Glossary / Engine

o-rings

20 Episode Mentions

Too Afraid to Ask

O-rings are rubber seals that help keep fluids from leaking in cars. They are shaped like a circle and are used in many parts of the engine and other systems.

Technical Definition

O-rings are circular seals used to prevent leaks in various automotive components. They are often made of rubber or other materials and can degrade over time, especially in extreme temperatures.

Hear It Discussed

"he cleaned up the oil took the ring off and i'll replace that little he said there's a little ring in there there are a little four little o-rings yes replace that good"
#2631: The MechanXfiles The Best of Car Talk 18:17

"those o-rings tend to leak when it's cold. They run kind of like a heat pipe"
Three Guys Talking Cars So You Can Save ON Auto Repairs Under The Hood show 12:29

"...I would almost guarantee you those round O-rings are now crushed square."
Ron Ananian, The Car Doctor - January 24, 2026 - Hour 2 Ron Ananian The Car Doctor 20:03