Which Way Do Wheel Bearing Seals Go in? Check This out – Which Way Do Bearing Seals Go

Installation. A seal must always be installed so that the sealing lip is facing the fluid to be sealed. This is because the lip is made so that pressure applied to it from the “wet” side of the seal will tend to increase the pressure the lip applies to the shaft.

Which way does the trailer bearing seal go?

Expert Reply: When replacing a grease seal, the metal part of the seal will face towards the inside of the trailer and the rubber part of the seal will face toward the back side of the wheel. The air side of the seal is the flat side of the seal and faces out when it is installed in the hub.

Does the lip of an oil seal face toward or away from the oil in the crankcase?

For oil, the lip should face inward along the shaft to hold in the oil. For greased bearings, the lip usually faces outward to allow the grease to purge.

Is a wheel seal the same as an axle seal?

The axle shaft is sealed with silicone RTV when it is bolted into the hub. The hub has a wheel seal to protect the bearings. The wheel seal is installed on the back side of the hub.

How do wheel seals work?

Wheel seals are designed to keep your wheel bearing lubricant within the wheel end, and keep all debris, dirt, and other contaminants out while on the road. They can be installed directly into the hub or onto the spindle with dedicated installation tools, dependent upon the seal.

Do you grease axle seals?

To begin the seal installation, an important step is to pre-lubricate the seal with the oil or grease you are going to seal. It also prevents a dry starting condition that can tear the seal material during initial run-in periods.

Which way does a double lip seal go?

The sealing lip should face the lubricant that requires sealing. The second lip on a double lip oil seal is intended as a dust lip. The seal must be installed at a 90°, or perpendicularly, to both the shaft and housing bore.

Are oil seals directional?

Oil seals, also known as metal-clad seals, are directional. If you install one incorrectly, oil will bypass the seal. Some seals have a garter spring behind their sealing area. This spring keeps tension on the sealing surface to keep it tightly against the output shaft.