Possible Replacement Grease Seal Recommendation for National 203025

Question

Question:

Hello, Trying to figure out the correct seals for my boat trailer. The seal that is on there currently is a National 203025 which seems to not be for boat trailers. Do you have a double lip seal that matches that one? The bearings and races are: L44649/L44610 Thank you.

asked by: Andrew R

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Expert Reply:

It sounds like the # 34823 would be close enough as a fit as it has an outer diameter of 1.983 and an inner diameter of 1.249 but your best option would be to measure the outer diameter of the spindle where the seal rides to get the exact figure.

expert reply by: Jameson C

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Answer 1

Based on the number 471750 that you gave the correct replacement grease seal will be the part #34823. This seal has an inner diameter of 1.25 inch and an outer diameter of 1.983 inch.

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Answer 2

According to my research, the National Seal 203025 has a 1.218" inner diameter and a 1.983" outer diameter. Unfortunately, we do not have a grease seal that matches these dimensions exactly. The closest grease seal we have to the above…

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Answer 3

We've got one that is close enough I am more than confident it will fit. It is the Double Lip Grease Seal item #34823 you were looking at. It has a 1.249" inside diameter and 1.983" outside diameter. The few thousandths of an inch this…

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Answer 4

I did some research and found that the 12194TC seal you said you have measures 1.250 inside diameter, and 1.979 outside diameter. The seal I recommend is part #34823. The dimensions listed for this seal are 1.249 inside diameter and 1.983 outside…

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Answer 5

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 8

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 9

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 10

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 11

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 12

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Possible Replacement Grease Seal Recommendation for National 203025

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