This little ring—it's usually rubber or a similar material—creates a watertight seal between the thermostat housing and the thermostat itself. Basically, it prevents coolant from leaking out where the thermostat sits. It doesn't do a lot actively, but it’s crucial for keeping everything sealed up. Think of your cooling system as a closed loop. Coolant circulates to keep the engine from overheating. The thermostat controls that flow, opening and closing to regulate temperature. This seal ring is right there at a key connection point. It ensures that coolant stays inside the system where it needs to be, and doesn't end up all over your engine. It’s positioned right where the thermostat seats itself in the housing. Without a good seal, you'll lose coolant. That can lead to overheating, which is a big problem. You’ll notice if you have a leak – usually as a sweet smelling puddle under the car, or the temperature gauge climbing higher than normal. Replacing this seal ring whenever you change the thermostat is cheap insurance. They can get brittle and cracked over time, even if they don’t look bad. You can find these pretty easily online; a place like Fixparts Online carries a good selection. It's a small part, but it makes a big difference in keeping your engine running cool and preventing a much larger, more expensive repair down the line. Elring stands behind its products: Seal Ring (MPN 927.770) has a 12-month warranty!

About Elring

Elring is a leading provider of gaskets, sealing compounds, and cylinder-head systems, ensuring leak-proof performance for modern engines.

Why Choose Elring?

• Elring parts are known for lasting a long time, saving you money on repairs down the road. • We make a huge range of parts, so you can likely find everything you need from one trusted brand. • Elring parts are designed to meet or beat the quality of original equipment, ensuring a good fit and reliable performance. • Mechanics and DIYers alike trust Elring for dependable sealing solutions and engine parts. Elring delivers excellence, FixParts Online delivers to your door.