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SKF 14857 rotary shaft seal, translucent nitrile rubber ring 1.5 by 2 by .25 in

SKF

SKF 14857 Shaft Seal 1.5 x 2 x .25 in HM14 Nitrile Rubber

SKU CH-EZBV-WQF9X

Rotary shaft seal for grease-lubricated agricultural machinery, 1.5 in inner diameter, 2 in outer diameter, .25 in width, nitrile rubber lip, 10 psi max pressure, 3,379 RPM limit

  • ColorTransparent
  • HM14 design suits grease-lubricated agricultural machinery
  • Nitrile rubber lip handles diesel, gasoline, greases, oils and hot water
  • 5 in inside diameter by 2 in outside diameter fits standard shafts
  • 10 psi maximum pressure rating for low-pressure sealing
  • Single lip rated up to 3,379 RPM rotational speed

SKF 14857 Shaft Seal Specifications

This SKF 14857 rotary shaft seal uses an HM14 design code with a single nitrile rubber lip. It measures 1.5 in inside diameter, 2 in outside diameter and .25 in overall width. The seal suits grease-lubricated agricultural machinery and handles fluids including animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Maximum rotational speed is 3,379 RPM and maximum pressure is 10 psi.

When to Replace a Shaft Seal

Replace the seal when leakage appears at the shaft or when scheduled maintenance calls for fresh sealing components. The jump is worth it if the current seal shows lip wear, hardening or spring fatigue that lets fluid escape. A new nitrile rubber lip restores the barrier against the listed fluids and keeps contaminants out of the bearing cavity.

Build Fit and Requirements

The seal installs directly into a housing bored for a 2 in outside diameter and a shaft of 1.5 in. No case coating means the metal outer surface seats against the bore without additional treatment. The design needs no separate spring, so assembly is a single press-fit operation. Ensure the shaft surface finish and chamfer match the manufacturer's guidelines for the HM14 profile.

Highlights

  • HM14 design suits grease-lubricated agricultural machinery
  • Nitrile rubber lip handles diesel, gasoline, greases, oils and hot water
  • 5 in inside diameter by 2 in outside diameter fits standard shafts
  • 10 psi maximum pressure rating for low-pressure sealing
  • Single lip rated up to 3,379 RPM rotational speed

Specifications

BrandSKF
ColorTransparent

Questions about this item

What bore diameter does the 1.5 in inside diameter seal require for proper fit?

The seal needs a 2 in bore to match its outside diameter, with the housing machined to a smooth finish for the nitrile rubber lip to seat correctly.

Which direction does the spring side face when installing the HM14 design code seal?

The single lip with its garter spring must face the fluid side so pressure energises the seal; pressing it in backwards is the common error that causes immediate leakage.

How often should the nitrile rubber lip be inspected on agricultural machinery running at 3,379 RPM?

Check the lip for hardening or wear at every scheduled oil change; nitrile degrades faster with hot water or animal-vegetable oil exposure, so replace the seal at the first sign of cracking.

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