Description
Overview:
This O-Ring 28.17x3.53 is a genuine Stihl OEM sealing component designed to stop leaks and maintain correct pressure or vacuum in your machine's assemblies. Manufactured from durable rubber for dependable sealing performance, it restores tight joints between mating parts and helps keep fluids and air where they should be. With precise dimensions of 28.17 mm x 3.53 mm, it is engineered for a correct fit in compatible Stihl equipment. Suitable for use on the Stihl SR 320 and SR 400, and selected Stihl hedge trimmers and battery models, it is ideal as a routine service replacement when old seals become flattened, brittle, or damaged. Part number 9645 945 7790.
Key Features:
- Genuine Stihl part for assured fit and compatibility
- Dimensions 28.17 mm x 3.53 mm for accurate sealing performance
- High-quality rubber construction for reliable, long-lasting use
- Helps prevent fuel, oil, or air leaks to maintain machine efficiency
- Supports correct pressure/vacuum in relevant assemblies
- Straightforward to replace during routine servicing
- Resists common wear from temperature changes and vibration
- Helps restore performance after a seal has hardened or flattened
- Suitable for selected sprayers/mistblowers and hedge trimmers across SR, HS, and HSA ranges
- OEM specification for consistent, repeatable results
Typical Applications:
Used wherever a circular seal is required in compatible Stihl machines, such as junctions between housings, caps, covers, manifolds, and connectors. Commonly replaced during maintenance to cure minor leaks, improve pressure retention in sprayers/mistblowers, and ensure reliable operation in hedge trimmers. Ideal for preventative servicing when signs of seepage or a flattened ring are present.
Also known as:
Seal ring, sealing ring, gasket ring, rubber ring, O seal, toroidal ring, packing ring.
Fits Models:
HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86 R, HS 86 T, HSA 130 R, HSA 130 T, HSA 94, SR 320, SR 400
Alternate Part Numbers:
9645-945-7790, 96459457790
Product Specifications
| L&S Part No. | 9645 945 7790 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 96459457790 |
| Unit of Sale | 1 |
| Applications | 400, HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 82, HS 86 R, HS 86 T, HS81, HS81R, HS81RC, HS81T, HS81TC, HS82, HS86, HS86R, HS86T, HSA 130 R, HSA 130 T, HSA 94, HSA130R, HSA130T, HSA94, SR 320, SR 400, SR320, SR400 |
| Machine Type | Mist Blowers, Petrol Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | HS81, HS86 | HS82 | HSA94 | SR 320, 400 | HSA130R, HSA130T |
