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Transparent nitrile rubber rotary shaft seal with carbon steel spring, 1.688 in inner diameter

SKF

SKF 16842 Rotary Shaft Seal 1.688 x 2.686 x .313 in CRW1

SKU CH-K7BN-HD33H

Rotary shaft seal with nitrile lip, 1.688 in ID × 2.686 in OD × .313 in wide, rated to 10 psi and 3,240 RPM

  • ColorTransparent
  • Width5/16"
  • Reliable sealing at up to 10 psi pressure
  • Compatible with gasoline, diesel, oils and greases
  • Handles shaft speeds up to 3,240 RPM
  • Nitrile rubber lip resists wear and heat
  • Precisely sized 1.688 in ID x 2.686 in OD

SKF 16842 Rotary Shaft Seal Dimensions

The SKF 16842 is a CRW1 design rotary shaft seal built for automotive engine service. It fits a 1.688 inch shaft and seats in a 2.686 inch bore with an overall width of .313 inch. Mechanics and rebuilders use it to retain lubricants and exclude contaminants in rotating assemblies.

Nitrile Lip and Carbon Steel Spring

The single nitrile rubber lip handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. A carbon steel garter spring maintains radial contact pressure against the shaft. The acrylic-coated case eases installation and resists corrosion in the housing bore.

Pressure and Speed Limits

Maximum operating pressure is 10 psi, so the seal suits only low-pressure splash or vented environments. Rotational speed must not exceed 3, 240 RPM or a surface speed of 7.21 mps. Exceeding either limit causes premature lip wear, heat build-up and leakage. Buyers needing high-pressure sealing or faster shaft speeds must select a different design.

Highlights

  • Reliable sealing at up to 10 psi pressure
  • Compatible with gasoline, diesel, oils and greases
  • Handles shaft speeds up to 3,240 RPM
  • Nitrile rubber lip resists wear and heat
  • Precisely sized 1.688 in ID x 2.686 in OD

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

When will the nitrile rubber lip need replacement?

The nitrile lip wears with shaft contact; inspect at each service interval and replace if leakage appears or the lip shows hardening or cracking.

What speed limit appears first during continuous rotation?

The seal is rated for 3,240 RPM maximum rotational speed; exceeding this limit risks lip overheating and premature failure.

How much heat builds up in the seal during all-day operation?

At the rated 7.21 m/s surface speed the lip generates frictional heat; ensure adequate lubrication and shaft cooling to keep temperatures within nitrile limits.

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