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This part may be obsolete or discontinued.
There may be limited quantities still available for purchase. Contact us for availability. Please contact your local service center for alternative options.
National42421S

42421S

Single Lip Without Spring
Item #106208055
  • 1.875" Shaft Diameter
  • 2.750" Housing Bore Diameter
  • .250" Width
  • Nitrile
  • Type4S
  • Single Lip w/o Spring Shaft Seal
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National42421S
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    Shipment Options
  • 1.875" Shaft Diameter
  • 2.750" Housing Bore Diameter
  • .250" Width
  • Nitrile
  • Type4S
Cover/Compensation Ring/Plate Required No
Temperature Range [Min] -40 °F
Shaft Dia. 1.875 in
Lip Material Nitrile
Spring Material None
Lip Style Internal
Inch/Metric Inch
Case Construction Steel Case w/Inner Case
Lip Type Single Lip w/o Spring
Misalignment & Runout (In. @ Feet Per Minute) 0.005 Max
Housing Bore Dia. 2 3/4 in
Seal Application General Purpose
Temperature Range [Max] 225 °F
Seal Design Assembled Design
Pressure 0 psi
Surface Speed [Nom] 2,000 ft/min
Construction 4S
Weight 0.1 LB
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