Description

Superlok O.D Union - Various Sizes - 1/4", 3/8", 1/2"

The Superlok O.D Union is a precision-manufactured tube fitting designed to provide reliable connections across demanding industrial applications. Available in 1/4", 3/8", and 1/2" sizes, this O.D. union is produced under strict quality control using high-quality raw materials and rigorous manufacturing procedures.

Superlok Tube Fittings are designed to tighten easily and provide leak-free performance under shock, vibration, and temperature cycling. The fittings feature an exceptional internal surface finish that helps reduce particle entrapment and potential contamination while supporting efficient flow of liquids and gases.

The Superlok O.D Union uses a four-piece precision construction consisting of a body, front ferrule, rear ferrule, and nut. Each component is manufactured to strict tolerances under tight quality control measures, making the fitting suitable for demanding conditions across automotive, aerospace, semiconductor, shipbuilding, petrochemical, and other industrial markets.

1/4", 3/8", 1/2" Sizes O.D. Union 4-Piece Construction Precision Manufactured

Leak-Free Performance: designed to tighten easily and maintain reliable performance under shock, vibration, and temperature cycling.

Precision Construction: four precision components are manufactured to strict tolerances for dependable industrial service.

Exceptional Internal Finish: helps reduce particle entrapment and potential contamination while supporting the flow of liquids and gases.

Why buy from USA Lab

Expert Support
Engineers & technicians on staff.

Quality First
Tested and trusted products.

Fast Fulfillment
Nationwide 1-2 day shipping.

Warranty & Parts
US-based service & spares.

Why this Superlok O.D Union?

Reliable tube connection — designed for dependable joining of tubing in demanding industrial applications.
Leak-free performance — tightens easily and is designed to maintain reliable sealing under shock, vibration, and temperature cycling.
Multiple size options — available in 1/4", 3/8", and 1/2" O.D. sizes for different tubing requirements.
Four-piece precision construction — consists of a body, front ferrule, rear ferrule, and nut manufactured to strict tolerances.
Clean internal surface finish — helps reduce particle entrapment and potential contamination while supporting liquid and gas flow.

Talk to an expert

Get product guidance, application support, and sizing information for your Superlok O.D Union requirements.

Call 734-855-4890

Technical Specifications

Specification	Details
Product Name	Superlok O.D Union - Various Sizes - 1/4", 3/8", 1/2"
Brand	Superlok
Product Type	Tube Fitting
Fitting Style	O.D. Union
Available Size 1	1/4"
Available Size 2	3/8"
Available Size 3	1/2"
Connection Type	O.D. Tube Union
Construction	Four Precision Parts
Component 1	Body
Component 2	Front Ferrule
Component 3	Rear Ferrule
Component 4	Nut
Manufacturing	Precision Manufactured
Manufacturing Tolerance	Very Strict Tolerances
Quality Control	Strict Quality Control Measures
Material Quality	High-Quality Raw Materials
Material Verification	Positive Material Identification (PMI)
Testing and Performance	Rigorous Testing; Leak-Free Performance Under Shock, Vibration, and Temperature Cycling

Popular Industries & Use Cases

Industrial Instrumentation Semiconductor Petrochemical Automotive & Aerospace

Business Solutions & Procurement

Programs & Terms

Exclusive options for businesses and academics.

Apply for Net Terms Academic Discount

Documentation & Compliance

Keep purchasing streamlined and compliant.

Request a Quote Tax Exemption

Custom Solutions

Tailored equipment and integration help.

Custom Request Consulting

Talk to Sales

We’ll help identify the right Superlok fitting for your application.

Call 734-855-4890 Email Sales/Support

FAQ

What sizes are available for the Superlok O.D Union?

The Superlok O.D Union is available in 1/4", 3/8", and 1/2" sizes to accommodate different tubing requirements.

What type of fitting is the Superlok O.D Union?

The Superlok O.D Union is an O.D. tube union designed to provide a reliable connection for tubing in demanding industrial applications.

How is the Superlok O.D Union constructed?

The Superlok O.D Union consists of four precision parts: a body, front ferrule, rear ferrule, and nut. These components are manufactured to very strict tolerances under tight quality control measures.

What applications are suitable for the Superlok O.D Union?

The Superlok O.D Union is suitable for demanding industrial applications and is specified across markets including automotive, aerospace, semiconductor, shipbuilding, petrochemical, and other industrial environments.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.

Need Support?

We’ll get you answers fast.

Call 734-855-4890

Specifications

Brand:	Superlok
Thread:	O.D.
Lead Time:	1–3 Days
Warranty Term:	1 Year
Return Window:	30 Days

Warranty

Fittings and steel do NOT carry any warranty. Fittings and steel items with a defect or other issue must be identified within 30 days of arrival and USA Lab MUST be contacted. After 30 days, there will be no replacements sent for fittings or steel items with a defect or issue. Cross threading, misuse, improper storage, or improper care of fittings/steel are considered user error and are not covered under warranty.

Shipping & Returns

1–3 Business Days Standard Processing

Return Policy ↗ Varies by Product Warranty Policy ↗ Varies by Product

3 Days to Claim Inspect on Arrival

Shipping

Orders ship within 1–3 business days after payment clears. We ship Monday through Friday via UPS, USPS, and freight carriers.
Freight items (crated, hazmat, dropship, or special packaging) can take 1–5 business days to ship.
Expedited shipping speeds up transit, not processing. Contact us for true rush orders.
PO Box addresses ship USPS. Alcohols, chemicals, and hazmat cannot ship to a PO Box.

Full Shipping Policy

Delivery & Damage Claims

Inspect every shipment on arrival. Claims must be filed within 3 business days.
Visible damage? Refuse the delivery and have the driver document it. We will file the claim and ship a replacement.
Concealed damage: contact us within 2 days with photos of the packaging and item. Keep all packing materials.
Freight services (liftgate, residential, inside delivery) are the customer's responsibility to select for their location.

Damage & Freight Details

Returns

USA Lab branded products are returnable within 30 days of order date with prior authorization. Email us before sending anything back.
Solvents, chemicals, and consumables are not returnable once shipped. Custom and made-to-order items are final sale.
Unused items in original packaging carry a 15% restocking fee. Defective items ship back on us.
Items showing any signs of use, wear, contamination, or modification are not eligible for return.
Glassware damage must be reported within 3 business days of delivery for replacement or refund.

Full Return Policy

Custom & Made-to-Order Items

Customized and made-to-order products are final sale and not eligible for return under any circumstances.
This includes ductless fume hoods, configured tanks and reactors, and any item built to your specifications.
These products are manufactured specifically for your application. Confirm sizing, voltage, and configuration with our team before ordering.
Damage claim coverage still applies. Inspect on arrival and report issues within 3 business days.

Return Eligibility Details

Warranty

USA Lab products are covered against manufacturing defects for up to 3 years, depending on product line.
1 year: chillers, heaters, rotovaps, reactors, vacuum ovens, mixers, and most equipment. 2 years: UVP vacuum pumps. 3 years: scientific freeze dryers.
Wear items (glassware, gaskets, heating elements, sensors) and fittings/steel are not covered. Report defects within 30 days (3 days for glass).
Non–USA Lab brands are covered by their manufacturer's warranty. See the product's Warranty tab.

Full Warranty Policy

International Orders

Import duties, taxes, VAT, and brokerage fees are not collected by USA Lab and are the receiver's responsibility.
Verify your country's customs charges and import restrictions before ordering.
Refused or unclaimed international shipments are refunded minus shipping and a 15% restocking fee.
International orders are generally non-returnable. Damaged items must be reported within 3 business days.

International Guidelines