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National Oil Seal

KDIK is specialized in producing National Oil Seal, our products are very popular, if you are interested in our products, please contact us as soon as possible.

Product Description

Product Description

Oil seals are often called dirt, fluid, or grease seals, and they serve to close spaces between stationary and moving components within mechanical machinery. They are designed to prevent the escape of lubricant necessary for proper function. They also serve to keep various contaminants from entering machinery. Oil seals are used wherever shafts rotate and bearings require lubrication to work effectively. 

 

KDIK's National Oil Seal line of O-ring seal boast the coverage necessary for the gamut of popular applications. These handy oil seals serve to close spaces between stationary and moving components in mechanical equipment, also helping to prevent lubricant from escaping the system. They also serve to block harmful contaminants from entering machinery, especially within severe environments. National Oil Seals are great for thousands of applications across many different industries like automotive, manufacturing, power transmission, and more. 

 

If you have any question on national oil seal, please feel free to contact us.

 

Advantages of National Oil Seal:

 

1.Rugged Durability: Oversized double-walled metal outer diameter helps prevent the seal from spinning or walking out of the hub bore (includes

black bore sealant).Heavy-duty construction enables effective heat transfer away from the sealing lip.

2. Extended Seal Life: Corrosion-proof spacers feature multiple vent holes,enabling the free flow of lubricant to the sealing lip to help extend service

life.

3. Innovative Protection: Unique contamination exclusion system utilizing three nitrile (NBR) lip contact barrier points helps prevent seal lip damage

and provides protection across a broad temperature range (-20ºF to 225ºF [-29ºC to 107ºC]).

4. Impressive Sealing: Wide shoulder coverage provides protection on worn or damaged axle shoulders.

5. Stronger Value: Meets or exceeds the performance of major industry competitors.

6. Simplified Installation: Steer, drive and trailer axle seals are available with tools designed to simplify accurate installation.

 

Truck Wheel Hub Oil Seal.jpg

CR National Oil Seal 370182A

 

Product Parameter

 

Master Wheel Seal Cross Reference
Scotseal Classic Scotseal Plus XL Scotseal Pro National Red National Gold Grit-Guard Guardian Voyager Discovery Meritor Standard Meritor Premium Conmet
35066 35058 35058PRO 370001A 380001A 382-8036 308-0836 3883-0136 383-0236 MER0136 MER0236 10045885
38780 38776 38776PRO 370023A 380023A 392-9099 309-0912 393-0112 393-0212 MER0112 MER0212  
40136 40129 40129PRO 370036A 380036A 372-7098 307-0713 373-0113 373-0213 MER0113 MER0213  
42623 42627 42627PRO 370065A 380065A 372-7099 307-0723 373-0123 373-0223 MER0123 MER0223 10045889
43764 43761 43761PRO 370048A 380048A 382-8064 308-0864 383-0164 383-0264 MER0164 MER0264 10045883
46305 46300 46300PRO 370025A 380025A 372-7097 307-0743 373-0143 373-0243 MER0143 MER0243 10045888
47697 47691 47691PRO 370003A 380003A 392-9131 309-0973 393-0173 393-0273 MER0173 MER0273 10045887
28758 28759   370150A   382-8066 308-0866 383-0166        

National Oil Seals Red 37 Series

Part Name SIZE " OEM
National Oil Seal 3.5 4.842 0.925 370001A
National Oil Seal 3.5 5 1 370002A
National Oil Seal 4.765 6.311 1.078 370003A
National Oil Seal 4.812 6.5 0.865 370004A
National Oil Seal 4.765 6.251 0.605 370005A
National Oil Seal 4.765 6.999 1.25 370006A
National Oil Seal 4.875 6.373 0.921 370007A
National Oil Seal 3.937 5.372 1.015 370008A
National Oil Seal 3.937 5.501 0.937 370009A
National Oil Seal 2.875 4.125 0.842 370010A
National Oil Seal 3.625 5 0.875 370011A
National Oil Seal 3.625 4.81 0.921 370012A
National Oil Seal 3.312 5 0.937 370013A
National Oil Seal 3.125 4.5 0.605 370014A
National Oil Seal 4 5.375 1 370015A
National Oil Seal 3.25 4.5 0.605 370018A
National Oil Seal 4.375 6.251 0.605 370019A
National Oil Seal 4.5 6 0.984 370020A
National Oil Seal 4.5 6.251 0.61 370021A
National Oil Seal 4.5 5.75 0.96 370022A
National Oil Seal 3.875 5.69 0.875 370023A
National Oil Seal 3.875 5.501 0.875 370024A
National Oil Seal 4.625 5.999 0.84 370025A
National Oil Seal 4.635 6.007 0.937 370026A
National Oil Seal 4.812 6.311 1.062 370027A
National Oil Seal 5 6.25 1.375 370028A
National Oil Seal 3.187 5 0.765 370029A
National Oil Seal 4.265 6.064 0.605 370030A
National Oil Seal 4.25 6.25 1.188 370031A
National Oil Seal 3.875 5.126 0.605 370033A
National Oil Seal 4.375 6.311 1.09 370034A
National Oil Seal 4 5.757 0.93 370036A
National Oil Seal 4.375 5.757 1 370037A
National Oil Seal 5 7.437 0.605 370038A
National Oil Seal 5.5 7.125 1.187 370043A
National Oil Seal 3.125 4.625 0.605 370046A
National Oil Seal 3.437 4.755 0.605 370047A
National Oil Seal 4.375 5.905 1 370048A
National Oil Seal 4.625 6.622 1.093 370051A
National Oil Seal 2.875 4.175 0.822 370054A
National Oil Seal 4.875 6.437 0.921 370057A
National Oil Seal 5 6.25 0.605 370063A
National Oil Seal 5.625 7.186 0.906 370064A
National Oil Seal 4.25 6.008 1 370065A
National Oil Seal 4 5.626 0.605 370066A
National Oil Seal 5.25 7.375 1 370069A
National Oil Seal 4.5 6.622 1.093 370078A
National Oil Seal 4.5 6.31 1.175 370086A
National Oil Seal 4.125 5.375 0.605 370094A
National Oil Seal 4.166 5.5 0.605 370106A
National Oil Seal 4.25 6.035 0.915 370107A
National Oil Seal 4.875 6.622 1 370109A
National Oil Seal 5.64 7.501 0.605 370119A
National Oil Seal 5.5 7.25 1.187 370120A
National Oil Seal 4.875 6.5 1 370121A
National Oil Seal 4.5 5.374 0.984 370124A
National Oil Seal 4.5 5.876 0.984 370131A
National Oil Seal 3.5 4.543 0.788 370132A
National Oil Seal 3.125 4.174 0.5 370145A
National Oil Seal 2.875 3.875 0.5 370150A
National Oil Seal 3.875 5.376 0.985 370165A
National Oil Seal 5 6.622 1.093 370166A
National Oil Seal 3.5 4.751 0.605 370169A
National Oil Seal 4.765 6.25 1.05 370173A
National Oil Seal 7.25 8.75 0.605 370175A
National Oil Seal 4.5 5.5 0.675 370178A
National Oil Seal 3.5 4.45 0.843 370179A
National Oil Seal 4.765 5.999 1.031 370181A
National Oil Seal 4.375 5.905 1 370182A
National Oil Seal 3.312 4.501 0.605 370191A
National Oil Seal 4.5 6.441 0.937 370192A
National Oil Seal 4.875 6.001 0.625 370195A
National Oil Seal 4.04 5.122 0.945 370198A
National Oil Seal 2.948 4.725 0.526 370211A
National Oil Seal 4.625 5.999 0.89 370216A
National Oil Seal 2.25 3.372 0.475 370219A
National Oil Seal 4.375 5.757 0.6 370338A
National Oil Seal 4 5.757 0.6 370349A
National Oil Seal 2.75 3.779 0.767 370352A
National Oil Seal 4.25 6.048 0.68 376590A

Get a quote.

 

FAQ

 

What is the purpose of an oil seal?

An oil seal has three main functions– to prevent lubricants from leaking outside the seal even under high pressure, to serve as a barrier to retain lubrication material, and to prevent dirt and contaminants from entering the unit.

 

What types of oil seals are there?

There are many different types of oil seals including single and double lip, rubber or polymer, metal cased, spring loaded, and internal, external, and axial oriented.

 

What are the benefits of nitrile rubber oil seals

Oil seals made from nitrile rubber offer good heat resistance properties, and are also resistant to salt solutions, oils, hydraulic oils, and gasoline They also operate well in dry environments for intermittent periods.


How is an oil seal constructed? 

Oil seals generally consist of three basic components including the sealing element, the metal casing, and the garter spring.

 

Why do oil seals fail?

Severe cold can crack seals and cause them to fail. Other seals such as brake, transmission, and axle seals can be damaged due to extreme temperatures as well. Dirt and contaminants can also cause seals to slowly break down over time allowing for leaks and eventual failure.

Contact us to get a custom national oil seal.

Related Products:
National Oil Seal
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