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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
Lip Type Single Lip w/o Spring
Shaft Dia. 1.875 in
Lip Style Internal
Case Construction Steel Case w/Inner Case
Lip Material Nitrile
Inch/Metric Inch
Misalignment & Runout (In. @ Feet Per Minute) 0.005 Max
Surface Speed [Nom] 2,000 ft/min
Construction 4S
Cover/Compensation Ring/Plate Required No
Seal Design Assembled Design
Housing Bore Dia. 2 3/4 in
Pressure 0 psi
Spring Material None
Temperature Range [Min] -40 °F
Temperature Range [Max] 225 °F
Seal Application General Purpose
Weight 0.1 LB
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