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Circular rubber shaft seal with metal spring, translucent finish

SKF

SKF 16245 Shaft Seal 1.625 x 2.502 x .313 in CRW1 NBR

SKU CH-XEM6-5A6DZ

Rotary shaft seal with 1.625 in inside diameter, 2.502 in outside diameter, .313 in width, NBR lip, and 3,240 RPM maximum speed

  • ColorTransparent
  • Width5/16"
  • Seals shafts against leaks with nitrile rubber lip
  • Handles oils, fuels and greases up to 10 psi pressure
  • Withstands speeds to 3,240 RPM and 7.06 m/s surface velocity
  • Fits 1.625 in bore and 2.502 in housing with .313 in width
  • Carbon-steel spring maintains lip contact for consistent sealing

Shaft Seal for 1.625 in Shafts

The SKF 16245 rotary shaft seal fits a 1.625 inch inside diameter and a 2.502 inch outside diameter. It uses a CRW1 design with a single nitrile rubber lip and a carbon steel spring. The case features an acrylic coating and the overall width measures .313 inch.

Nitrile Lip Handles Common Fluids

The nitrile rubber lip material suits animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Maximum pressure is rated at 10 psi while the maximum rotational speed reaches 3 240 RPM and maximum surface speed is 7.06 mps. These limits define the operating envelope for the seal.

Suits Rotary Sealing on Compatible Shafts

This seal serves maintenance and repair tasks where a 1.625 inch shaft requires a CRW1 profile within the stated speed and pressure range. It is not for applications exceeding 10 psi or 3 240 RPM, nor for shaft diameters or fluid types outside the listed specifications.

Highlights

  • Seals shafts against leaks with nitrile rubber lip
  • Handles oils, fuels and greases up to 10 psi pressure
  • Withstands speeds to 3,240 RPM and 7.06 m/s surface velocity
  • Fits 1.625 in bore and 2.502 in housing with .313 in width
  • Carbon-steel spring maintains lip contact for consistent sealing

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

How often will the single nitrile rubber lip need replacement under normal service?

The single NBR lip is rated for up to 3,240 RPM and 7.06 m/s surface speed; replacement interval depends on shaft condition, fluid contamination and operating temperature rather than a fixed schedule.

What is the first limit reached during continuous high-speed operation?

The 3,240 RPM maximum rotational speed and 7.06 m/s surface speed are the primary design limits; exceeding either accelerates lip wear and leakage.

How much heat does the seal generate when running all day at rated speed?

At 3,240 RPM the lip-to-shaft friction produces modest heat within the 10 psi pressure rating; adequate lubrication and shaft finish keep temperatures in the normal NBR operating range.

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