{"product_id":"bell-gossett-52-128-640-002-series-ehsc-hsc-s-shaft-nut","title":"Bell \u0026 Gossett 52-128-640-002 Series eHSC\/HSC-S Shaft Nut","description":"\u003cp\u003eMaintain the structural integrity of your pumping system with the Bell \u0026amp; Gossett \u003cstrong\u003e52-128-640-002\u003c\/strong\u003e Shaft Nut, an essential component for securing the impeller assembly in Series \u003cstrong\u003eeHSC and HSC-S\u003c\/strong\u003e pumps. Engineered for precise threading and high-torque retention, this OEM part prevents vibrational loosening, ensuring the pump shaft remains centered and operational during high-demand cycles.\u003c\/p\u003e\u003cp\u003eThis shaft nut plays a critical role in the mechanical stability of the e-HSC pump line, which is engineered for internally self-flushing mechanical seals. By maintaining a secure connection, it allows the pump to operate without the need for external flush lines, supporting efficient heat dissipation and debris removal to extend overall seal life.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Manufactured to exact B\u0026amp;G tolerances for a perfect fit on Series eHSC\/HSC-S shafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Constructed from high-strength materials to resist the stresses of continuous hydronic operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliability:\u003c\/strong\u003e Genuine OEM component ensures compatibility with self-flushing seal mechanisms.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Recommended for use in commercial HVAC circulation, pressure boosting, and large-scale industrial fluid handling systems where Series eHSC or HSC-S pumps are utilized.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43131131920478,"sku":"52-128-640-002","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/52_128_640_002_image_7798fbc3-6b84-4bba-8cd1-438d7caac120.jpg?v=1786092179","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-52-128-640-002-series-ehsc-hsc-s-shaft-nut","provider":"National Boiler Supply","version":"1.0","type":"link"}