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NATIONAL 3732S Specifications
Helix TypeClockwise-Spiral Lip Design
Housing Bore (Inch)1.575
Housing Bore (MM)40.010
Inside Diameter1.062 In.
Inside Diameter26.970 mm
MaterialNitrile
Outside Diameter1.581 in.
Outside Diameter40.160 mm
Outside Diameter (Inch)1.581
Outside Diameter (MM)40.160
Part DescriptionOil Seal
Series3000
Shaft (Inch)1.062
Shaft (MM)26.970
Thickness0.250 In.
Thickness6.350 MM
Type48
Unit of DimensionInch
Width (inch)0.250
Width (MM)6.350
NationalŪ Oil Seals & Bearings has built a reputation as one of the most respected names in the industry. They have offered premium sealing and wheel end solutions for more than 75 years. Their design and engineering teams keep pace with the industry and provide advanced solutions for today's vehicles.

Features & Benefits:
  • Design type: spring loaded; single-lip
  • Temperature range: -40°F to 225°F / -40°C to 107°C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
OEM / Interchange Numbers: 476793

NATIONAL Warranty Information:
12 Months