This radial seal is a Genuine Husqvarna part for professional and heavy‐duty homeowner chainsaws, including the Husqvarna 555 and 556. It forms a tight barrier at rotating shafts within the engine assembly to control oil and air, helping the saw hold correct crankcase pressure and lubrication. Built from oil‐resistant materials for durability in high‐temperature, fuel‐rich environments, it helps protect internal components from premature wear. Correct sealing supports stable idle, clean acceleration, and consistent cutting performance. Sized at 21.7 mm x 32 mm x 2.9 mm for a precise fit, it replaces worn or leaking seals during routine servicing or a top‐end rebuild. As an OEM component, it matches the original specification for fit and function and is identified by Husqvarna part number 525 39 12‐01.

Key Features:
- Genuine Husqvarna OEM part for reliable fit and compatibility (PN: 525 39 12‐01)
- Helps prevent oil leakage and unwanted air ingress, supporting correct engine tuning
- Dimensions 21.7 mm x 32 mm x 2.9 mm for precise seating in the housing
- Built from durable, oil‐ and fuel‐resistant materials to withstand heat and vibration
- Supports proper crankcase pressure for easier starting and stable running
- Reduces risk of lean running and associated engine damage
- Suitable for demanding forestry, arborist, and grounds maintenance use
- Straightforward replacement during scheduled service or rebuilds

Typical Applications:
Used when overhauling or maintaining Husqvarna mid‐range pro chainsaws to restore sealing at engine rotating shafts. Commonly fitted during crankcase reseal jobs, after bearing replacement, or when diagnosing oil leaks, erratic idle, or poor acceleration. Helps ensure consistent performance in felling, logging, tree surgery, and general groundcare tasks.

Also known as:
Radial shaft seal, crankshaft seal, rotary shaft seal, lip seal, engine oil seal, crank seal.

Fits Models:
Husqvarna 545
Husqvarna 550 XP
Husqvarna 550 XPG
Husqvarna 555
Husqvarna 556
Husqvarna 560 XP
Husqvarna 560 XPG
Husqvarna 562 XP
Husqvarna 562 XPG
Jonsered CS2252
Jonsered CS2253
Jonsered CS2253 WH
Jonsered CS2258
Jonsered CS2260
Jonsered CS2260 WH