{"product_id":"value-collection-zmscv70156-viton-o-ring-dash-156","title":"Value Collection ZMSCV70156 Viton O-ring Dash 156","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCV70156 is a Dash 156 Viton (fluoroelastomer) O-ring with a round cross section, engineered for static and dynamic sealing applications in demanding environments. It measures 4.25 inches inside diameter, 4.438 inches outside diameter, and 0.0937 inches thick. The fluoroelastomer compound delivers high temperature resistance up to 400 degrees F, a low compression set, and broad chemical compatibility — including good resistance to petroleum products. The durometer hardness rating is 70, placing it in the hard classification. Licensed plumbers, pipefitters, and maintenance mechanics commonly install this size in fluid system assemblies and rotating equipment seals.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in petroleum-based fluid systems, hydraulic circuits, fuel handling equipment, and vacuum service applications where high temperatures or chemical exposure would degrade standard nitrile or EPDM seals. Its low gas permeability makes it a sound choice for vacuum sealing scenarios. The working temperature range of -15 degrees F minimum to 400 degrees F maximum covers the majority of commercial and industrial service conditions. Sold in a package quantity of two rings per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFluoroelastomer (Viton) material provides superior resistance to petroleum products and hydrocarbon-based fluids\u003c\/li\u003e\n  \u003cli\u003eHigh maximum working temperature of 400 degrees F suits demanding thermal environments\u003c\/li\u003e\n  \u003cli\u003eLow compression set helps maintain long-term sealing integrity under sustained load\u003c\/li\u003e\n  \u003cli\u003eLow gas permeability makes this ring suitable for vacuum service applications\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile fits standard Dash 156 groove dimensions\u003c\/li\u003e\n  \u003cli\u003eDurometer hardness of 70 (hard rating) resists extrusion under elevated pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Dash 156 replacement O-ring compatible with petroleum products and a wide spectrum of chemical media; consult groove dimensions and fluid compatibility charts to confirm fitment before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eShut down and depressurize the system fully before removing the old seal. Inspect the groove for nicks, corrosion, or out-of-tolerance dimensions that could compromise the new seal. Lightly lubricate the O-ring with a compatible fluid or assembly lubricant — avoid petroleum-based greases if the sealing environment requires it — then seat the ring evenly without twisting or stretching. Follow applicable ASME or system-specific pressure codes when returning the assembly to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Fluoroelastomer (Viton)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 156\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4.438 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0937 inches (3\/32 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 (Hard)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -15 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 Media\u003c\/strong\u003e: Petroleum products; wide spectrum chemical compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\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: 2 rings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\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: ZMSCV70156\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720665923890,"sku":"ZMSCV70156","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ba3b77da69473f86c74ae0cd7c8c72aa.jpg?v=1788567441","url":"https:\/\/voomisupply.com\/products\/value-collection-zmscv70156-viton-o-ring-dash-156","provider":"Voomi Supply","version":"1.0","type":"link"}