Peerless Industrial Group
Peerless Industrial Group Tire Chains Single Bus & RV V-Bar PK2 QG2821
$67.99
0.0008179BTC
In stock
SKF
SKF 15543 rotary shaft seal 1-9/16 x 2-23/64 x 5/16 in CRWA1
Rotary shaft seal with 1.563 in inside diameter and 2.374 in outside diameter handles speeds up to 3,300 RPM
- ColorTransparent
- Width5/16"
- Seals rotating shafts with 2 nitrile lips
- Handles 10 psi pressure at 3,300 RPM
- Carbon steel spring maintains lip contact
- Fits 1.563 in bore and 2.374 in housing
- Resists oils, fuels, greases and hot water
Shaft seal for engine maintenance
The SKF 15543 rotary shaft seal fits bores with a 2.374 in outside diameter and a 1.563 in inside diameter. It uses a CRWA1 design code with two nitrile rubber lips and a carbon steel spring. The acrylic-coated case resists animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Mechanics select this part when replacing worn crankshaft or transmission seals in standard automotive engines.
Thermal and pressure behaviour
The seal operates at a maximum pressure of 10 psi and a maximum rotational speed of 3,300 RPM. Surface speed is rated at 6.9 mps under normal running conditions. Nitrile rubber lips maintain consistent contact without excessive drag, keeping frictional heat low during continuous operation. The carbon steel spring provides steady radial force across the temperature range found in typical engine bays.
Critical fit dimension
The overall width is .313 in, which determines whether the seal seats correctly in the housing groove. Verify this width against the original component before ordering, as an incorrect thickness prevents proper lip contact and leads to leakage. Buyers who need a different width or a single-lip design cannot use this part.
Highlights
- Seals rotating shafts with 2 nitrile lips
- Handles 10 psi pressure at 3,300 RPM
- Carbon steel spring maintains lip contact
- Fits 1.563 in bore and 2.374 in housing
- Resists oils, fuels, greases and hot water
Specifications
| Brand | SKF |
|---|---|
| Color | Transparent |
| Width | 5/16" |
Questions about this item
How do I install the 15543 seal with its 1.563 in shaft diameter and acrylic-coated case?
Press the seal squarely into the bore until the 2.374 in outside diameter seats flush; use a sleeve that contacts only the metal case so the nitrile lips and carbon-steel spring stay undamaged.
When will the nitrile rubber lips on this CRWA1 seal need replacement?
Inspect the dual lips at every service interval; replace the seal if the nitrile hardens, cracks or leaks fluid — the 10 psi pressure limit and 6.9 mps surface speed accelerate wear in hot oil or gasoline.
What operating limit appears first during continuous running at 3,300 RPM?
The 6.9 mps maximum surface speed is reached at the rated 3,300 RPM on the 1.563 in shaft; exceeding it overheats the nitrile lips and causes premature failure.
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