{"product_id":"parker-821fr-4-blk-rl-push-on-air-hose-0-25-in-id-350-psi","title":"Parker 821FR-4-BLK-RL Push-on Air Hose 0.25 in Id 350 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PARKER 821FR-4-BLK-RL is a push-on air hose designed for compressed-air distribution in industrial and trade service environments. Built from black synthetic rubber, this hose features a 0.25 inch inside diameter and a 0.50 inch outside diameter. It carries a working pressure rating of 350 psi and handles a temperature range of -40 degrees F to 212 degrees F, making it suitable for demanding shop and field applications. The hose is sold in cut-to-length increments of 1 foot with a 25-foot minimum cut, pulled from a 575-foot coil. Licensed contractors and shop technicians working with pneumatic tools, air lines, and compressed-air distribution systems are the primary installers.\u003c\/p\u003e\u003cp\u003eThis hose fits residential and commercial pneumatic service installations where a flexible, push-on connection is required without reusable end fittings at the hose stage. The push-on design seats directly onto compatible barbed fittings, eliminating the need for clamps in low-assembly applications. It is commonly run in compressor rooms, service bays, and on-site pneumatic tool circuits. The cut-to-length format lets technicians size each run precisely for the job, reducing waste on multi-drop air systems or custom hose assemblies.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePush-on construction seats onto barbed fittings without clamps\u003c\/li\u003e\n\u003cli\u003e350 psi working pressure rating for compressed-air service\u003c\/li\u003e\n\u003cli\u003eSynthetic rubber construction for flexibility and durability\u003c\/li\u003e\n\u003cli\u003eWide temperature range: -40 degrees F to 212 degrees F\u003c\/li\u003e\n\u003cli\u003e0.25 inch inside diameter with 0.50 inch outside diameter\u003c\/li\u003e\n\u003cli\u003eSold in 1-foot increments from a 575-foot coil, 25-foot minimum cut\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard push-on barbed fittings sized for 0.25 inch ID air hose in compressed-air plumbing and pneumatic tool supply applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by pipefitters, HVAC-R technicians, or pneumatic systems mechanics. Depressurize and lock out the air supply before cutting or connecting hose sections. A clean, straight cut ensures full seating on barbed fittings and a proper seal. Verify that system working pressure does not exceed the 350 psi rating of this hose.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Type\u003c\/strong\u003e: Push-On Air Hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.50 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure\u003c\/strong\u003e: 350 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Temperature\u003c\/strong\u003e: -40 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Temperature\u003c\/strong\u003e: 212 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Synthetic Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: Cut to Length, 25-foot minimum, 575-foot total coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold In\u003c\/strong\u003e: 1-foot increments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 18 x 16 x 16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (per foot)\u003c\/strong\u003e: 0.087 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: PARKER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 821FR-4-BLK-RL\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51539496206642,"sku":"821FR-4-BLK-RL","price":429.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f582abe6dc297743479da240ba974485_98c84ec7-a72d-4c2d-a821-2aab84068b75.jpg?v=1785841751","url":"https:\/\/voomisupply.com\/products\/parker-821fr-4-blk-rl-push-on-air-hose-0-25-in-id-350-psi","provider":"Voomi Supply","version":"1.0","type":"link"}