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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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Price Unavailable
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    Shipment Options
  • 1.875" Shaft Diameter
  • 2.750" Housing Bore Diameter
  • .250" Width
  • Nitrile
  • Type4S
Lip Style Internal
Temperature Range [Min] -40 °F
Shaft Dia. 1.875 in
Surface Speed [Nom] 2,000 ft/min
Cover/Compensation Ring/Plate Required No
Inch/Metric Inch
Case Construction Steel Case w/Inner Case
Construction 4S
Seal Design Assembled Design
Seal Application General Purpose
Spring Material None
Lip Type Single Lip w/o Spring
Housing Bore Dia. 2 3/4 in
Lip Material Nitrile
Temperature Range [Max] 225 °F
Misalignment & Runout (In. @ Feet Per Minute) 0.005 Max
Pressure 0 psi
Weight 0.1 LB
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