{"product_id":"buna-n-homogeneous-hydraulic-u-seal","title":"Buna-N Homogeneous Hydraulic U-Seal","description":"\u003ch2\u003eBuna-N Homogeneous Hydraulic U-Seal\u003c\/h2\u003e\u003cp\u003eEngineered for reliable rod and piston sealing in standard hydraulic cylinder applications, this Buna-N Homogeneous U-Seal delivers consistent performance across a wide range of industrial fluids and operating conditions. The homogeneous construction — molded from a single compound throughout — eliminates fabric or reinforcement layers, providing uniform flexibility and a clean sealing lip profile ideal for low-to-medium pressure systems.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomogeneous construction\u003c\/strong\u003e — single-compound molding ensures uniform flexibility and consistent lip contact across the full seal cross-section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent fluid compatibility\u003c\/strong\u003e — Buna-N (NBR) compound resists petroleum-based hydraulic fluids, mineral oils, and water-based fluids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-energizing U-lip profile\u003c\/strong\u003e — system pressure activates the seal lips for a positive, leak-resistant seal under load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-effective performance\u003c\/strong\u003e — ideal for standard-duty hydraulic cylinders where urethane or PTFE compounds are not required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide size availability\u003c\/strong\u003e — stocked in a full range of standard rod and bore dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStandard-duty hydraulic cylinders (industrial and mobile)\u003c\/li\u003e\n\u003cli\u003eAgricultural and light construction equipment\u003c\/li\u003e\n\u003cli\u003eMaterial handling and lift systems\u003c\/li\u003e\n\u003cli\u003eOEM and MRO replacement sealing\u003c\/li\u003e\n\u003cli\u003ePneumatic and low-pressure hydraulic circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMaterial Properties\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound:\u003c\/strong\u003e Buna-N (NBR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 70–80 Shore A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F (-40°C to +121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e Up to 1,500 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid Compatibility:\u003c\/strong\u003e Petroleum-based hydraulic fluids, mineral oils, water-glycol mixtures, diesel fuels\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in standard rod and bore sizes. Contact us for custom dimensions or alternative NBR durometers for specialized applications.\u003c\/p\u003e","brand":"Hercules","offers":[{"title":"HRU12-0.75-12","offer_id":43108025335879,"sku":"HRU12-0.75-12","price":4.27,"currency_code":"USD","in_stock":true},{"title":"HRU15-1.18-15","offer_id":43108025368647,"sku":"HRU15-1.18-15","price":5.34,"currency_code":"USD","in_stock":true},{"title":"HRU15-1.37-15","offer_id":43108025401415,"sku":"HRU15-1.37-15","price":6.05,"currency_code":"USD","in_stock":true},{"title":"HRU15-1.43-15","offer_id":43108025434183,"sku":"HRU15-1.43-15","price":6.05,"currency_code":"USD","in_stock":true},{"title":"HRU18-1.62-18","offer_id":43108025466951,"sku":"HRU18-1.62-18","price":6.05,"currency_code":"USD","in_stock":true},{"title":"HRU18-1.87-18","offer_id":43108025499719,"sku":"HRU18-1.87-18","price":6.05,"currency_code":"USD","in_stock":true},{"title":"HRU18-1.37-18","offer_id":43108025532487,"sku":"HRU18-1.37-18","price":5.74,"currency_code":"USD","in_stock":true},{"title":"HRU21-2.81-21","offer_id":43108025565255,"sku":"HRU21-2.81-21","price":10.89,"currency_code":"USD","in_stock":true},{"title":"HRU25-1.37-25","offer_id":43108025598023,"sku":"HRU25-1.37-25","price":8.98,"currency_code":"USD","in_stock":true},{"title":"HRU28-4.43-28","offer_id":43108025630791,"sku":"HRU28-4.43-28","price":24.53,"currency_code":"USD","in_stock":true},{"title":"HRU31-6.37-31","offer_id":43108025663559,"sku":"HRU31-6.37-31","price":40.38,"currency_code":"USD","in_stock":true},{"title":"HRU31-5.37-31","offer_id":43108025696327,"sku":"HRU31-5.37-31","price":25.53,"currency_code":"USD","in_stock":true},{"title":"HRU31-5.50-31","offer_id":43108025729095,"sku":"HRU31-5.50-31","price":33.56,"currency_code":"USD","in_stock":true},{"title":"HU25-3.50-25V","offer_id":43108025761863,"sku":"HU25-3.50-25V","price":54.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/1204\/2567\/files\/239296ED-B9B9-4D92-A4D7-941C4665EF1E.jpg?v=1787068213","url":"https:\/\/yarbroughindustries.shop\/products\/buna-n-homogeneous-hydraulic-u-seal","provider":"Yarbrough Industries","version":"1.0","type":"link"}