{"product_id":"armstrong-as1270-264-epdm-o-ring-7-484-i-d-x-139-cs","title":"Armstrong AS1270-264 - EPDM O-Ring, 7.484\" I.D. x .139\" CS","description":"\u003cp\u003eMaintain system integrity and prevent costly leaks with the \u003cstrong\u003eArmstrong AS1270-264\u003c\/strong\u003e EPDM O-Ring. This precision-engineered seal is designed to provide a secure, long-lasting interface within your Armstrong hydronic equipment, ensuring optimal pressure retention and performance reliability. By choosing this \u003cstrong\u003eAS1270-264\u003c\/strong\u003e replacement, you ensure a perfect fit for your specific fluid handling application.\u003c\/p\u003e\u003cp\u003eThis O-ring utilizes high-grade EPDM (Ethylene Propylene Diene Monomer) rubber, selected for its superior resistance to heat, water, and steam degradation. The cross-sectional design allows for even compression under load, creating a robust physical barrier that maintains a consistent seal even during fluctuating thermal cycles or system vibration.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Composition:\u003c\/strong\u003e High-resilience EPDM elastomer for extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing Efficiency:\u003c\/strong\u003e Precision-molded 7.484\" inside diameter for exact equipment alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Resistance:\u003c\/strong\u003e Optimized for standard hydronic fluid temperatures and water conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e This O-ring is intended for internal pump and system housing maintenance. Ensure the mating surfaces are thoroughly cleaned and lubricated with an O-ring-compatible sealant prior to installation to prevent damage during seating.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43136366542942,"sku":"AS1270-264","price":41.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/AS1270_264_image_8941a9e9-01de-44a2-a866-c343ffcc1824.png?v=1786130487","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-as1270-264-epdm-o-ring-7-484-i-d-x-139-cs","provider":"National Boiler Supply","version":"1.0","type":"link"}