Ultimate Guide to National Oil Seals: Specifications, Cross-Reference, and Applications

National Oil Seals, produced by Federal-Mogul (now part of Tenneco), are a prominent brand known for their high-performance sealing solutions in automotive and industrial applications. This guide will explore the National Oil Seal catalog, specifications, cross-referencing methods, and their critical role in machinery and equipment maintenance.

What are National Oil Seals?

National Oil Seals are designed to keep lubricants in place and contaminants out of mechanical systems, ensuring smooth operations and extending the lifespan of components. These seals are commonly used in various applications, such as automotive axles, transmissions, engines, and industrial machinery.

National Oil Seal Cross Reference to SKF

National Oil Seals can be cross-referenced to other brands, such as SKF. This is important for mechanics and engineers who may need to substitute one brand for another. The National Oil Seal Cross Reference to SKF is readily available through online tools or the National Oil Seal Cross Reference Chart PDF, which provides a part number comparison for easy identification.

National Oil Seal Cross Reference Guide

The cross-reference guide is an invaluable tool when searching for equivalent oil seals across brands. The National Oil Seal Cross Reference by Part Number allows users to input the National Oil Seal part number to find the corresponding SKF, Timken, or other competitor brands.

National Oil Seal Catalog and Specifications

The National Oil Seal Catalog lists a wide range of seals, detailing their dimensions, material compositions, and application suitability. Customers can access the National Oil Seal Catalog PDF for a comprehensive list of seals by size, application, and specifications.

The catalog contains information on seals like the National Oil Seal 3604, National Oil Seal 37003A, and National Oil Seal 8835S, providing critical dimensions and installation guidance.

National Oil Seal Dimensions

National Oil Seals by Size are categorized by the shaft diameter, outer diameter, and width. This is particularly useful when selecting seals for specific applications, as different mechanical systems require seals with precise measurements. The National Oil Seal Dimensions Chart and National Oil Seal Size Chart make it easier to select the appropriate seal for any project.

National Oil Seal Lookup

Mechanics and engineers can also perform a National Oil Seal Lookup by size or part number. This is especially useful when you have limited information about a seal but need to identify its specifications or find an interchangeable product. The National Oil Seal Lookup by Size tool offers quick and easy access to product information.

National Oil Seal Installation Instructions

Proper installation is crucial to ensuring the performance of oil seals. The National Oil Seal Installation Instructions provide detailed steps for correct installation to avoid damage to the seal or the equipment. Following these instructions helps maintain the seal’s integrity and ensures a long service life.

National Oil Seal Interchange and Cross-Reference Online Tools

Many online tools simplify the process of finding cross-referenced seals from National Oil Seals to other brands like Timken or SKF. The National Oil Seal Cross Reference Online tools enable users to quickly locate equivalent seals based on their part numbers.

National Oil Seal Applications

National Oil Seals are versatile and used in various industrial and automotive applications. The National Oil Seal Application Guide lists seals according to their suitable applications, such as oil baths, wheel hubs, and differential axles. Some notable part numbers for specific applications include:

 

• • National Oil Seal 370150A

• • National Oil Seal 6815

National Oil Seals and Bearings

Many mechanical systems use both oil seals and bearings to function efficiently. National Oil Seals work in tandem with bearings to prevent oil leakage and contamination, ensuring smooth operation. National Oil Seals & Bearings are frequently referenced together in technical guides and catalogs, particularly in the National Oil Seals Master Interchange.

National Oil Seal Distributors and Online Catalog

Customers can purchase National Oil Seals through authorized distributors or consult the National Oil Seal Online Catalog to find specific parts. The online catalog offers search functionality by size, part number, and specifications, making it easier to find the right product for the job.

Federal-Mogul National Oil Seal Catalog

The Federal-Mogul National Oil Seal Catalog includes a comprehensive selection of National Oil Seals and details the product range with precise specifications. The Federal-Mogul Oil Seals Catalog is a trusted resource for those who need detailed product information, whether for replacement, maintenance, or new installations.

Popular National Oil Seals

Here are some of the most widely-used National Oil Seals by part number:

 

• • National Oil Seal 37003A

• • National Oil Seal 3604

• • National Oil Seal 8835S

These part numbers are essential in many automotive and industrial applications, highlighting the importance of having access to cross-reference guides and dimension charts.

Timken and National Oil Seals

In addition to SKF, many mechanics also cross-reference National Oil Seals with Timken products. The Timken National Oil Seal Catalog provides a way to find compatible seals across both brands, ensuring flexibility in sourcing parts.

Conclusion

National Oil Seals are critical components for the smooth functioning of many mechanical systems, from automotive engines to industrial machines. By utilizing tools like the National Oil Seal Cross Reference Chart, National Oil Seal Catalog, and online lookup services, users can easily find the right seal for their needs. Proper installation and maintenance, as guided by the National Oil Seal Installation Instructions, will ensure optimal performance and longevity for your machinery.

National oil seal cross reference

No.	SIZES	OEM
1	25.4*12.7*6.35	471442
2	25.4*14.29* 6.35	472705
3	28.54*12.7*6.35	471526
4	28.54*15.87*6.35	471466
5	28.55*17.475*6.35	471529
6	28.54*19.05*4.74	254270
7	31.75*17.44*6.35	471538
8	33.3*19.1*7.9	7013S
9	38.07*19.05*6.35	471567
10	38.1*23.83*6.35	471571
12	38.07*25.4*6.35	471224
13	39.65*25.4*6.35	471270
14	41.24*25.4*6.35	471649
15	41.24*28.57*6.35	471652
16	42.82*29.64*7.98	470328
18	44.5*25.4*6.35	471689
19	44.5*31.75*6.35	471413
20	44.5*19.05*7.92	471698
21	47.6*28.57*6.35	470712
22	47.6*31.75*6.35	471737
23	47.59*34.92*6.35	472354
24	47.59*38.1*6.35	343099
25	50.36*31.75*6.35	471750
26	50.9*31.75*6.35	471776
27	50.8*28.57*6.35	471763
28	50.8*31.75*6.35	471766
29	50.8*31.75*11.09	470163
30	50.8*34.93 * 7.93	472258
31	50.8*38.1*7.93	481163
32	53.97*31.75*6.35	471795
33	57.15*36.5*7.92	473016
34	57.15*44.45*9.11	450400
35	57.15*34.92*7.92	473214
36	58.2*35.5*11.7	8660S
37	60.33 * 38.1 * 0.312	470380
38	60.325*41.275*7.9	473231
39	60.33*44.45*7.93	473237
40	61.89*44.45*7.92	471504
41	63.55*38.1*7.92	473228
42	63.55*44.45*7.92	472164
43	63.55*41.27*7.92	473010
44	63.5*44.45*12.7	nationa
45	63.50*47.63* 9.53	482041N
46	63.5*50.8* 6.35	352541
47	66.68*50.8*7.92	471424
48	66.68*41.28*7.95	473232
49	69.85*44.45*7.93	472179
50	69.85*47.63*7.93	472572
51	69.85*50.8*7.92	472492
52	70.05*47.62*10.79	6712N
53	73.02*44.45*9.52	471141
54	73.02*53.97*9.52	470898
55	73.02*50.8*7.92	472924
56	76.2*57.15*9.52	471272
57	76.2*57.15*11.11	471341
58	76.2*60.33*9.53	473573
59	76.2*50.8*7.92	472397
60	79.98*53.97*9.52	476535
61	79.38*60.33*9.53	470565
62	82.55 *57.15 *  9.53	472636
63	82.55 * 57.15 * 12.7	410316
64	82.55 * 60.33 * 9.53	413246N
65	82.55 *  63.5  * 9.53	471271
66	82.55 *  63.5  *12.7	410519
67	82.55 *66.68 * 11	411143N
68	82.57 * 50.8* 11.09	412027
69	85.62 *57.15 *  9.53	412920
70	85.09*60.32*9.52	412119
71	88.9*63.5*9.52	415449
72	88.9*53.97*9.52	416267
73	88.9  * 57.15 * 9.53	411376
74	88.9 * 60.33 * 9.53	416271
75	88.9 * 66.68 * 9.53	415483
76	92.02*66.67*9.52	415458
77	95.27*69.85*12.7	415004
78	95.25*69.85*9.53	417316
79	95.25* 73.03*9.53	417344
80	95.27*63.5*12.7	455079
81	98.43*76.2 * 11	417350
82	98.4*73*12.7	370150BGO
83	101.6 *76.2*9.53	415995
84	101.6*76.2 *11	415836
85	101.6*79.38* 9.53	416404
86	101.6*79.38*12.7	nationa
87	101.6*82.55*12.7	nationa
88	101.6*82.55*9.53	417433
89	101.6*69.85*9.53	416706
90	107.92*82.55*12.7	415304
91	107.92*82.55*9.52	476470
92	107.9*76.2 *11	417487
93	107.9*79.38 *12.7	416288
94	107.9*85.73 *12.7	416294
95	111.1*82.55 *12.7	417181
96	111.1*88.9 *12.7	416624
97	111.1*92.08*9.53	417698
98	111.15*76.2* 12.7	417488
99	114.32*88.9*11.88	415991
100	114.32*87.29*9.52	417492
101	114.3*82.55*9.53	418028
102	114.3*84.12 *11.9	415085
103	114.3*79.38*12.7	417172
104	114.3*95.25*11.9	415983N
105	120.7*88.90*12.7	415437
106	120.7*95.25*12.7	415379
107	127*101.6*11.9	415035
108	127*101.6 *8	456967 V
109	127*95.25 *12.7	416339
110	127*98.43*12.7	416345
111	127*79.38*11.89	415021
112	127*88.90*11.9	415027
113	127*104.8*11.9	455134
114	127*95.25*11.88	455031
115	130.2*101.6*12.7	417356
116	133.4*98.43*12.7	417366
117	133.4*107.9 *12.7	national
118	133.35*101.6* 12.7	417357
119	136.55*101.6*12.4	416130
120	139.7* 101.6 *14.3	415036
121	139.7*114.3 *12.7	416888
122	142.87* 114.3* 12.7	416153
123	146.1*117.5*12.7	415371
124	146.1*120.7*12.7	415138
125	152.42*127*12.7	415725
126	152.37*101.6*12.7	417509
127	152.4*125.4 *12.7	417539
128	158.75*127*12.7	416865
129	158.75*114.3**12.7	415351
130	158.8*123.8*12.7	417269
131	162.10*130.17*12.7	417546
132	165.1*133.4*14.3	415645
133	165.27*133.35*15.87	455104
134	165*127*12.7	417541
135	165.1*139.7*14.3	417254
136	168.24*136.52*14.27	415938
137	171.45*152.4*12.7	nationa
138	171.45*139.7*14.6	416107
139	177.82*146.05*14.27	416666
140	177.8*152.4 *12.7	415683
141	180.97*155.57*15.8	455330
142	190.5 *146.05*14.27	416039
143	190.5*155.85*14.27	415074
144	190.5*158.8*15.88	455480
145	190.5*165.1*14.28	415294
146	190.5*152.4*14.27	415072
147	196.9 *158.8 *  12.7	417562
148	200.02*161.92* 12.7	417563
149	203.2*177.8*15.87	416364
150	203.2 * 165.1 *15.9	416229
151	203.2 * 171.45 * 15.88	415327
152	215.9*190.5*15.87	415867
153	219.25*180.97*14.27	416077
154	228.6*190.5*19.05	415551
155	123*88.39*23.5	370001
156	144.5 * 98.4* 22.22	370023A
157	146.1*114.3*24.4	370022
158	152.6*108*25.4	370065A
159	152.4*117.5*21.3	370025
160	158.8*108*30.2	370031A
161	160.3*121*27.4	370003A
162	184.2*139.7*30.1	370120
163	133.4*99.8*15.6	370087