{"product_id":"value-collection-zmsctst018-ptfe-o-ring-dash-018-25-pack","title":"Value Collection ZMSCTST018 Ptfe O-ring Dash 018 25-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCTST018 is a Dash 018 polytetrafluoroethylene (PTFE) O-ring designed for static and dynamic sealing applications across HVAC, plumbing, refrigeration, and industrial fluid systems. It measures 0.768 inches inside diameter, 0.875 inches outside diameter, and 0.048 inches thick with a rectangular cross-section. The PTFE compound provides a hardness rating of 55 durometer and handles a wide service temperature range from -65 degrees F to 500 degrees F, making it suitable for both cryogenic and high-heat sealing environments. Each purchase includes a package of 25 O-rings. Installation is typically performed by licensed HVAC technicians, plumbers, or mechanical contractors.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for use in residential and commercial systems where chemical resistance, temperature extremes, or media compatibility rule out standard elastomeric compounds. Common applications include refrigerant line fittings, high-temperature water connections, chemical handling equipment, and compressed gas assemblies. The rectangular cross-section provides a stable, predictable seating profile in flat-face grooves. PTFE construction resists degradation from oils, solvents, acids, and common refrigerants, making the ZMSCTST018 a reliable choice for demanding service conditions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePTFE material provides broad chemical resistance and low friction\u003c\/li\u003e\n\u003cli\u003eService temperature range: -65 degrees F to 500 degrees F\u003c\/li\u003e\n\u003cli\u003e55 durometer medium hardness for consistent compression and sealing\u003c\/li\u003e\n\u003cli\u003eRectangular cross-section for stable seating in flat-face and step grooves\u003c\/li\u003e\n\u003cli\u003eDash 018 standard sizing ensures cross-reference compatibility with groove charts\u003c\/li\u003e\n\u003cli\u003eSold in a convenient 25-piece package\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style and aftermarket replacement O-ring for any application requiring a Dash 018 rectangular cross-section PTFE seal in static or low-dynamic sealing grooves.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified technician following the applicable mechanical or plumbing code for the system type. De-energize, depressurize, and drain or evacuate the system before replacing any O-ring seal. Inspect the seating groove for burrs, corrosion, or damage before installing the new O-ring. Avoid using petroleum-based lubricants with PTFE O-rings; use a compatible assembly lubricant appropriate for the media being sealed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Polytetrafluoroethylene (PTFE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 018\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.768 inches (19.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.875 inches (22.23 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.047 inches (1.19 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Rectangle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 55 durometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness Rating\u003c\/strong\u003e: Medium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -65 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 500 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ZMSCTST018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51707276493106,"sku":"ZMSCTST018","price":27.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/30b4cf84e8413a0ccc2591328d901348_712c4362-886a-4771-bea7-e5445c2c64ff.jpg?v=1788439347","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsctst018-ptfe-o-ring-dash-018-25-pack","provider":"Voomi Supply","version":"1.0","type":"link"}