{"product_id":"otr-ws305-wheel-seal-22500-lb-trailer-axle","title":"OTR WS305 Wheel Seal | 22,500 lb Trailer Axles","description":"\n\u003ch2\u003eOTR WS305 Wheel Seal for 22,500 lb Trailer Axles\u003c\/h2\u003e\n\n\u003cp\u003eProtect your commercial trailer's wheel bearings and hub assemblies with the \u003cstrong\u003eOTR WS305 Wheel Seal for 22,500 lb Trailer Axles\u003c\/strong\u003e. Designed for compatible heavy-duty trailer wheel ends, this replacement oil-bath wheel seal helps retain critical wheel bearing lubricant while protecting internal hub components from dirt, moisture, and road contaminants.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing durable \u003cstrong\u003enitrile rubber sealing material\u003c\/strong\u003e, the OTR WS305 is designed for demanding commercial trailer applications. Its sealing construction helps prevent lubricant leakage and supports reliable wheel-end operation during long-distance hauling, regional transportation, and everyday fleet service.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're repairing a leaking trailer wheel seal, replacing wheel bearings, or performing preventive maintenance on a commercial trailer, the \u003cstrong\u003eOTR WS305\u003c\/strong\u003e provides an aftermarket replacement option for properly matched 46305-family wheel-end applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number: WS305 | Manufacturer Reference: GS-WS-46305\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eOTR WS305 Features \u0026amp; Benefits\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e22,500 lb Trailer Axle Application:\u003c\/strong\u003e Designed for compatible heavy-duty commercial trailer axles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil-Bath Wheel Seal:\u003c\/strong\u003e Helps retain wheel-end lubricant inside the hub assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrile Rubber Sealing Material:\u003c\/strong\u003e Designed for demanding commercial vehicle wheel-end conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContamination Protection:\u003c\/strong\u003e Helps reduce the entry of dirt, dust, road debris, and moisture into the hub.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubricant Retention:\u003c\/strong\u003e Helps prevent oil leakage when correctly installed in a compatible wheel-end assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Bearing Protection:\u003c\/strong\u003e Supports proper lubrication of trailer wheel bearings and related components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Replacement:\u003c\/strong\u003e Suitable for qualifying commercial trailer maintenance and repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService-Friendly Installation:\u003c\/strong\u003e Designed for installation using appropriate seal-driving tools and manufacturer-approved procedures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFleet Maintenance Applications:\u003c\/strong\u003e Practical for trailer repair shops, commercial fleets, and owner-operators.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHeavy-Duty Trailer Wheel Seal for Commercial Trucks\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOTR WS305 trailer axle wheel seal\u003c\/strong\u003e helps maintain proper lubrication inside compatible commercial trailer wheel-end assemblies.\u003c\/p\u003e\n\n\u003cp\u003eWheel seals are essential components of the hub system because they help retain lubricant around the wheel bearings while preventing contaminants from entering the assembly.\u003c\/p\u003e\n\n\u003cp\u003eA correctly installed wheel seal helps:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eRetain wheel bearing lubricant inside the trailer hub\u003c\/li\u003e\n\u003cli\u003eReduce oil leaks around the wheel-end assembly\u003c\/li\u003e\n\u003cli\u003eProtect wheel bearings from dirt and moisture\u003c\/li\u003e\n\u003cli\u003eSupport consistent wheel-end lubrication\u003c\/li\u003e\n\u003cli\u003eHelp prevent lubricant-related bearing damage\u003c\/li\u003e\n\u003cli\u003eMaintain dependable commercial trailer operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDesigned for Compatible 22,500 lb Trailer Axles\u003c\/h2\u003e\n\n\u003cp\u003eThe OTR WS305 is intended for compatible \u003cstrong\u003e22,500 lb rated trailer axles\u003c\/strong\u003e using the required 46305-family wheel seal configuration.\u003c\/p\u003e\n\n\u003cp\u003ePotential applications include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHeavy-duty semi-trailers\u003c\/li\u003e\n\u003cli\u003eDry van trailers\u003c\/li\u003e\n\u003cli\u003eRefrigerated trailers\u003c\/li\u003e\n\u003cli\u003eFlatbed trailers\u003c\/li\u003e\n\u003cli\u003eCommercial freight trailers\u003c\/li\u003e\n\u003cli\u003eVocational trailers\u003c\/li\u003e\n\u003cli\u003eFleet trailers with compatible wheel-end assemblies\u003c\/li\u003e\n\u003cli\u003eOther commercial trailer axles requiring the specified wheel seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Trailer type and axle weight rating alone do not determine wheel seal fitment. Verify the original wheel seal part number, spindle dimensions, hub bore, and wheel-end configuration before purchasing.\u003c\/p\u003e\n\n\u003ch2\u003eOil-Bath Wheel Seal for Trailer Hub Assemblies\u003c\/h2\u003e\n\n\u003cp\u003eThe OTR WS305 is designed for compatible oil-lubricated trailer wheel ends. Proper lubricant retention is essential for protecting wheel bearings and reducing the risk of premature wheel-end component failure.\u003c\/p\u003e\n\n\u003cp\u003eThe seal helps maintain a protective barrier between the lubricated wheel-end assembly and the external road environment.\u003c\/p\u003e\n\n\u003cp\u003eFor dependable performance, always use the correct wheel-end lubricant and follow the axle or hub manufacturer's service instructions.\u003c\/p\u003e\n\n\u003ch2\u003eNitrile Rubber Sealing Material\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOTR WS305\u003c\/strong\u003e features nitrile rubber sealing material designed to provide durable sealing performance in approved commercial vehicle applications.\u003c\/p\u003e\n\n\u003cp\u003eThe sealing material helps resist normal exposure to wheel-end lubricants while supporting a barrier against dirt and environmental contaminants.\u003c\/p\u003e\n\n\u003cp\u003eCorrect seal installation, bearing adjustment, and hub condition are critical to the performance of the complete wheel-end assembly.\u003c\/p\u003e\n\n\u003ch2\u003eOTR WS305 Wheel Seal Cross References\u003c\/h2\u003e\n\n\u003cp\u003eThe OTR WS305 is associated with the \u003cstrong\u003e46305 wheel seal family\u003c\/strong\u003e. Common commercial truck parts catalog interchange references include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTR:\u003c\/strong\u003e WS305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTR Manufacturer Reference:\u003c\/strong\u003e GS-WS-46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKF:\u003c\/strong\u003e 46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKF:\u003c\/strong\u003e CR46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNational:\u003c\/strong\u003e 370025A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNational:\u003c\/strong\u003e 380025A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStemco:\u003c\/strong\u003e 372-7097\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStemco:\u003c\/strong\u003e 373-0143\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStemco:\u003c\/strong\u003e 373-0243\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Products:\u003c\/strong\u003e P46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeritor:\u003c\/strong\u003e MER0143\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTR:\u003c\/strong\u003e WS3725A\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCross-Reference Notice:\u003c\/strong\u003e These part numbers are provided for identification and interchange research. Seal dimensions, construction, installation methods, and wheel-end compatibility may vary by manufacturer. Confirm the correct replacement using the original seal number and the wheel-end manufacturer's specifications before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eSigns of a Failing Trailer Wheel Seal\u003c\/h2\u003e\n\n\u003cp\u003eA worn or damaged trailer wheel seal can allow lubricant to leak from the hub assembly or permit contaminants to enter the wheel-end components.\u003c\/p\u003e\n\n\u003cp\u003eCommon warning signs include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOil leaking around the trailer wheel hub\u003c\/li\u003e\n\u003cli\u003eLubricant collecting on the inside of the wheel or rim\u003c\/li\u003e\n\u003cli\u003eOil contamination around the brake assembly\u003c\/li\u003e\n\u003cli\u003eLow wheel-end lubricant levels\u003c\/li\u003e\n\u003cli\u003eVisible damage to the wheel seal\u003c\/li\u003e\n\u003cli\u003eContaminated wheel bearing lubricant\u003c\/li\u003e\n\u003cli\u003eAbnormal wheel-end heat associated with lubrication problems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTrailer wheel seal leaks should be inspected promptly. Loss of wheel-end lubricant can contribute to bearing damage, brake contamination, overheating, and potentially serious wheel-end failures.\u003c\/p\u003e\n\n\u003ch2\u003eOTR WS305 Product Specifications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e OTR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e WS305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e GS-WS-46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Heavy-Duty Wheel Oil Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Trailer Axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Rating:\u003c\/strong\u003e 22,500 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Inner Diameter \/ Shaft Diameter:\u003c\/strong\u003e 4.625 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Width:\u003c\/strong\u003e 0.875 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Lip Material:\u003c\/strong\u003e Nitrile Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubrication Application:\u003c\/strong\u003e Oil Bath\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Family:\u003c\/strong\u003e 46305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Wheel Seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTrailer Wheel Seal Installation \u0026amp; Maintenance\u003c\/h2\u003e\n\n\u003cp\u003eBefore installing the OTR WS305, inspect the trailer wheel hub, spindle sealing surface, wheel bearings, and related components for damage or excessive wear.\u003c\/p\u003e\n\n\u003cp\u003eUse the correct seal installation tool and follow the trailer axle, hub, and seal manufacturer's procedures. Improper installation can damage the seal and lead to premature lubricant leakage.\u003c\/p\u003e\n\n\u003cp\u003eDuring wheel-end maintenance:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify the original wheel seal part number and dimensions.\u003c\/li\u003e\n\u003cli\u003eInspect the spindle sealing surface for scoring or damage.\u003c\/li\u003e\n\u003cli\u003eCheck hub bore condition and cleanliness.\u003c\/li\u003e\n\u003cli\u003eInspect wheel bearings, races, and related components.\u003c\/li\u003e\n\u003cli\u003eUse the manufacturer-approved wheel-end lubricant.\u003c\/li\u003e\n\u003cli\u003eFollow the proper wheel bearing adjustment procedure.\u003c\/li\u003e\n\u003cli\u003eInspect for lubricant leakage after installation.\u003c\/li\u003e\n\u003cli\u003eCheck brake components for contamination or damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eProfessional Installation Recommended:\u003c\/strong\u003e Commercial trailer wheel-end assemblies are safety-critical. Improper seal installation, bearing adjustment, or lubrication can lead to serious component damage or failure. Wheel-end service should be performed by qualified technicians using the manufacturer's procedures.\u003c\/p\u003e\n","brand":"OTR","offers":[{"title":"Default Title","offer_id":67683104391213,"sku":null,"price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/4526\/0845\/files\/WS066_P01_TOP.jpg?v=1792084187","url":"https:\/\/performancedieselgroup.com\/products\/otr-ws305-wheel-seal-22500-lb-trailer-axle","provider":"Performance Diesel Group","version":"1.0","type":"link"}