{"product_id":"national-3747-wheel-seal","title":"National 3747 Wheel Seal - Rear","description":"\u003ch2\u003eOverview of National 3747 Wheel Seal\u003c\/h2\u003e\u003cp\u003eThe National 3747 wheel seal is engineered for reliable sealing performance in driveline and axle applications. Designed specifically for Chevrolet and GMC trucks and SUVs, this oil seal helps maintain proper lubrication and prevent contamination in wheel hubs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.703 inches (43.260 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 3.090 inches (78.490 mm)\u003c\/li\u003e\n\u003cli\u003eWidth: 0.500 inches (12.700 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable nitrile rubber for resistance to oil and wear\u003c\/li\u003e\n\u003cli\u003eBi-directional lip design for effective sealing under varying rotational directions\u003c\/li\u003e\n\u003cli\u003eRedicoat surface treatment for enhanced corrosion resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with housing bore of 3.084 inches (78.330 mm)\u003c\/li\u003e\n\u003cli\u003ePart of the National 3000 series oil seals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe National 3747 wheel seal is a precision-engineered oil seal designed to fit shafts with a diameter of 1.703 inches and housings with a bore diameter of approximately 3.084 inches. Constructed from nitrile material, it offers excellent resistance to petroleum-based fluids and mechanical wear, making it suitable for demanding automotive environments. The bi-directional lip design ensures effective sealing whether the shaft rotates clockwise or counterclockwise, reducing the risk of lubricant leakage and ingress of dirt or moisture. The redicoat finish provides additional protection against corrosion, extending the service life of the seal in harsh conditions.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis wheel seal is compatible with a range of Chevrolet and GMC trucks and SUVs, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet C20, C20 Suburban, C2500, C2500 Suburban\u003c\/li\u003e\n\u003cli\u003eChevrolet K20, K20 Suburban, K2500, K2500 Suburban\u003c\/li\u003e\n\u003cli\u003eChevrolet P20, P2500\u003c\/li\u003e\n\u003cli\u003eChevrolet R20, R20 Suburban, R2500, R2500 Suburban\u003c\/li\u003e\n\u003cli\u003eChevrolet V20, V20 Suburban, V2500, V2500 Suburban\u003c\/li\u003e\n\u003cli\u003eGMC G30\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by National 3747 Wheel Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks from wheel hubs and axle assemblies\u003c\/li\u003e\n\u003cli\u003eProtects bearings from dirt, dust, and moisture contamination\u003c\/li\u003e\n\u003cli\u003eReduces premature wear of driveline components\u003c\/li\u003e\n\u003cli\u003eMaintains proper lubrication for smooth wheel rotation\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly repairs due to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure shaft and housing surfaces are clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the seal lips during installation\u003c\/li\u003e\n\u003cli\u003eVerify correct orientation of the bi-directional lip design for optimal sealing\u003c\/li\u003e\n\u003cli\u003eCheck housing bore and shaft dimensions to confirm compatibility\u003c\/li\u003e\n\u003cli\u003eApply a light coating of lubricant on the seal lip to ease installation and prevent damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe National 3747 wheel seal is manufactured to meet industry standards for durability and performance. It is part of the National 3000 series, known for consistent quality in sealing solutions. This product includes a limited warranty against defects in material and workmanship, ensuring reliability when installed and used as intended.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448188534965,"sku":"BCZK-3747","price":25.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_3747_Fro.jpg?v=1774734513","url":"https:\/\/www.partcatalog.com\/products\/national-3747-wheel-seal","provider":"PartCatalog","version":"1.0","type":"link"}