Shop High Pressure Adapters, Female HP x Female HP

The High Pressure Female to High Pressure Female OneXtreme Adapters are ultra-high-pressure fittings designed to connect two coned-and-threaded high pressure components in critical fluid power and instrumentation systems. These adapters utilize a 60-degree cone and thread connection to create a reliable metal-to-metal seal capable of handling working pressures up to 60,000 psi (4136 bar), making them ideal for applications such as oil and gas, chemical injection, test systems, and high-pressure hydraulics. 

Manufactured from cold worked 316 stainless steel, these fittings deliver exceptional strength, fatigue resistance, and corrosion protection in harsh environments. OneXtreme high pressure adapters are precision machined for consistent sealing performance and are available in special materials upon request to meet unique application requirements. 

NOTE: Proper installation, torque, and cone/thread compatibility are critical. Mismatched components, damaged sealing surfaces, or exceeding pressure ratings can result in leaks or catastrophic failure. Always verify system requirements and follow recommended assembly practices before use.

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High Pressure Adapters

Up to 60,000psi (varies by size)

1/4" to 9/16" 

316 Stainless Steel (Customs available upon Request)

Click HERE to view the OneXtreme Catalog

Click HERE to view the entire High Pressure MHP-FHP Collection

Series 302, Male HP x Female HP

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 HP Side Female HP Side Pressure Rating Lead Time Price
X4HF04HF60-BH-K 0.25 (1/4") 0.25 (1/4") 60000 3 Days $89.14
X4HF04HF60-K 0.25 (1/4") 0.25 (1/4") 60000 1-3 Weeks $50.88
X4HF06HF60-K 0.25 (1/4") 0.75 (3/4") 60000 3 Days $69.86
X4HF09HF60-K 0.25 (1/4") 0.5625 (9/16") 60000 3 Days $84.15
X6HF06HF60-BH-K 0.375 (3/8") 0.75 (3/4") 60000 1-3 Weeks $122.98
X6HF06HF60-K 0.375 (3/8") 0.75 (3/4") 60000 1-3 Weeks $61.15
X6HF09HF60-K 0.375 (3/8") 0.5625 (9/16") 60000 3 Days $94.52
X9HF09HF60-BH-K 0.5625 (9/16") 0.5625 (9/16") 60000 3 Days $158.22
X9HF09HF60-K 0.5625 (9/16") 0.5625 (9/16") 60000 1-3 Weeks $88.06
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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.