{"product_id":"value-collection-zmsctst338-ptfe-o-ring-dash-338-10-pack","title":"Value Collection ZMSCTST338 Ptfe O-ring Dash 338 10-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCTST338 is a Dash 338 O-ring made from polytetrafluoroethylene (PTFE), a high-performance fluoropolymer seal material suited for demanding fluid and gas sealing applications. This O-ring features a rectangle cross section with a 3.143-inch inside diameter, a 3.509-inch outside diameter, and a thickness of 0.0625 inches. It carries a durometer hardness rating of 55, placing it in the medium range. PTFE construction gives this seal a wide service temperature range of -65 to 500 degrees F, making it compatible with aggressive media where standard elastomers would degrade. Licensed plumbers, HVAC technicians, and industrial maintenance professionals are the primary installers.\u003c\/p\u003e\u003cp\u003eThis O-ring is used in static sealing applications across plumbing, hydraulic, pneumatic, and fluid processing systems where chemical resistance and thermal stability are required. The PTFE material resists oils, fuels, solvents, and many corrosive chemicals. The rectangle cross section provides consistent sealing contact in grooves designed for flat-profile seals. This item is sold in packages of 10, making it suitable for both single repairs and small-batch maintenance jobs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePTFE material provides broad chemical resistance and wide temperature tolerance from -65 to 500 degrees F\u003c\/li\u003e\n\u003cli\u003eRectangle cross section for consistent sealing in flat-groove applications\u003c\/li\u003e\n\u003cli\u003eDash 338 standard sizing ensures compatibility with grooves specified to that dash number\u003c\/li\u003e\n\u003cli\u003eMedium hardness rating (55 durometer) balances compression set resistance and sealing force\u003c\/li\u003e\n\u003cli\u003eInside diameter of 3.143 inches and outside diameter of 3.509 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003ePackaged in quantities of 10 to support maintenance stock needs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in static seal grooves dimensioned to the Dash 338 standard, with a 3.143-inch inside diameter and 0.0625-inch thickness, in plumbing, hydraulic, pneumatic, and fluid processing equipment requiring PTFE seals.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall by a qualified plumber, HVAC technician, or industrial maintenance mechanic following applicable system codes. Depressurize and isolate the system completely before removing the old seal or installing the new one. Ensure the groove dimensions match the Dash 338 profile before installation. PTFE O-rings do not require lubrication but ensure the groove is clean and free of burrs to avoid damage to the seal during assembly.\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: 338\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.143 inches (79.83 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.509 inches (98.42 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0625 inches (1.78 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\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.29 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31401503\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: ZMSCTST338\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51701709340978,"sku":"ZMSCTST338","price":33.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/30b4cf84e8413a0ccc2591328d901348_f11f9244-177c-4f13-b922-2d8be0db6cbb.jpg?v=1788404158","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsctst338-ptfe-o-ring-dash-338-10-pack","provider":"Voomi Supply","version":"1.0","type":"link"}