{"product_id":"value-collection-zmscfs348-fluorosilicone-o-ring-dash-348","title":"Value Collection ZMSCFS348 Fluorosilicone O-ring Dash 348","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCFS348 is a fluorosilicone O-ring with a round cross section, designed for static and dynamic sealing applications that demand reliable performance across extreme temperature ranges and exposure to petroleum-based fluids. It measures 4.375 inches inside diameter, 4.75 inches outside diameter, and 0.1875 inches thick, conforming to the Dash 348 sizing standard. The fluorosilicone compound delivers good resistance to both low and high temperatures as well as strong resistance to petroleum oils and fuels. This O-ring is compliant with MIL-R-25988 Type 1 Class 1, making it suitable for aerospace-grade fuel system sealing and related demanding service environments.\u003c\/p\u003e\n\u003cp\u003eThis O-ring sees use in aerospace fuel systems, hydraulic circuits, and any application requiring resistance to diester-base lubricants up to 350 degrees F. It is also appropriate for industrial sealing applications where petroleum oil and fuel contact is a factor. Licensed A and P mechanics, hydraulic system technicians, and industrial maintenance professionals typically source this part for scheduled maintenance, overhaul work, or system repairs. Note that due to limited abrasion resistance, application selection should account for this material characteristic when dynamic contact wear is a concern.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorosilicone compound rated from -80 degrees F to 400 degrees F operating temperature range\u003c\/li\u003e\n  \u003cli\u003eRound cross section conforming to Dash 348 standard dimensions\u003c\/li\u003e\n  \u003cli\u003eMIL-R-25988 Type 1 Class 1 compliant for aerospace and defense applications\u003c\/li\u003e\n  \u003cli\u003eExcellent resistance to petroleum oils and fuels including diester-base lubricants\u003c\/li\u003e\n  \u003cli\u003eHardness rating of 70 Shore A (Hard) for stable sealing under compression\u003c\/li\u003e\n  \u003cli\u003eBlue color for easy material identification during inspection and installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Dash 348 standard O-ring replacement for aerospace fuel systems, hydraulic systems, and industrial assemblies requiring fluorosilicone sealing material with resistance to petroleum products and diester-base lubricants.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by qualified mechanics or technicians familiar with sealing system procedures. Depressurize and drain the system fully before removing the old O-ring and inspect the groove for damage, burrs, or contamination before seating the new ring. Lubricate the O-ring with a fluid compatible with fluorosilicone prior to installation to prevent twisting or tearing during assembly. Do not use petroleum-based greases incompatible with fluorosilicone compounds, and do not overstretch the ring during fitting.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Fluorosilicone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 348\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 70 Shore A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Rating\u003c\/strong\u003e: Hard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -80 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 400 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Material\u003c\/strong\u003e: Petroleum Products\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Blue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance\u003c\/strong\u003e: MIL-R-25988 Type 1 Class 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: ZMSCFS348\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51710185636146,"sku":"ZMSCFS348","price":20.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_88971d45-67aa-48c3-93e5-998f88c4ba30.jpg?v=1788464030","url":"https:\/\/voomisupply.com\/products\/value-collection-zmscfs348-fluorosilicone-o-ring-dash-348","provider":"Voomi Supply","version":"1.0","type":"link"}