The Difference of Single Lip And Double Lip Grease Seals

Question

Question:

diagram of single vs double seal cross section would be handy to see.

asked by: Matt S

0

Expert Reply:

The difference between the single lip and double lip seals is that the double lip grease seal will have two rubber lips that are in contact with the spindle. The double lip grease seals are usually used in marine applications to give a better seal and protect the bearings from the water, which can cause damage to them.

The best way to determine what grease seals are needed for your spindle is to get the part numbers from the inner and outer bearings from that spindle. If you have the bearing part numbers, then I can help you get the correct single lip or double lip grease seal that you will need.

See the picture to the right that will show the cross section of both the single lip and double lip grease seals.

expert reply by: Jeff D

0

click to enlarge

Answer 1

Hey Dave, what you gave me is enough info to get you replacement bearings. The grease seal 471750 matches the part #TMK48ZR. For a Timken replacement for the L44610 part number you'd need #TMK63VR. Then for a bearing for the L44649…

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Answer 2

The difference between the single lip and double lip seals is that the double lip grease seal will have two rubber lips that are in contact with the spindle. The double lip grease seals are usually used in marine applications to give a better seal…

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Answer 3

It is possible to over-fill a hub that has a Bearing Buddy bearing protector such as #BB1781. The convenience of easy filling through the zerk fitting can often mean we can be tempted to keep adding more grease. ("If a little is good, then more…

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Answer 4

When you measure with a caliper, use the inner and outer diametes to help you find the right seal. On TruRyde's Double Lip Grease Seal, #34823, we give you measurements that are extremely close to what you sent in your question. The very slight…

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Answer 5

After you've packed the bearings and assembled everything, carefully slide the hub assembly onto the spindle and install the outer bearing. Install the spindle and tang washer and run the spindle nut down finger tight, then rotate the hub back…

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Answer 6

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 7

The Master Cylinder for Model 6 Drum Brake Actuators part #T1027100 has very few replaceable components therefore a rebuild kit is not available. If you are looking to rebuild the entire actuator then I recommend using the Replacement Master Cylinder…

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Answer 8

Out of the available options it does appear that the Model 6 actuator's master cylinders, #T1027100 or #T1777401, are the best and pretty much only options for you. On your master cylinder that additional fitting could be a port for a reverse…

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Answer 9

The best way to determine the correct grease seals for your triple axle trailer would be to take a few precise measurements. I recommend using a set of digital dial calipers to obtain these measurements. You will need to measure the grease seal…

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Answer 10

Usually when you replace parts that get lubricated, you clean all of the existing grease first before adding any new grease, just in case there is a compatibility issue. Since you are using Dexter axles and replacing components with Dexter parts, the…

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Answer 11

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 12

A double lip seal is an upgrade over the single lip that uses a reinforcing spring behind the lip that does a better job of retaining the grease inside the hub and excluding water and road grime. It is perfectly acceptable to use a double lip seal…

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The Difference of Single Lip And Double Lip Grease Seals

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