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CEI
139.632
O-Ring
Vehicle Manufacturers
MERCEDES(2 items)
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An O-ring is a round rubber sealing ring that sits in a groove to seal a joint against fluid or gas.
Compressed between two surfaces, it deforms to fill the gap and blocks leaks even under pressure; the material is matched to the fluid and temperature.
O-rings seal connections in the fuel, hydraulic, cooling, and air systems. The correct O-ring matches the groove size and the fluid it must resist.
Frequently asked questions
Does 139.632 have compatible (OE) part numbers?
Yes — it is linked to 2 OE-compatible part number(s), shown in the compatible parts section above.