ENVIRONMENTAL VARIATIONS
Aggressive chemicals
Dust and mud
Ozone
Paint
Power washers
Temperature
Windings, grass or wire |
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HOUSING VARIATIONS
Concentricity
Diameter
Finish
Lead-in chamfer
Material
Roundness |
OPERATIONAL VARIATIONS
Cycle time
Down time
Pressure spikes
Run hours
Run time at maximum RPM
Run time at maximum pressure |
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FLUID VARIATIONS
Chemical activity
Chemical breakdown
Contamination
Pressure
Temperature
Viscosity |
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SEAL ELASTOMER VARIATIONS
Abrasion resistance
Chemical stability
Creep
Cross-linking
Crystallization
Elastic vibration and
dampening
Frictional properties
Hardness
Resilience
Stress relaxation
Strain rate
Thermal reversion
Temperature hardening
Volume change |
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SHAFT VARIATIONS
Axial movement
Chamfer
Diameter
Eccentricity
Finish
Hardness
Roundness
Speed
Wear |
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SEAL CONFIGURATION VARIATIONS
Barrel angle
Case size
Lip hoop load
Lip beam hoop load
Lip contact area
Lip edge geometry
Lip height
Lip interference
R-value
Scraper angle
Seal to bore interference
Spring radial load |
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