SKF 19993 Shaft Seal CRWA1 Nitrile Rubber
Rotary shaft seal with 2 in inside diameter, 3 in outside diameter, 0.313 in width, nitrile rubber lips, carbon steel spring, rated to 10 psi, 3,000 RPM, 7.9 mps surface speed and 100 °C
- Product colorTransparent
- Overall width5/16 in
- CRWA1 design handles 3,000 RPM shaft speeds
- Nitrile rubber lip resists oils, fuels and greases
- Dual-lip seal with carbon-steel spring maintains contact
- Acrylic-coated case protects against corrosion
- Operates up to 100 °C and 10 psi pressure
SKF 19993 Rotary Shaft Seal
The SKF 19993 is a CRWA1-design rotary shaft seal built for sealing rotating shafts in automotive and industrial equipment. It has a 2-inch inside diameter, a 3-inch outside diameter and an overall width of 0.313 inch. Twin lips made from nitrile rubber and a carbon-steel spring maintain contact pressure against the shaft. The case carries an acrylic coating and the unit is rated for 10 psi maximum pressure, 3,000 RPM and 100 degrees Celsius.
Mechanics working with compatible fluids and shaft
This seal suits workshops and maintenance teams that need a replacement for a 2-inch shaft running in mineral oils, diesel, gasoline, greases, animal or vegetable oils, light heating oil or hot water. It is not for applications exceeding 3,000 RPM, 7.9 m/s surface speed, 10 psi pressure or 100 degrees Celsius. Buyers who need a different shaft diameter, a higher pressure rating, a single-lip design or a fluorocarbon lip material should look at other sealing options.
CRWA1 design with twin nitrile lips
The deciding specification is the CRWA1 design code, which defines a double-lip, spring-loaded seal with an acrylic-coated case and nitrile rubber lips. This construction determines the fluid compatibility, the 10 psi pressure limit, the 3,000 RPM speed ceiling and the 100 degrees Celsius temperature maximum. If the machine requires a different design code, lip count or lip material, this part will not fit the application.
How it compares
Measured against everything we stock in Interior Cleaning Brushes & Cloths, at today’s prices. Recalculated every night.
- Price $8.99
- Cheaper than about 90% of the 541 comparable items (median $15.99).
Specifications
| Product | |
|---|---|
| Brand name | SKF |
| Product color | Transparent |
| Size & build | |
| Overall width | 5/16 in |
Questions about this item
How much heat does the 19993 shaft seal generate when running continuously at 3,000 RPM?
The seal is rated for a maximum temperature of 100 degrees C and a surface speed of 7.9 mps; heat output depends on the application and lubrication, not the seal alone.
What shaft diameter and housing bore does the 19993 seal require for installation?
The seal fits a 2-inch inside diameter shaft and a 3-inch outside diameter housing bore with a 0.313-inch overall width.
Will the nitrile rubber lips on the 19993 seal withstand contact with older mineral-oil lubricants still in my equipment?
Yes, the nitrile rubber lips are compatible with mineral oils, greases, gasoline, diesel, animal and vegetable oils, and hot water.
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