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National Oil Seal 3638 Manual Transmission Input Shaft Seal

(Ford F-150 1975-90, Mustang 1965-73, 1979-96, F-250 1965-90, Bronco 1966-90, Taurus 1986-95, F-350 1965-80, 1982-85, Maverick 1969-77 + 240 more models)

Manufacturer

Picture for manufacturer National Oil Seal

Part Number

3638
9 reviews
Sale Price

$10.63

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The National Oil Seal 3638 is a premium quality manual transmission input shaft seal designed to provide reliable sealing performance in demanding automotive applications. This spring-loaded, single-lip oil seal features a steel case construction and is engineered to deliver consistent performance across a wide range of operating conditions.

Key Specifications:

  • Shaft Diameter: 1.125 inches (28.58mm)
  • Outside Diameter: 1.628 inches (41.35mm)
  • Seal Width: 0.190 inches (4.83mm)
  • Housing Bore: 1.624 inches (41.25mm)
  • Design Type: 48 Series, single lip with spring
  • Lip Material: Polyacrylate (ACM)
  • Temperature Range: -20°F to 300°F (-29°C to 149°C)
  • Maximum Surface Speed: 3000 feet per minute
  • Maximum Pressure: 7 PSI

Features and Benefits:

  • Spring-loaded single-lip design ensures consistent sealing pressure
  • Polyacrylate lip material provides excellent resistance to extreme pressure lubricants
  • Low swell characteristics in hydrocarbon fluids
  • Counter-clockwise spiral lip design for enhanced sealing
  • Steel case construction without inner case for compact installation
  • Redicoat surface treatment for improved corrosion resistance

National Oil Seals has over 75 years of experience manufacturing premium sealing solutions for automotive applications. This seal is designed for general purpose use in manual transmissions and delivers the quality and reliability expected from the National brand.

Interchange Part Numbers: 11111, 11122, 48061, 376761, J50116103, 45820, 2603865, KS11122, P3638, TCS 45495, WS3638

Products specifications

Fits

Ford F-150 1975-90, Mustang 1965-73, 1979-96, F-250 1965-90, Bronco 1966-90, Taurus 1986-95, F-350 1965-80, 1982-85, Maverick 1969-77, Galaxie 500 1965-73, F-100 1965-83, F-250 Pickup 1965-74, Fairlane 1965-70, Ranchero 1965-74 + 235 more models

Agricultural Equipment

N

Application Specific

Y

Car Light Truck

N

Engine Specific

N

Freight Class

60

Heavy Duty Truck

N

High Performance

Y

Industrial Off Highway Equipment

N

Marine

N

Medium Duty Truck

N

Motorcycle ATV

N

Non Vehicle Specific

N

Personal WaterCraft

N

Small Engine

N

SnowMobile

N

Transmission Specific

N

Feature 2

Design Type: Spring Loaded; Single-Lip

Feature 3

Compatible with most oils and EP lubricants at higher operating temperatures

Feature 4

High resistance to oxidation and ozone and has low swell in hydrocarbon fluids

Feature 5

Temperature Range: -20F to 300F; -29C to `49C

Footnote

Clockwise-Spiral Lip Design

Material

Acrylates

Outside Diameter (mm)

41.350

Part Description

Oil Seal

Part Type

Seals

Series

03000

Type

48

Width (inch)

0.185

WIDTH (MM)

4.830

Housing Bore (MM)

41.250

Redicoat

Yes

Shaft (Inch)

1.125

Shaft (MM)

28.580

Shaft Size (Inch)

1.125

Amazing prices, cheapest I could find anywhere. Only down side is the shipping is more than it should be.

Very happy with my purchase and product from Autoplicity! Highly recommend.

I was looking for KC lights for my jeep, not only CI they have just the ones I was looking for, they were half the price of any local auto shop! Shipping costs were very low to. Thanks!

Very easy mobile site!

Great product and half the price of any one else I've shopped would recommend this to everyone.

Autoplicity had a MSD Timing Twister that was discontinued and no one had in stock. I called 6 places before getting in touch with them. Ordered part and had it in a matter of days.

autoplicity has the lowest price and fast service .I will definitely use autoplicity for my next auto parts purchase

At first I did not expect Autoplicity to even carry this part, but in fact they did. Placed the order and I received the part quickly. They were the cheapest for the part after searching nearly everywhere. Will order from them again.<br>Order #8334

Great prices and very quick shipping! Thanks

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