Description
Overview:
This O‐Ring is a genuine Husqvarna spare for sealing fluid and air connections on compatible machines. Made from durable black rubber, it maintains a tight seal to prevent fuel or oil leaks and to keep dust and moisture out of critical assemblies. It is designed for Husqvarna chainsaws, including the 36 and 55, and other selected Husqvarna equipment listed below. As a Genuine Part, it matches the original specification and is suitable for routine servicing or repair where the original O‐ring has hardened, flattened, or been damaged. Correct sealing helps preserve performance, ensures stable idling and lubrication, and reduces unnecessary wear on components by maintaining proper pressure and vacuum where required. Manufacturer Part Number: 740 44 05‐00 (also 740440500).
Key Features:
- Genuine Husqvarna part for assured compatibility and fit
- Tough rubber construction resists fuel, oil, and heat in normal operating conditions
- Provides a reliable seal to prevent leaks and maintain pressure/vacuum integrity
- Helps restore consistent performance and reduce mess from weeping joints
- Supports safe operation by limiting fuel and oil escape onto hot or moving parts
- Suitable for professional and DIY maintenance tasks
- Simple to fit during routine servicing with basic hand tools
- Stable dimensions and finish for repeatable sealing in original housings
- Cost‐effective preventative replacement during hose, pump, or carburettor work
- Matches OEM standards to protect warranty and service intervals
Typical Applications:
Used to seal small‐diameter joints in fuel, oil, or air paths on Husqvarna machinery, such as at pump housings, hose unions, manifolds, and similar interfaces. Typical use cases include curing seepage, restoring prime in lubrication systems, and maintaining correct vacuum for consistent running after routine strip‐down and reassembly.
Also known as:
Seal ring, rubber ring, gasket ring, packing ring, O‐seal, round sealing ring, elastomer sealing ring.
Fits Models:
254, 257, 261, 262XP, 36, 371K, 375K, 41, 51, 55, 55 Rancher, DM 406 H, DM406H, PP 455 E, PP455E, WS 440 HF, WS440HF, WS 442 HF, WS442HF, WS 462, WS462, WS 463, WS463, WS 482 HF, WS482HF
Alternate Part Numbers:
740 44 05-00, 740440500
Product Specifications
| L&S Part No. | 740 44 05 00 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 740440500 |
| Unit of Sale | 1 |
| Applications | 254, 257, 261, 262XP, 36, 371K, 375K, 41, 51, 55, 55 Rancher, DM 406 H, DM406H, PP 455 E, PP455E, WS 440 HF, WS 442 HF, WS 462, WS 463, WS 482 HF, WS440HF, WS442HF, WS462, WS463, WS482HF |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 254 | 257 | 261 | 262XP | 36 | 41 | 51 | 55 | 55 RANCHER | 371K | DM 406 H | PP 455 E | WS 440 HF | WS 442 HF | WS 462 | WS 463 | WS 482 HF | 375K |
