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1/8" | Brass Compression Union | 10ct - 4LifetimeLines
1/8" | Brass Compression Union | 10ct - 4LifetimeLines

1/8" Brass Compression Union | 10ct

$8.99

SKU: LTCF18

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1/8" Brass Compression Union

The 4LifetimeLines® 1/8″ Brass Compression Union delivers a leak-proof, metal-to-metal seal without flaring—ideal for brake, fuel, oil, or hydraulic hard-line joins. Machined from dezincification-resistant brass, this union stands up to winter salt, moisture, and chemical exposure, ensuring lasting reliability in harsh conditions.

Key Benefits

Universal Compatibility: Works on 1/8″ steel, copper-nickel, copper-coated steel, PVF-coated, and stainless-steel tubing.

Corrosion Resistance: Brass alloy resists pitting and corrosion for maintenance-free performance.

Compression Seal: Creates a permanent, leak-free connection—no thread sealant or flare tool required.

Winter-Ready Durability: Withstands salted roads and freeze/thaw cycles without degradation.

Lifetime Warranty: Backed by 4LifetimeLines® for confidence in every fitting.

Installation & Usage

Cut & Deburr: Trim tubing squarely and remove all burrs inside and out.

Assemble: Slide the brass ferrule onto the tube, then thread the union nut onto your mating port.

Torque to Seal: Tighten to the specified torque— the ferrule bites into the tube for a tight, permanent seal.

Inspect: Pressurize the system and confirm zero leaks before full operation.

Ready for a corrosion-proof, leak-free union?
Add the 1/8″ Brass Compression Union to your cart now and complete your hard-line joins with confidence.

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Not sure where to start? No problem. From automotive lubricants to brake lubricants and maintenance solutions, we’re here to help you choose the right products for your vehicle and your project.
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Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

Lifetime Quality, Covered — for Life

Zero Risk, Maximum Confidence

Built to Endure. Guaranteed to Perform.

One-Time Purchase. Lifetime Assurance.

FREE SHIPPING

Spend $50. We Cover the Rest.

BUILT TO ENDURE

No Weak Points. No Compromises.

LIFETIME WARRANTY

One Purchase. Lifetime Coverage.

TRADE FRIENDLY

Tax-Exempt Pricing for Qualified Buyers

The 4Lifetime Difference

Engineered to Last. Backed for Life.

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Engineered to Last. Backed for Life.

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When we say lifetime warranty, we mean it. Our products are built to endure & we stand behind them.

No Corners Cut. Ever.

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No Corners Cut. Ever.

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Quality materials. Proven craftsmanship.
Built with materials and workmanship we trust. No shortcuts.

A Smart, Risk-Free Buy

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A Smart, Risk-Free Buy

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Buy once. Be done.
This isn’t a temporary fix — it’s a long-term solution. Built-in confidence. Zero guesswork.

Straightforward. No Fine Print.

Straightforward. No Fine Print.

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What you see is what you get.
Clear terms. Honest coverage. No hidden clauses. No loopholes. No runaround.

Backed for the Long Haul

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Backed for the Long Haul

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We stand behind every product.
As long as you own it, we’ve got your back.

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100+ 5 star reviews

“.. easy to get the part you need, when you need it.”

Jackson

Great Experience

Great received day early good product this is 3rd time doing business with 4LifetimeLines
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Marion K.

Happy Customer

Great product!! I’ve ordered these before and they are great quality! I’ll be back again.
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Jimmy L.

Excellent

Excellent product shipped quickly and inexpensively. I will be ordering again.
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Will S.

Ideal Products

Ideal stuff for fabricating brake lines brake lines at a very good price.Kit very well covers the materials for doing the whole brake line system.
T
Thomas J.

Reasonable price and fast shipping!

I'll be back again!
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Robert E.

Great Seller!

Great seller to deal with. Fast shipping and great products.
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Mike G.

Great products, competitive prices, and fast shipping. Communication is also top notch.

This was my first purchase and the experience has been fantastic. Great products, competitive prices, and fast shipping. Communication is also top notch.
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David B.

Great products, competitive prices, and fast shipping.

This was my first purchase and the experience has been fantastic. Great products, competitive prices, and fast shipping. Communication is also top notch.
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Peter S.