SKF 18603 Shaft Seal HM14 1.875 x 2.625 x .328 in
Rotary shaft seal with nitrile rubber lip, 1.875 in inside diameter and .328 in width
- Product colorTransparent
- Overall width21/64 in
- Reliable sealing for rotating shafts with 1.875 in inside diameter
- Dual-lip design with nitrile rubber lip material resists oil and contaminants
- Withstands surface speeds up to 999 mps for high-speed applications
- Low-pressure rating of 10 psi suits standard engine environments
- Precise inch dimensions .328 in width by 2.625 in outside diameter ensure correct fit
Application fit
This SKF 18603 rotary shaft seal suits maintenance crews and rebuild shops replacing a worn lip on equipment with a 1.875 in shaft and a 2.625 in bore. The HM14 design code and single-lip nitrile construction target standard industrial lubricants at moderate speeds. Buyers who need a double-lip profile, a fluorocarbon lip for aggressive chemicals, or a metric-dimension seal cannot use this part.
Build and mounting
The uncoated metal case presses into the housing bore without adhesive, while the 0.328 in overall width seats against the shoulder or snap ring already machined in the application. Transparent nitrile rubber lets technicians confirm lip orientation and contact during installation. The seal arrives new and ready to fit; no secondary surface treatment or special tooling is required beyond standard press-in practice.
Operating envelope
Nitrile lip material limits continuous service to 10 psi maximum pressure and 999 mps surface speed, so high-pressure hydraulic pumps or extreme-speed spindles fall outside the design range. Single-lip geometry handles radial shaft motion but offers no exclusion lip for heavy contamination ingress. Engineers must verify shaft finish, run-out and temperature limits against the material envelope before specifying this seal.
How it compares
Measured against everything we stock in Engine Service & Diagnostic Tools, at today’s prices. Recalculated every night.
- Price $12.99
- Cheaper than about 75% of the 1,113 comparable items (median $19.99).
Specifications
| Product | |
|---|---|
| Brand name | SKF |
| Product color | Transparent |
| Size & build | |
| Overall width | 21/64 in |
Questions about this item
What maximum pressure does the HM14 rotary shaft seal withstand?
The HM14 rotary shaft seal is rated for a maximum pressure of 10 psi.
What are the shaft and bore diameters required for the 18603 shaft seal?
The 18603 shaft seal fits a 1.875 in shaft diameter and a 2.625 in bore diameter.
How is the NBR dual-lip seal installed, and which orientation step is often missed?
Press the uncoated case into the bore with the NBR lips facing the fluid side; the common error is reversing the lip direction.
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