Hub Caps

Sentinel® Hub Caps

Sentinel® Hub Caps provide an unmatched filtering system to eliminate contamination from dirt, dust, sand and water, making it easy to visually monitor lube levels. Featuring an innovative design and durable construction, Sentinel hub caps help extend equipment life and increase profitability.


Provides a tamper-proof hub cap system for maximum protection and maintenance-free performance.

Allows Sentinel Technology to be retrofitted on existing wheel ends with replacement hub cap plugs, or on drive axles with the STEMCO DAV Drive Axle Vent system.

The only waterproof hub cap in the industry.

Order OEM or retrofit in the aftermarket on a trailer, drive or steer axle.

STEMCO Defender™ hub caps with Sentinel Technology are made from composite materials with stainless steel reinforcement inserts that will not corrode.

  • Related Literature
  • Videos
  • Training

Tech Tip #13 – Sentinel Products and Internal Vacuum
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21181 Installation Instructions for STEMCO Hubodometer
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STEMCO Wheel End Catalog
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STEMCO Quick Reference Catalog
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STEMCO Wheel End Brochure
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STEMCO Hub Caps Brochure
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STEMCO Sentinel Flyer
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Tech Tip #52 – Hub Cap Torque Values and Bolt Specifications
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Inspection Rebuild Reassembly of Submerged Tractor and Trailer Wheel Ends
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Tech Tip #11- Hub Cap Lubricant Installation Procedure
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