Tube Fittings Division

Ensuring the safest, leak-free connections

Seal-Lok for CNG ORFS fittings passed the critical Bonfire Testing required for NGV refuse trucks, ensuring the safety and reliability of these proven leak-free fittings in the harshest conditions.

Download the Seal-Lok for CNG Bonfire Test summary

Parker FittingFinder


Easily identify the part numbers of the tube fittings and adapters that you need anytime and anywhere with our FittingFinder app. Dimensional information, CAD models, and a distributor locator are also included for your convenience, along with a competitive interchange tool. Parker FittingFinder is available in mobile, tablet and web versions.

Video: State-of-the-Art Metallurgical Lab


By investing in technologies that allow us to test products in conditions which mimic our customers’ applications, Parker continues to develop new products that convey fluid without leaks, while providing long-lasting component life without corrosion, even under the harshest conditions. These research and development capabilities enable our customers to offer products with market leading performance thereby increasing potential revenue. 

Looking for the most reliable leak-free ORFS fittings?


Parker Seal-Lok fittings offer the most reliable leak-free ORFS fitting connections in the industry thanks to our patented enhancements. O-ring fall out and pinch are eliminated with Trap-Seal, the trapezoidal shaped seal that improves retention and provides maximum assurance for leak-free connections. Steel Seal-Lok ORFS fittings come standard with our industry-leading ToughShield plating that protects against corrosion move than 10 times longer than SAE requirements.

Custom Manufacturing & Rapid Service Unit

Transform your unique connection needs into a finished part, and receive it in hand in as soon as 24 hours. Available in almost any size and configuration, our custom parts can be machined in steel, stainless steel, brass, and aluminum. Parker's Rapid Service Unit allows customers to decrease equipment downtime, reduce costs and increase production capabilities.

TFD techConnect

Technical articles focused on hydraulic fitting topics, industry trends, and helpful hints from Parker engineers. Articles include topics such as thread identification, sizing tube for hydraulic system efficiency, tips for routing and clamping tube lines, recommendations on reassembling fittings, and many other helpful topics. Written by engineers for engineers, TFD techConnect is the go-to resource for engineers.

ToughShield Plating

Parker's standard steel fittings and adapters with ToughShield (TS1000) plating deliver unmatched corrosion protection for your fitting connections at no additional cost. TS1000 not only far exceeds the SAE requirements, but it also outlasts the competition. This prolonged fitting life provides customers with decreased warranty replacement costs.  See how our fittings stand up to the competition and learn more about TS1000.



What's New


Seal-Lok Xtreme fittings take flat face seal design to extreme temperatures with our recently patented metal seal that is capable of temperatures ranging from -65°F to +450°F (-54°C to +232°C). Now the advantages of o-ring face seal (ORFS) fittings, such as vibration tolerance, zero clearance, ease of assembly and reassembly, are available for your extreme temperature systems.


TFD ToolSpec

Find the tube fabrication equipment and tooling part numbers that you need for the job with our TFD ToolSpec web app. For short-term and prototype projects, Tube fabrication equipment rentals are also available, and information is included on this site.

Complete Piping Solutions (CPS)

Combining the best non-welded piping system with a complete engineered piping services package, CPS offers your project incomparable assurance, efficiency and value.

CAD Models

Need a hydraulic tube fitting or adapter CAD model for your system design? View the vast library of CAD drawings available for download.

Catalogs and Support Materials

Browse our library of catalogs, product bulletins, equipment manuals, and equipment videos for the information that you need.

Find Your Nearest Distributor

Need a hydraulic tube fitting or adapter, or tube fabrication equipment and tooling? Parker’s worldwide distribution network makes it convenient to get the parts you need, either over the phone or at one of our Parker Stores. Locate the distributor nearest to you.

Contact Us

Parker Hannifin Corporation
Tube Fittings Division
3885 Gateway Blvd.
Columbus, OH  43228
Phone: 614-279-7070
Email: TFDmailbox@parker.com