{"product_id":"keystone-rtf990-dn125-butterfly-valve-rubber-ring-sealing-sleeve","title":"Keystone RTF990 DN125 EPDM Rubber Sealing Sleeve, for Butterfly Valves, 5-inch (DN125) Wafer\/Lug Type","description":"\u003cp\u003e\u003cstrong\u003eKeystone RTF990 DN125 EPDM Rubber Sealing Sleeve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Keystone RTF990 DN125 EPDM rubber sealing sleeve is a critical replacement component designed specifically for DN125 (5-inch) Keystone butterfly valves. This high-quality sealing sleeve, often referred to as a \"liner\" or \"seat,\" plays a pivotal role in ensuring the tight shut-off and leakage prevention within the valve assembly.\u003c\/p\u003e\n\u003cp\u003eManufactured from EPDM (Ethylene Propylene Diene Monomer) rubber, the RTF990 sleeve offers excellent resistance to a wide range of media including hot and cold water, diluted acids, alkalis, alcohols, ketones, and steam. Its EPDM composition provides superior elastic properties, excellent weather and ozone resistance, and a broad temperature operating range typically from -40°C to +120°C, making it ideal for numerous general-purpose industrial and HVAC applications.\u003c\/p\u003e\n\u003cp\u003eThe design of the sleeve is tailored to fit the internal contours of compatible Keystone butterfly valves, ensuring a perfect seal against the disc when the valve is in the closed position. Regular maintenance and replacement of the sealing sleeve with genuine Keystone parts like the RTF990 are essential to maintain the valve's optimal performance, prevent costly leaks, and extend the operational life of the entire system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eKeystone (A brand of Emerson)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRTF990 (Designation for EPDM Rubber Sealing Sleeve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRTF990 DN125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eButterfly Valve Sealing Sleeve \/ Liner \/ Seat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEPDM (Ethylene Propylene Diene Monomer) Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Diameter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDN125 (125mm) \/ 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRubber ring sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range (Typical):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-40°C to +120°C (Material dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHot\/cold water, diluted acids, alkalis, alcohols, ketones, steam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReplacement part for Keystone butterfly valves to ensure tight shut-off and prevent leakage in HVAC, water treatment, general industrial, and chemical applications.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keystone","offers":[{"title":"Default Title","offer_id":49737258303767,"sku":null,"price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/keystone-valve-keystone-rtf990-dn50-butterfly-valve-rubber-ring-sealing-sleeve-1212525564.png?v=1766351765","url":"https:\/\/www.apexonsupply.com\/products\/keystone-rtf990-dn125-butterfly-valve-rubber-ring-sealing-sleeve","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}