Description
Overview:
This genuine Stihl O-Ring (4 x 1.5 mm / 0.16 x 0.06 in) is a compact, round-profile seal used to prevent leaks and maintain correct pressure or vacuum in small assemblies. Made from durable rubber, it delivers a tight, reliable seal in housings and grooves found on professional chainsaws such as the Stihl 044 and MS 440. As an OEM component, it is built to factory specification for size and fit, reducing the risk of leaks after servicing. Use it when repairing or maintaining joints that specify a 4 x 1.5 mm O-ring on these models. The part seats neatly, supports smooth operation, and helps minimise downtime by restoring proper sealing performance. OEM Part No. 9646 951 0155. Genuine Stihl part.
Key Features:
- Genuine Stihl OEM part for assured compatibility and quality
- Precise 4 x 1.5 mm dimensions (0.16 x 0.06 in) for consistent sealing performance
- Durable rubber construction designed for reliable compression and rebound
- Helps prevent fuel, oil and air leaks in critical chainsaw joints
- Direct replacement that fits without modification on listed models
- Supports correct system pressure/vacuum to maintain performance
- Suitable for routine servicing and preventative maintenance
- Supplied under OEM part number 9646 951 0155 to match factory spec
- Compact, circular section that seats cleanly into machined grooves
Typical Applications:
Sealing small-diameter connections in Stihl chainsaws where a 4 x 1.5 mm O-ring is specified, including fuel and oil system joints, pump and cover interfaces, and other precision housings. Ideal for fixing leaks, rebuilding components, or replacing worn seals during scheduled maintenance on the 044 and MS 440 to keep equipment running reliably.
Also known as:
Sealing ring, elastomer ring, round-section seal, rubber seal ring, gasket ring, compression ring, circular seal.
Fits Models:
044, MS 440, MS440
Alternate Part Numbers:
9646-951-0155, 96469510155
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