Overview
The CR Seals 34398 oil seal is a single-lip rotary shaft seal manufactured by Chicago Rawhide (SKF) featuring wave lip technology. This metal-cased seal is engineered for high-performance sealing in mechanical power transmission systems, industrial equipment, and heavy-duty truck applications. The wave lip design generates sinusoidal motion that reduces heat generation and friction during operation, extending seal life and improving efficiency.
Key Features
- SKF wave lip design delivers up to 30% less heat and 20% less friction compared to conventional seals
- Single-lip construction with nitrile rubber (NBR) material for oil and grease compatibility
- Steel metal case with Bore-Tite coating on the outer diameter for firm, accurate fit in housing
- CRWH1 design type ensures easy installation and secure bore press fit
- Carbon steel garter spring for consistent lip tension
Technical Specifications
- Shaft Diameter (ID): 3.438 inches (87.33 mm)
- Outside Diameter (OD): 4.876 inches (123.85 mm)
- Overall Width: 0.438 inches (11.13 mm)
- Lip Type: Wave lip (single lip)
- Seal Type: Solid (not split)
- Material: Nitrile Rubber (NBR) with steel case
- Design Code: CRWH1
- Installation Method: Housing press fit
- Lubricant Compatibility: Oil or grease
- Height: 0.945 inches
- Manufacturer UPC: 085311031998
Typical Applications
The CR Seals 34398 is commonly used in heavy-duty truck applications, automotive transmissions, industrial gearboxes, hydraulic systems, and rotating shaft assemblies where oil or grease lubrication is present. Its wave lip design makes it ideal for applications requiring low friction and reduced operating temperatures.
Compatibility & Replacements
Compatible With
- SKF rotary shaft seal systems and bearing arrangements
- Standard press-fit housing bores with 4.876″ diameter specifications
- Oil and grease lubrication systems
- Industrial equipment utilizing 3.438″ shaft diameters
Replaces / Drop-In Replacement For
- Chicago Rawhide CR 34398 (original designation)
- SKF CR 34398
- Direct replacement for OEM equipment originally specified with 34398 oil seals
Works With
- Compatible V-rings: 400850, 400851, 400854, 400855
- Compatible wear sleeves: 99339
- Standard radial shaft seal installation equipment and press tools
- Any equipment rated for CRWH1 design type oil seals
