{"product_id":"national-wheel-seal-370025a-for-clark-rockwell-standard-fwrw-dynamic-edge-unitized-nitrile","title":"National wheel seal 370025A for Clark \u0026 Rockwell‑Standard FWRW — Dynamic Edge, unitized nitrile","description":"\u003cp\u003e\u003cstrong\u003eNational 370025A is a heavy-duty, unitized oil-bath wheel seal engineered to protect axle shafts and bores on Clark and Rockwell-Standard FWRW applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned by National — a sealing specialist with more than 75 years in the industry — this Dynamic Edge Red 37 Series seal provides durable point-contact sealing for oil-bath wheel ends. Its unitized construction, abrasion-resistant nitrile, and patented SURE-LOCK ribs combine to reduce leaks, resist wear, and simplify installation so you can return the vehicle to service with confidence.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 370025A keep oil in and contaminants out?\u003c\/h3\u003e\n\n\u003cp\u003eThe seal uses a spring-loaded main lip that maintains positive contact with the shaft while minimizing interference. The Dynamic Edge design creates a focused point seal for better retention of lubricant in oil-bath hubs and improved exclusion of dirt and moisture.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSpring-loaded main lip for sustained contact and sealing force\u003c\/li\u003e\n  \u003cli\u003eAbrasion-resistant nitrile compound that stands up to shaft wear\u003c\/li\u003e\n  \u003cli\u003eSURE-LOCK ribs on the I.D. and O.D. to inhibit shaft leaks and protect bores\u003c\/li\u003e\n  \u003cli\u003eTemperature-rated -40°F to 225°F \/ -40°C to 107°C for common operating ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this seal fit my Clark or Rockwell-Standard FWRW axle assembly?\u003c\/h3\u003e\n\n\u003cp\u003eCompatibility depends on the exact axle design and dimensions. National provides fit guidance, and online vehicle-fit tools can confirm compatibility when you supply year, make, model and axle details.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eEngineered specifically for Clark and Rockwell-Standard FWRW wheel ends\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle-fit information and qualifier notes before ordering\u003c\/li\u003e\n  \u003cli\u003eIf an online tool shows an information icon, review the additional notes for fit details\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and construction features improve durability and installation?\u003c\/h3\u003e\n\n\u003cp\u003eUnitized construction gives the seal greater structural integrity and protects the main lip during handling and installation. The rubber compounds and design details reduce installation errors and extend service life in oil-bath applications.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUnitized assembly simplifies installation and protects sealing elements\u003c\/li\u003e\n  \u003cli\u003eNitrile compound resists abrasion and typical service contaminants\u003c\/li\u003e\n  \u003cli\u003ePatented SURE-LOCK ribs guard bore surfaces and reduce migration\u003c\/li\u003e\n  \u003cli\u003eDynamic Edge geometry promotes point contact sealing for long-term performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I handle installation and service expectations?\u003c\/h3\u003e\n\n\u003cp\u003ePrepare the shaft and bore by cleaning and inspecting for wear or damage; replace or repair any compromised surfaces for best sealing performance. Install the unitized seal without distorting the lip and verify proper seating to prevent premature leaks.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eClean mating surfaces and check shafts for scoring or grooves\u003c\/li\u003e\n  \u003cli\u003eUse correct seating tools to avoid lip deformation during installation\u003c\/li\u003e\n  \u003cli\u003eVerify axial and radial fit per vehicle or axle specifications\u003c\/li\u003e\n  \u003cli\u003eMonitor the seal at first service interval for signs of seepage or wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The National 370025A is intended for professional mechanics, fleet technicians, and experienced DIYers working on Clark or Rockwell-Standard FWRW wheel ends that use oil-bath lubrication. It’s suited for vehicles and equipment that require a robust, unitized wheel seal with proven design features — especially where durability, straightforward installation, and reliable leak control are priorities.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the National 370025A compatible with my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Confirm fit by entering year, make, model, engine and trim in the vehicle-fit tool and review any qualifier notes shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What temperature range can this seal handle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The seal is rated for -40°F to 225°F (-40°C to 107°C), suitable for most oil-bath wheel-end conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":48084755153054,"sku":"B0012UCJYM","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/national-370025a-front-face-seal.jpg?v=1785861820","url":"https:\/\/northtrailauto.ca\/products\/national-wheel-seal-370025a-for-clark-rockwell-standard-fwrw-dynamic-edge-unitized-nitrile","provider":"North Trail Auto","version":"1.0","type":"link"}