Description
Overview:
This Genuine Stihl O-Ring 6x1.5 (MPN 9646 945 0340) is a small but critical seal used to prevent fluid and air leaks in Stihl machinery. Made from a fuel- and oil-resistant elastomer, it maintains a tight seal under vibration, pressure changes, and temperature swings typical of outdoor power equipment. The size is 6 mm internal diameter x 1.5 mm cross-section, giving a precise fit in correctly matched housings and grooves. It is commonly used across Stihl chainsaws, including the 076 and 041G, to keep fuel, oil, or air paths secure and stable for consistent running. As a Genuine Part, it matches Stihl's original specifications for reliability, making it a dependable replacement during servicing or rebuilds.
Key Features:
- Genuine Stihl OEM part for assured fit and performance (MPN 9646 945 0340)
- 6 mm ID x 1.5 mm section for accurate sealing in specified locations
- Resistant to petrol, oil, and common workshop solvents for long service life
- Helps prevent air leaks and fluid seepage, supporting smooth, reliable running
- Durable elastomer with round cross-section for consistent compression and rebound
- Tight manufacturing tolerances to match original grooves and gland dimensions
- Simple to install during routine maintenance or component replacement
- Suitable for sealing unions around carburettors, pumps, caps, and line connectors
Typical Applications:
Used in Stihl chainsaws to seal fuel and oil circuits, including joints around carburettors, oil pumps, tank caps, and line connectors. Ideal for restoring airtight and leak-free connections after wear, heat cycling, or hose replacement, helping to stabilise idle, improve pick-up, and reduce mess from seepage during everyday cutting and site work.
Also known as:
Sealing ring, toric ring, packing ring, oil seal ring, fuel line seal, pipe union seal, circular seal, round-section seal.
Fits Models:
041, 041AV, 041FB, 041G, 075, 076
Alternate Part Numbers:
9646-945-0340, 96469450340
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