SKF S9B-28X39X4.2-AD1 — Hydraulic rod seal / buffer seal
SKF · Seals & Gaskets · Hydraulic Rod & Buffer Seals
SKF S9B-28X39X4.2-AD1 hydraulic rod seal / buffer seal. Hydraulic cylinder rod-side sealing element — primary rod seal (PU / thermoplastic polyurethane, filled PTFE, elastomer) or upstream buffer seal absorbing pressure spikes. Rated to 400-700 bar depending on execution. Groove per ISO 5597 / ISO 7425-2. Suitable for deck cranes, hatch covers, steering gear, hydraulic winches. Designation follows the SKF alphanumeric identification convention where the numeric block encodes the boundary plan and the suffix declares execution options (material, sealing, cage, precision, clearance, lubricant). Genuine SKF supply carries the SKF logo etch or moulded mark and hologram-authenticated packaging.
Specifications
- Part number
- S9B-28X39X4.2-AD1
- HS code
- 4016.93
- Material
- As declared by SKF designation suffix
- Temperature range
- Per SKF product data
- Standard
- SKF designation convention (see description for governing ISO / DIN)
Compatibility
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.
Also known as — OEM cross-references & superseded numbers
- Trelleborg 92839421
- Parker 92839421
- Freudenberg 92839421
- Hallite 92839421
- Competitor equivalent: 92839421 (Trelleborg)
- Competitor equivalent: 92839421 (Parker)
- Competitor equivalent: 92839421 (Freudenberg)
- Competitor equivalent: 92839421 (Hallite)
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