{"product_id":"evil-energy-an8-orb-block-off-cap-set-3-4-16-unf-aluminum-hex-plugs-o-ring-sealed-2-pack","title":"EVIL ENERGY AN8 ORB Block-Off Cap Set — 3\/4-16 UNF Aluminum Hex Plugs, O-Ring Sealed (2-Pack)","description":"\u003cp\u003e\u003cstrong\u003eEVIL ENERGY's AN8 ORB block-off cap is a pair of milled 6061-T6 aluminum male adapters that seal AN8\/3\/4-16 UNF ports with an O-ring for reliable, high-pressure service.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese machined aluminum ORB plugs are designed to close off AN8-sized openings on fuel lines, rails, regulators and cooling components where a secure, reusable seal is needed. The kit includes two precision-threaded caps that mate with 3\/4-16 UNF hex ports, an elastomer O-ring for sealing, and a corrosion-resistant finish suitable for performance and maintenance tasks. Built to operate across a wide temperature range and rated for substantial system pressures, they simplify maintenance and modifications without requiring permanent fittings or welding.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these ORB block-off caps seal and stay leak-free?\u003c\/h3\u003e\n\u003cp\u003eThe caps use an elastomer O-ring seated in the face of the plug to create an ORB (O-ring boss) seal against the mating surface. When torqued to specification, the O-ring compresses and forms a fluid-tight barrier without damaging threads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFace-sealing O-ring design for repeatable, non-thread-sealing closure\u003c\/li\u003e\n  \u003cli\u003eNBR elastomer selected for chemical resistance in fuel and oil systems\u003c\/li\u003e\n  \u003cli\u003eHex body allows controlled torque with standard wrenches\u003c\/li\u003e\n  \u003cli\u003eDesigned to be removable for rework or inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat thread and size compatibility should I expect?\u003c\/h3\u003e\n\u003cp\u003eEach cap features AN8 hex threads specified as 3\/4-16 UNF, the common sizing for AN8 male fittings. Confirm port type as ORB\/O-ring boss or AN8-style threading before installation to ensure correct fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread specification: 3\/4-16 UNF (AN8 standard)\u003c\/li\u003e\n  \u003cli\u003eHex shape accommodates common wrenches for tightening and removal\u003c\/li\u003e\n  \u003cli\u003eIntended for ORB ports or equivalent hex boss ports on rails and housings\u003c\/li\u003e\n  \u003cli\u003eSold as a set of two caps for paired applications or spares\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat operating conditions and materials are these plugs rated for?\u003c\/h3\u003e\n\u003cp\u003eManufactured from 6061-T6 aluminum for a balance of strength and light weight, the plugs accept an NBR O-ring and are specified for use in high-pressure non-hydraulic applications such as fuel systems. They are rated for substantial pressure and a broad temperature envelope suitable for automotive and motorsport service environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: 6061-T6 aluminum body with NBR (nitrile) O-ring\u003c\/li\u003e\n  \u003cli\u003eWorking pressure rating up to approximately 1500 psi\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range from about -65°F to 252°F; O-ring tolerance listed 122°F–140°F\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant finish for durability in engine bays and exposed locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere are these block-off plugs typically used and how are they installed?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are commonly used to cap spare ports on fuel rails, pressure regulators, cooling components, and other AN8\/ORB-compatible fittings during assembly or when ports are not needed. Installation is straightforward: clean the port face, place the O-ring, thread the plug hand-tight, then finish with a wrench to the recommended torque.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon applications: fuel rails, fuel pressure regulators, coolant housings and manifold ports\u003c\/li\u003e\n  \u003cli\u003eInstallation: hand-start threads, then wrench-tighten using the hex flats—do not over-torque\u003c\/li\u003e\n  \u003cli\u003eReusable: remove and re-install without thread damage when serviced properly\u003c\/li\u003e\n  \u003cli\u003eSold as a two-piece set for convenience during works or as backups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, tuners, and DIY enthusiasts who work on performance fuel or cooling systems and need a dependable, removable way to seal AN8\/3\/4-16 ORB ports. The EVIL ENERGY caps are suited for shop repairs, vehicle builds, track-day prep, and maintenance tasks where a lightweight, corrosion-resistant plug with a reliable O-ring seal is preferred over permanent closures.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these AN8 plugs reusable?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The aluminum plugs and O-rings are designed for removal and reinstallation when handled and torqued properly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these caps fit non-ORB AN8 ports?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit ports sized 3\/4-16 UNF that accept an ORB face seal; confirm port type before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":67594194944185,"sku":"B0943KY1TT","price":52.51,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/evil-energy-an8-front-view_b227a857-398e-40c2-ba1f-f02ac16bbf10.jpg?v=1790582204","url":"https:\/\/redleafauto.ca\/products\/evil-energy-an8-orb-block-off-cap-set-3-4-16-unf-aluminum-hex-plugs-o-ring-sealed-2-pack","provider":"Redleaf Auto","version":"1.0","type":"link"}