Shop High Pressure Adapters, Female JIC x Female JIC

The JIC Female to JIC Female OneXtreme Adapters are precision-engineered fittings designed to connect two JIC 37° male flare components in hydraulic and fluid power systems requiring reliable, leak-free performance. JIC (Joint Industry Council) fittings utilize a 37-degree cone seat to create a metal-to-metal seal, eliminating the need for additional sealing compounds and providing consistent performance in high-pressure applications up to 15,000 psi (689 bar).


Manufactured from cold worked 316 stainless steel, these adapters offer exceptional strength, corrosion resistance, and durability in demanding environments such as industrial, mobile equipment, and chemical processing systems. OneXtreme JIC adapters are machined for precise fit and repeatable sealing integrity, with special materials available upon request to meet specific application requirements.

NOTE: Proper alignment and torque are critical. Over-tightening, misalignment, or using damaged flare surfaces can compromise the seal and lead to leaks or system failure. Always verify compatibility with mating components and adhere to recommended installation practices before use.

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High Pressure Adapters

Up to 10,000psi (varies by size)

1/4" to 1/2" 

316 Stainless Steel (Customs available upon Request)

Click HERE to view the OneXtreme Catalog

Click HERE to view the entire High Pressure FJIC-FJIC Collection

Series 502, FJIC x FJIC

Click on the model number in the chart below to view that adapter. 

ALL ADAPTERS SHOWN BELOW ARE 316 STAINLESS, MADE IN USA.

Product SKU Female JIC Side 1 Female JIC Side 2 Pressure Rating Lead Time Price
X4JF04JF15 0.25 (1/4") 0.25 (1/4") 15000 4-6 Weeks $54.02
X4JF06JF15 0.25 (1/4") 0.75 (3/4") 15000 4-6 Weeks $49.51
X4JF08JF15 0.25 (1/4") 0.5 (1/2") 15000 4-6 Weeks $39.34
X6JF08JF15 0.375 (3/8") 0.5 (1/2") 15000 4-6 Weeks $37.86
X12JF12JF10 0.75 (3/4") 0.75 (3/4") 10000 4-6 Weeks $80.23
X12JF16JF10 0.75 (3/4") 1 10000 4-6 Weeks $92.32
X16JF16JF10 1 1 10000 4-6 Weeks $90.12
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Technical Specs



Still need help? Give us a call at 281.941.2310 or email us at sales@onehydraulics.com for technical support.