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Transparent rubber shaft seal ring 1.438 x 2.25 x .25 in

SKF

SKF 14257 Shaft Seal 1.438 x 2.25 x .25 in HM14 NBR

SKU CH-SVEH-236Q5

Rotary shaft seal for grease-lubricated agricultural machinery, 1.438 in inside diameter, 2.25 in outside diameter, .25 in width, NBR lip, 10 psi maximum pressure, 3 430 RPM limit

  • ColorTransparent
  • Width1/4"
  • Reliable sealing for grease-lubricated machinery with NBR lip material
  • Handles animal and vegetable oils, diesel, gasoline and greases
  • Maximum rotational speed 3,430 RPM for high-speed shafts
  • Maximum pressure 10 psi suits low-pressure applications
  • Single-lip HM14 design with 1.438 in inside diameter

SKF 14257 Shaft Seal for Grease-Lubricated Machinery

This SKF 14257 rotary shaft seal uses an HM14 design with a single nitrile rubber lip. It fits a 1.438 in shaft and a 2.25 in bore with a .25 in overall width. The seal handles grease-lubricated agricultural machinery and compatible fluids including diesel, gasoline, mineral oils, greases, animal and vegetable oils, and hot water.

Verify Shaft Diameter Bore Size and Operating Limits

Confirm the shaft measures 1.438 in and the housing bore measures 2.25 in before ordering. The seal is rated for a maximum pressure of 10 psi and a maximum rotational speed of 430 RPM. It has no spring and an uncoated case, so ensure the application matches these contact-seal specifications and the fluid compatibility list.

Suits Agricultural Equipment Maintainers

This seal suits technicians servicing grease-lubricated farm equipment or hydraulic components using approved fluids. It is not for buyers who need a spring-loaded lip, higher pressure capability, faster shaft speeds, or a different inside diameter, outside diameter, or width.

Highlights

  • Reliable sealing for grease-lubricated machinery with NBR lip material
  • Handles animal and vegetable oils, diesel, gasoline and greases
  • Maximum rotational speed 3,430 RPM for high-speed shafts
  • Maximum pressure 10 psi suits low-pressure applications
  • Single-lip HM14 design with 1.438 in inside diameter

Specifications

BrandSKF
ColorTransparent
Width1/4"

Questions about this item

Does the SKF 14257 shaft seal come alone or with any installation hardware?

The SKF 14257 shaft seal is supplied as a single rotary shaft seal. No installation hardware, tools, or additional components are included in the package.

How do I confirm the 1.438 in inside diameter and 2.25 in outside diameter match my shaft and housing?

Measure the shaft diameter at the sealing point and the housing bore diameter. The seal requires a 1.438 in shaft and a 2.25 in bore for correct fit and sealing performance.

What does the 3,430 RPM maximum speed mean for my grease-lubricated agricultural machine?

The 3,430 RPM limit is the maximum rotational speed for the NBR lip material in grease-lubricated agricultural machinery applications. Exceeding this speed can cause lip overheating and premature failure.

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