Complete set contains all required sealing components for one cylinder full overhaul### Package Includes1 set 991-00021 hydraulic cylinder seal kit for JCB backhoe loaders### After-sales Policy14 days free return & exchange, 3 months manufacturer warranty