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SKF 19831 nitrile shaft seal 2 x 2.75 x .313 in transparent finish

SKF

SKF 19831 CRW1 Nitrile Shaft Seal 2 x 2.75 x .313 in

SKU CH-TMVM-1633B

Nitrile rotary shaft seal with 2 in inside diameter, 2.75 in outside diameter and .313 in width, rated to 10 psi and 3,000 RPM for oils, greases and fuels

  • ColorTransparent
  • Width5/16"
  • Reliable sealing at up to 3,000 RPM
  • Nitrile lip resists oils, grease and gasoline
  • Acrylic-coated case protects against corrosion
  • Carbon-steel garter spring maintains lip pressure
  • Single-lip CRW1 design rated for 10 psi

Application Scope

The SKF 19831 CRW1 is a rotary shaft seal designed for equipment using inch-dimension shafts measuring 2 in. It suits maintenance or repair tasks where the housing bore accepts a 2.75 in outside diameter and the groove depth accommodates a .313 in overall width. The nitrile rubber lip handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils at pressures up to 10 psi and speeds up to 3,000 RPM.

Build Integration

The seal installs directly into the existing housing bore without adapters, freeing the assembler from sourcing metric-to-inch conversion parts. Its carbon-steel garter spring maintains lip tension across the stated speed range, while the acrylic case coating eases insertion and protects the bore surface during assembly. The single-lip contact design keeps the sealing interface simple for standard rotating shafts.

Included Components

The package supplies the seal only; no installation sleeve, lubricant or additional hardware is bundled. The acrylic coating on the metal case reduces the need for separate assembly grease during press-in, but the technician must still verify bore finish and shaft condition before fitting. No software, documentation or specialised tools accompany the unit.

Highlights

  • Reliable sealing at up to 3,000 RPM
  • Nitrile lip resists oils, grease and gasoline
  • Acrylic-coated case protects against corrosion
  • Carbon-steel garter spring maintains lip pressure
  • Single-lip CRW1 design rated for 10 psi

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

What maximum rotational speed does the seal handle before it becomes the limiting factor under sustained use?

The SKF 19831 CRW1 nitrile shaft seal is rated for a maximum rotational speed of 3,000 RPM and a maximum surface speed of 7.9 m/s, which defines its operational limit during continuous running.

How much heat does the nitrile lip generate when the shaft runs at 3,000 RPM all day?

At the rated 3,000 RPM and 7.9 m/s surface speed the nitrile lip operates within its design envelope, so heat generation stays at normal levels for this material and speed range.

What shaft diameter and bore size must already be present for this 2 in by 2.75 in seal to fit?

The seal requires a 2 in shaft diameter and a 2.75 in housing bore to match its inside and outside diameters for proper installation.

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