EVIL ENERGY 6AN Flare to AN8 ORB O-Ring Adapter 2pcs — 6061-T6 Aluminium, NBR O-Ring, 1500 PSI

EVIL ENERGY's 6AN flare to AN8 ORB male O-ring adapter is a compact, high-pressure aluminum fitting that converts a 6AN flare connection to an AN8 ORB O-ring port for fuel and oil systems.

This two-piece adapter set is engineered to join different thread standards—9/16-18 UNF (6AN) flare to 3/4-16 UNF (AN8 ORB)—while delivering a reliable, reusable seal. Built from 6061-T6 aluminum and using an NBR rubber O-ring at the ORB end, these fittings are suitable for many automotive fluid components where space and interchangeability matter. The adapter is intended for non-medical mechanical use such as fuel rails, pumps, pressure regulators and oil coolers.

How does this adapter ensure a leak-resistant connection?

The AN8 side seals with a dedicated O-ring while the 6AN side relies on the standard 37-degree flare seating. Together they form two different sealing methods—mechanical flare compression and elastomeric O-ring contact—so you get a dependable junction between dissimilar ports. Proper torque and a good O-ring are key for consistent performance.

• 6AN flare: seals via 37° flare face contact.
• AN8 ORB: seals on NBR O-ring compression in the port.
• Use recommended torque values and inspect O-ring before installation.

What operating pressures and temperatures can these fittings handle?

The adapter is rated to operate up to 1500 PSI, making it suitable for many fuel and oil system applications short of high-pressure direct-injection fuel rails. Temperature limits are broad: the adapter body tolerates from -65°F to 252°F, and the NBR O-ring remains effective roughly between -4°F and 392°F, covering common under-hood environments.

• Working pressure: up to 1500 PSI.
• Aluminum body range: -65°F to 252°F.
• NBR O-ring range: -4°F to 392°F; check chemical compatibility.

Which systems and components are these adapters compatible with?

These adapters are designed for use where a 6AN flare line needs to attach to an AN8 ORB port. Typical uses include aftermarket fuel systems and oil plumbing. They are not universal for every chemical or pressure scenario—verify thread type and fluid compatibility before installation.

• Common applications: fuel rails, fuel pumps, pressure regulators, fuel filters, oil coolers.
• Thread sizing: 6AN (9/16-18 UNF) to AN8 ORB (3/4-16 UNF).
• Confirm port type and O-ring groove on the receiving component.

How should I install and maintain these adapters for longest life?

Installation requires clean mating surfaces, the right O-ring seating, and controlled torque to avoid thread damage or O-ring extrusion. Periodic inspection of the O-ring for nicks or hardening and re-torquing after initial use will reduce risk of leaks. Replace the O-ring if exposed to incompatible fuels or visible wear.

• Clean threads and sealing faces before assembly.
• Lubricate O-ring with compatible lubricant; avoid petroleum on some elastomers unless confirmed compatible.
• Torque to manufacturer or commonly accepted AN/ORB limits; inspect after first run.

Who is this for: This 2-piece EVIL ENERGY adapter is for mechanics, tuners and DIY automotive enthusiasts who need to adapt a 6AN flare hose to an AN8 ORB port without fabricating new lines. It suits retrofits, custom fuel or oil plumbing, and maintenance tasks where strong mechanical performance, corrosion-resistant aluminum, and a reusable O-ring seal are required.