Description

Superlok Tube Plug - 1/4", 3/8", 1/2"

The Superlok Tube Plug - 1/4", 3/8", 1/2" is a precision tube fitting component manufactured under strict quality control using high-quality raw materials. Available in 1/4", 3/8", and 1/2" sizes, it is designed for reliable tube fitting applications where secure connections and consistent performance are important.

Superlok tube fittings are manufactured with rigorous testing and quality assurance procedures, with Positive Material Identification (PMI) supporting material verification. Superlok fittings are designed to tighten easily and provide leak-free performance under shock, vibration, and temperature cycling.

The fitting design incorporates an exceptional internal surface finish intended to reduce particle entrapment and potential contamination while supporting the flow of liquids and gases. Superlok instrumentation valves and fittings are specified across demanding industrial markets including automotive, aerospace, semiconductor, shipbuilding, and petrochemical applications.

Superlok Tube Plug 1/4", 3/8" & 1/2" Precision Tube Fitting Leak-Free Performance

Multiple Sizes: Available in 1/4", 3/8", and 1/2" options for different tube fitting requirements.

Reliable Connection: Superlok fittings are designed for easy tightening and leak-free performance under shock, vibration, and temperature cycling.

Quality Controlled: Produced using strict quality control, rigorous testing, and quality assurance procedures.

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 choose the Superlok Tube Plug?

Precision manufacturing — produced under strict quality control and tight manufacturing tolerances.
Reliable fitting performance — designed to tighten easily and provide leak-free performance under shock, vibration, and temperature cycling.
Quality assurance — Superlok products are supported by rigorous testing and quality assurance procedures.
Enhanced internal finish — the exceptional internal surface finish helps reduce particle entrapment and potential contamination while supporting liquid and gas flow.
Multiple size options — available in 1/4", 3/8", and 1/2" sizes to support different tube fitting requirements.

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Get product guidance, application support, and compatibility information for your tube fitting requirements.

Call 734-855-4890

Technical Specifications

Specification	Details
Product Name	Superlok Tube Plug - 1/4", 3/8", 1/2"
Brand	Superlok
Product Type	Tube Fitting
Fitting Category	Tube Plug
Available Sizes	1/4", 3/8", 1/2"
Connection Application	Tube Fitting Applications
Primary Function	Tube Connection and Plugging
Sealing Performance	Designed for Leak-Free Performance
Tightening	Designed for Easy Tightening
Performance Conditions	Shock, Vibration, and Temperature Cycling
Internal Surface Finish	Exceptional Internal Surface Finish
Flow Media	Liquids and Gases
Material Verification	Positive Material Identification (PMI)
Quality Control	Strict Quality Control
Testing	Rigorous Testing and Quality Assurance
Manufacturing	Precision Manufacturing to Tight Tolerances
Contamination Control	Designed to Reduce Particle Entrapment and Potential Contamination
Industrial Markets	Automotive, Aerospace, Semiconductor, Shipbuilding, and Petrochemical
Product Application	Demanding Industrial and Instrumentation Applications

Popular Industries & Use Cases

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Custom Solutions

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Custom Request Consulting

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FAQ

What sizes are available for the Superlok Tube Plug - 1/4", 3/8", 1/2"?

The Superlok Tube Plug is available in 1/4", 3/8", and 1/2" size options.

What is the Superlok Tube Plug designed for?

The Superlok Tube Plug is designed for tube fitting applications requiring a reliable connection and plugging solution. It is part of the Superlok tube fitting product family.

How does the Superlok Tube Plug perform under demanding conditions?

Superlok tube fittings are designed to tighten easily and provide leak-free performance under shock, vibration, and temperature cycling. They are manufactured using strict quality control, testing, and quality assurance procedures.

What industries use Superlok tube fittings?

Superlok instrumentation valves and fittings are specified across markets including automotive, aerospace, semiconductor, shipbuilding, and petrochemical industries.

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.

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Specifications

Brand:	Superlok
Material:	304 Stainless
Connection:	Compression
Warranty Term:	1 Year
Return Window:	30 Days
Lead Time:	1-3 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