Choosing a seal by size alone often repeats the same failure. For muddy and dusty machinery, buyers should verify shaft size, bore, width, speed, temperature, pressure, lubricant, shaft finish, housing condition and contamination severity. Integrated COMBI Seals combine contaminant exclusion with lubricant retention to help protect grease, bearings and shaft surfaces. This makes them suitable for hubs, axles, shafts and bearing housings where premature leakage and repeat maintenance are costly. A disciplined selection process reduces wrong-fit purchases and improves the chance of reaching planned service intervals.
Buyer Checklist for Integrated COMBI Seals
Specify from real operating conditions, not size alone.
Type: integrated rotary seal
Family: COMBI
Function: exclusion
Function: lubricant retention
Pain point: repeat failure
Contaminant: mud
Contaminant: dust
Contaminant: grit
Mud defense: supported
Dust defense: supported
Grease retention: supported
Bearing protection: supported
Shaft protection: supported
Lip protection: integrated
Ingress control: external
Leakage control: internal
Wear objective: lower abrasion
Uptime objective: fewer stops
Maintenance objective: longer intervals
Spare-part objective: fewer replacements
Application: hubs
Application: axles
Application: shafts
Application: bearing housings
Industry: construction
Industry: agriculture
Industry: industrial
Environment: muddy
Environment: dusty
Duty: severe
Design: all-in-one
Material: application-selected
Size: shaft/bore/width matched
Speed: verify
Temperature: verify
Pressure: verify
Shaft finish: inspect
Housing: inspect
Installation: align correctly
Inspection: monitor leakage
Replacement: damage or wear
Storage: clean and dry
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