SharkBite U518LF No-Lead Push-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$9.18
SharkBite U518LF No-Lead Push-Fit End Stop, Brass

SharkBite U518LF No-Lead Push-Fit End Stop, Brass

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Model: U518LF

In Stock (leaves warehouse same day if ordered before 3pm ET)

$9.18
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SharkBite U518LF No-Lead Push-Fit End Stop, Brass

The SharkBite U518LF is a push-fit end stop designed to cap and terminate a run of copper, CTS CPVC, or PEX tubing without soldering, clamps, unions, or glue. Available in 3/4" and 1" trade sizes, this brass fitting lets plumbers instantly close off a dead-end line during rough-in work. Insert the pipe end and the internal stainless steel teeth grip the tubing while an O-ring compresses to form a seal, capping the line for a clean, no-lead termination point behind the wall. Every size in this family is certified to 200 PSI and 200 degrees F (93 degrees C), making it a reliable choice for rough-in plumbing where a fast, tool-free stop is needed on any of the three common tube materials.

Key Features

  • Trade Size: Available in 3/4" and 1" sizes for capping copper, CTS CPVC, or PEX tubing runs.
  • Push-Fit Connection: Instant push-fit design for increased ease-of-use with no soldering, clamps, unions, or glue required.
  • Universal Compatibility: Fits copper tubing, CTS CPVC, and PEX, and can connect all three types in any combination elsewhere in the system.
  • Pressure & Temperature Rating: Certified to 200 PSI and 200 degrees F (93 degrees C) for demanding rough-in applications across both sizes.
  • Reusable Design: Disassembles quickly using the standard SharkBite disconnect tool, so the fitting can be removed and reused elsewhere.
  • Rotatable After Assembly: Can be rotated after installation for easier positioning in tight spaces behind walls or under floors.
  • No-Lead Construction: Lead-free brass body suitable for potable water rough-in work.

Technical Specifications

  • Trade Size: 3/4" and 1"
  • Connection Type: Push-Fit
  • Pressure Rating: 200 PSI
  • Temperature Rating: 200 degrees F (93 degrees C)
  • Material: Brass, No-Lead
  • Refer to manufacturer spec sheet for complete technical specifications.

Typical Applications

  • Capping Unused Branch Lines in Residential Rough-In Plumbing
  • Terminating Copper, CPVC, or PEX Runs Without Soldering
  • Pressure Testing Dead-End Lines Before Fixture Installation
  • Renovation Work Where Access Is Limited
  • Quick Repairs Requiring Tool-Free Disassembly and Reuse

Why SharkBite?

SharkBite fittings use stainless steel teeth and a compression O-ring to deliver a dependable push-fit seal without soldering, clamps, unions, or glue, and the U518LF end stop carries that same no-lead, 200 PSI / 200 degrees F rated construction into a simple line-capping fitting available in 3/4" and 1" sizes. Because it can be disassembled with the standard disconnect tool and rotated after installation, plumbers get a fast, reusable solution for terminating copper, CPVC, or PEX runs in tight rough-in spaces.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
SHK-20260923
Product Type:
End Stop
Connection Type:
Push-Fit
Department:
Plumbing
Product Subgroup:
Caps
Product Material:
Brass
Product Group:
Plumbing Fittings

SharkBite U518LF – Frequently Asked Questions

1) Will a SharkBite U518LF end stop work on copper, CPVC, and PEX, or do I need a different cap for each material?
One fitting covers all three. The U518LF push-fit end stop accepts copper tubing, CTS CPVC, and PEX in the same socket, so you don't need to stock a separate cap per material. No solder, clamps, unions, or glue involved - push the tube in and the stainless steel teeth grip while the O-ring seals.
2) Can I use this brass end stop to cap a line for a pressure test and then reuse it?
Yes, that's a normal use for it. The U518LF caps a dead-end line for pressure testing before fixtures go in, and it disassembles with the standard SharkBite disconnect tool so you can pull it off and reuse the fitting elsewhere. It's rated to 200 PSI, well above typical rough-in test pressures.
3) I need to cap a stub-out in a tight wall cavity with no room for a torch. Will this work?
That's exactly the situation it's built for. No flame, no solder, no glue - the cap pushes straight on, and it can be rotated after assembly so you can position it in a cramped bay or under a floor without breaking the seal. Renovation work with limited access is a listed application.
4) What sizes does the SharkBite push-fit end stop come in, and what are the part numbers?
Two trade sizes: 3/4 inch is part number U518LF and 1 inch is U520LF. Both are no-lead brass and both carry the same 200 PSI / 200 degrees F rating, so the only decision is tube size.
5) Is this end stop safe for potable water lines?
The body is no-lead brass and the fitting is intended for potable water rough-in work. That's the point of the LF in U518LF - lead-free construction for drinking water systems.
6) Can the SharkBite end stop handle hot water lines, or is it cold only?
Both. It's certified to 200 degrees F (93 degrees C) at 200 PSI, which covers domestic hot water as well as cold. Same rating on the 3/4 inch and the 1 inch.
7) Do I need any tools or extra parts to install a SharkBite U518LF end stop?
Nothing to install it - the push-fit connection seals on insertion, so no soldering, clamps, unions, or glue. The one thing worth having on the truck is the standard SharkBite disconnect tool, which is what you need if you ever want to remove the cap and reuse it.
8) What's the difference between a push-fit end stop and just using a cap with a coupling?
An end stop is a single fitting that terminates the tube - one push and the run is closed. Going the coupling route means two joints, two potential leak points, and on copper or CPVC usually a torch or solvent cement. The U518LF closes a 3/4 inch or 1 inch line in one piece, on copper, CPVC, or PEX, and comes back off with the disconnect tool if the line gets extended later.
How fast can I get the SharkBite U518LF delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SharkBite U518LF come with a warranty?
Absolutely. The SharkBite U518LF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SharkBite U518LF?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SharkBite U518LF from ZenSupply?
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