Collins-Oliver
Tube Fittings
Need the Right Fitting to Keep Your System Running? You've Come to the Right Place.
When your hydraulic systems or pneumatic systems go down, every minute counts. At Collins-Oliver, we stock thousands of tube fittings from the brands you trust, ready for same-day pickup or fast nationwide shipping.
Whether you're looking for compression fittings, push-to-connect fittings, or specialty instrumentation fittings, we've got the inventory, expertise, and speed to get you back online fast.
Tube Fittings
Complete Selection of Compression and Connection Fittings
Looking for leak-proof connections that install fast and hold tight?
We carry a full range of compression fittings, ferrule fittings, and bite-type fittings designed for high-pressure applications. Need quick connect fittings or quick-connect fittings for tool-free installation? We stock push-to-connect fittings, quick connect couplings, and quick disconnect fittings across multiple sizes and standards.
Our inventory includes:
- Ferrule fittings and individual ferrules for precision sealing
- Bite type fittings for secure, vibration-resistant connections
- Union fittings and unions for easy assembly and maintenance
- Swivel fittings for flexible positioning
- Coupling fittings, couplings, and tube couplings for straight runs
Swagelok SS-600-SET 316 Stainless Steel Ferrule Set (1 Front Ferrule / 1 Back Ferrule) for 3/8 in. Tube Fitting
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Superlok SUT-12 Union Tee Tube Fitting, 3/4 in. OD, 316 Stainless Steel
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Parker 8 ALOK-316-SET A-LOK Ferrule Set, 1/2" Tube OD, 316 SS
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Parker 8ET8-316 A-LOK Union Tee, 1/2" Tube OD, 316 SS
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Swagelok SS-1210-6-8 Stainless Steel Reducing Union, 3/4 in. x 1/2 in. Tube OD
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Swagelok SS-810-61 Stainless Steel Bulkhead Union, 1/2 in. Tube OD
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Swagelok SS-401-PC Stainless Steel Port Connector, 1/4 in. Tube OD
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Swagelok SS-810-R-4 Stainless Steel Reducer, 1/2 in. Tube OD x 1/4 in. Swagelok Tube Adapter
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Swagelok SS-600-6-4 Stainless Steel Reducing Union, 3/8 in. x 1/4 in. Tube OD
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Swagelok SS-400-5-2 Stainless Steel 45° Male Elbow, 1/4 in. Tube OD x 1/8 in. Male NPT
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Swagelok SS-400-8-4 Stainless Steel Female Elbow, 1/4 in. Tube OD x 1/4 in. Female NPT
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Swagelok SS-400-2-4 Stainless Steel Male Elbow, 1/4 in. Tube OD x 1/4 in. Male NPT
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Swagelok SS-600-9 Stainless Steel Union Elbow, 3/8 in. Tube OD
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Swagelok SS-400-9 Stainless Steel Union Elbow, 1/4 in. Tube OD
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Swagelok SS-600-3-6-4 Stainless Steel Reducing Union Tee, 3/8 in. x 3/8 in. x 1/4 in. Tube OD
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Swagelok SS-400-3TFT Stainless Steel Female Run Tee, 1/4 in. Tube OD x 1/8 in. Female NPT x 1/4 in. Tube OD
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Swagelok SS-600-3TTM Stainless Steel Male Branch Tee, 3/8 in. Tube OD x 3/8 in. Tube OD x 1/4 in. Male NPT
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Swagelok SS-600-3-6TMT Stainless Steel Male Run Tee, 3/8 in. Tube OD x 3/8 in. Male NPT x 3/8 in. Tube OD
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Swagelok SS-400-3 Stainless Steel Union Tee, 1/4 in. Tube OD
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Swagelok SS-810-R-6 Tube Fitting Reducer, 1/2 in. x 3/8 in., 316 Stainless Steel
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Swagelok SS-QM2-S-200 Miniature Quick Connect Stem, 316 Stainless Steel
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Swagelok FJ Series Flexible Metal Hose (316L Core, 316 SS End Connections)
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Swagelok SS-810-3 Union Tee
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DK-LOK DT Union Tee
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DK-LOK DU-B Union (Brass)
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DK-LOK DMCT-B Bored-Through Male Connector (Brass)
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DK-LOK DMCT-N-S Bored-Through Male Connector
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DK-LOK DCW-M-P-S Male Pipe Weld Connector
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DK-LOK DLW-P-S Male Pipe Weld Elbow
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DK-LOK DLSW-B Tube Socket Weld Elbow (Brass)
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DK-LOK DTBM-N-S Male Branch Tee
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DK-LOK DTRM-N-S Male Run Tee
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DK-LOK DMCB-N-S Bulkhead Male Connector
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DK-LOK DUBA-S AN Bulkhead Union
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DK-LOK DLM-N-B Male Elbow (90°, Brass)
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DK-LOK DLM-N-S Male Elbow (90°)
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DK-LOK DUR-B Reducing Union (Brass)
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DK-LOK DMC-G-B Male Connector (Gasket Seal, Brass)
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DK-LOK DLBM-N-S 45° Male Elbow
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DK-LOK DLBM-N-B Male Elbow (45°, Brass)
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DK-LOK DX-B Union Cross (Brass)
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DK-LOK DAA-S AN Adapter
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DK-LOK DMAA-S Male AN Adapter
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DK-LOK DUA-S AN Union
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DK-LOK DL-B Union Elbow (90°, Brass)
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DK-LOK DUR Reducing Union
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DK-LOK DUB Bulkhead Union
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DK-LOK DUB-B Bulkhead Union (Brass)
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DK-LOK DMC-N-S Male Connector
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DK-LOK DL Union Elbow (90°)
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DK-LOK DX Union Cross
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DK-LOK DT-B Union Tee (Brass)
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Hy-Lok H-SSB10T-8N-S316 Female Weld Connector
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Swagelok SS-810-SET Replacement Ferrule Set
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Swagelok SS-810-6 Tube Union
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Swagelok SS-810-9 90-Degree Tube Union Elbow
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Swagelok SS-810-1-8 Tube-to-Male NPT Connector
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Threaded Fittings for Every Standard
Need NPT? BSP? Metric? We've got them all in stock.
From threaded fittings and threaded tube fittings to format-specific options like NPT fittings, BSP fittings, DIN fittings, JIC fittings, SAE fittings, and metric fittings, Collins-Oliver carries the threads you need to match your system perfectly.
We also stock:
- AN fittings for aerospace and high-performance applications
- Metric tube fittings for international equipment
- Flare fittings and flared fittings for secure mechanical connections
- Pipe fittings and plumbing fittings for fluid transfer systems
Elbows, Tees, Crosses, and Directional Fittings
Need to change direction or split a line?
We carry elbow fittings, elbows, tee fittings, tees, cross fittings, and crosses in every configuration. Whether you need a 90-degree turn, a branch connection, or a multi-port junction, we've got the right fitting in the right material.
Our directional fittings include:
- Elbow fittings (45°, 90°, and custom angles)
- Tee fittings for branch connections
- Cross fittings and crosses for four-way junctions
- Reducer fittings, reducers, and adapter fittings to transition between sizes
Adapters, Connectors, and Transition Fittings
Connecting different sizes, threads, or materials? We've got the adapter.
Our extensive selection of adapters, adapter fittings, connectors, connector fittings, tube connectors, and tube adapters lets you bridge incompatible systems with confidence.
We stock:
- Bulkhead fittings for panel mounting
- Nipple fittings, nipple, and swage nipples for extensions
- Bushings for thread size reduction
- Banjo fittings for compact, low-profile connections
Caps, Plugs, and System Closures
Need to seal off a port or protect threads during maintenance?
We carry caps, cap fittings, plugs, plug fittings, and caps and plugs in multiple materials and thread types. Perfect for testing, storage, or temporary closures.
Material-Specific Tube Fittings
The right material makes all the difference.
Collins-Oliver stocks tube fittings in every material your application demands:
- Stainless steel fittings and stainless steel tube fittings for corrosion resistance
- Brass fittings and brass tube fittings for cost-effective durability
- Plastic tube fittings, plastic fittings, and nylon fittings for lightweight systems
- Nylon tube fittings for chemical resistance
- PTFE fittings and PTFE tube fittings for high-purity applications
- PVC fittings, PVC tube fittings, and PVC tubing for drainage and chemical systems
- Metal tube fittings for industrial strength
Brand-Name Fittings from Trusted Manufacturers
Why settle for generic when you can get the original?
We carry new and new surplus fittings from the industry's most respected names:
- Swagelok fittings and Swagelok components
- Parker fittings for hydraulic and pneumatic systems
- Hose fittings and barbed fittings for flexible connections
- Barb fittings for secure hose attachment
Specialty and High-Performance Fittings
Got a unique application or high-purity requirement?
We stock specialty fittings designed for demanding environments:
- Instrumentation fittings for precision control systems
- O-ring face seal fittings for leak-free, high-pressure connections
- Sanitary fittings for food, pharmaceutical, and biotech applications
- Weld fittings and welded tube fittings for permanent installations
- Flange fittings and flanges for large-bore connections
- Clamp fittings and tube clamps for secure mounting
Sealing Components and System Accessories
A fitting is only as good as its seal.
We carry all the sealing components you need:
- O-rings and o-ring seals in multiple sizes and materials
- Sealing rings for metal-to-metal connections
- Seals for hydraulic and pneumatic systems
- Ferrule and ferrules for compression fitting assemblies
- Nut and hardware components
- Polyethylene tubing for flexible runs
Hydraulic and Pneumatic System Fittings
Powering your equipment? We've got the fittings to handle the pressure.
Collins-Oliver specializes in hydraulic fittings and pneumatic fittings designed for high-pressure fluid power systems. From hydraulic systems to pneumatic systems, we stock the connections that keep power transmission systems running safely and efficiently.
Industrial Fittings for Every Application
Whatever your industry, we've got the industrial fittings you need.
Our industrial fittings and industrial tube fittings serve:
- Manufacturing plants
- Chemical processing facilities
- Oil and gas operations
- Food and beverage production
- Power generation
- Water treatment
Why Choose Collins-Oliver for Tube Fittings?
What's the best way to get the right fitting fast?
Need Help Finding the Right Fitting?
Can't identify that mystery fitting? Not sure which type you need?
Frequently Asked Questions
All Your Questions Answered
Can I get Swagelok or Parker fittings same-day?
Yes. We carry Swagelok fittings, Parker fittings, and other premium brands in stock for immediate pickup.
Do you ship tube fittings nationwide?
Yes. Local customers get same-day pickup. Out-of-state customers get fast, reliable shipping.
Collins-Oliver
Ready to Get the Tube Fittings You Need Today?
Don't waste time searching multiple suppliers.
Contact Collins-Oliver now for expert advice, deep inventory, and same-day solutions on compression fittings, push-to-connect fittings, hydraulic fittings, and every other tube fitting your system demands.
Call us, visit our Baton Rouge location, or request a quote online. We're ready when you are.