NATIONAL SEALS part description

Durable, the National® hub cap is made of rugged cast aluminum offering unbeatable protection for wheel end systems.
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 70 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
  • Unbeatable protection for wheel end systems
  • Cast aluminum hub cap
  • Zytel® inspection window resists window clouding and cracking
  • Steel Torx® screws eliminate back-out and resist contamination
  • Slit-style vent plugs reduce pressure while preventing contamination
  • Fel-Pro® hub cap gasket included

Part Specifications

NATIONAL HUB CAP SPECS
Part Description Hub Cap & Gasket
Application Oil
Bolt Circle (Inch) 5.875
Bolt Circle (MM) 149.225
Bolt Hole Diameter (Inch) 0.358
Bolt Hole Diameter (MM) 9.093
Number of Bolt Holes 6
Overall Height (Inch) 2.375
Overall Height (MM) 60.325
Inside Depth (Inch) 1.625
Inside Depth (MM) 41.275
Flange Inside Diameter (Inch) 5.180
Flange Inside Diameter (MM) 131.572
Flange Outside Diameter (Inch) 6.585
Flange Outside Diameter (MM) 167.259
Material Cast Aluminum
Footnote National center fill plug and side fill plug
Gasket GKT036
Window Kit WK5995
Plug B299

With over 75 years of industry experience, National® Seals has established a rock-solid reputation as the most trusted brand of premium wheel-end solutions. It provides the global market with a comprehensive portfolio of high-quality, no-compromise bearings and sealing products for various applications across different industries. True to the brand’s commitment to quality, safety, and performance, its design team keeps pace with industry-leading, advanced technologies to incorporate innovative features and patented systems in every National® Seals product. Among the industry’s best-kept secrets created by National® Seals are the DYNAMIC EDGE® innovative technology, SureSignal™ technology, and Gold 38 Series with PTFE compound.

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