Description
Overview:
The O-Ring 40x4 is a genuine Stihl sealing ring used to maintain tight, leak-free joints on selected pole pruners and hedge trimmers, including the HT 100 and HT 101. Made from durable black rubber, it sits in a groove to form a reliable seal between mating parts, helping to keep oil, grease, and air where they should be. Its precise 40 mm diameter and 4 mm cross-section help restore correct sealing when the original ring has worn, flattened, or perished. As a Genuine Stihl part (9645 948 7995), it offers the correct specification and fit for compatible Stihl machines, supporting consistent performance and helping to reduce unplanned downtime caused by leaks or contamination.
Key Features:
- Genuine Stihl part for assured fit and compatibility
- 40 mm diameter with 4 mm cross-section for correct groove seating
- Helps prevent oil and air leaks at housings, tubes, and couplings
- Robust rubber construction for dependable service in typical operating conditions
- Simple to install as a like-for-like replacement of the original ring
- Supports efficient lubrication and system pressure where applicable
- Helps maintain tool performance and extends service intervals
- Suitable for regular maintenance of HT and HLA/HTA series machines
Typical Applications:
Used to seal joints in pole pruner gear housings, telescopic tube interfaces, accessory couplings, and reservoir or cap interfaces on compatible Stihl equipment. Ideal when servicing machines that show signs of seepage, pressure loss, or contamination due to a worn or flattened O-ring.
Also known as:
Toroidal seal, rubber sealing ring, metric O-ring 40 x 4, packing ring, gasket ring, 4 mm section O-ring, sealing gasket.
Fits Models:
HLA 85, HLA 85 Hedge, HLA85, HT 100, HT 101, HT 130, HT 131, HT 70, HT 70 K, HT 73, HT 75, HT100, HT101, HT130, HT131, HT70, HT70K, HT73, HT75, HTA 65, HTA 85, HTA65, HTA85
Alternate Part Numbers:
9645-948-7995, 96459487995
Product Specifications
| L&S Part No. | 9645 948 7995 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 96459487995 |
| Unit of Sale | 1 |
| Applications | HLA 85, HLA 85 Hedge, HLA85, HT 100, HT 101, HT 130, HT 131, HT 70, HT 70 K, HT 73, HT 75, HT100, HT101, HT130, HT131, HT70, HT70K, HT73, HT75, HTA 65, HTA 85, HTA65, HTA85 |
| Machine Type | Pole Pruners, Cordless Pole Pruners |
| Fits Brands | Stihl |
| Fits Models | HT70, HT70K, HT75 | HT73 | HT101 | HT131 | HTA65 | HLA 85 Hedge | HTA 85 |

