Sioux Chief 649X Series Anneal...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$0.35
Sioux Chief 649X Series Annealed Copper PEX Crimp Rings

Sioux Chief 649X Series Annealed Copper PEX Crimp Rings

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Model: 649X3

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

$0.35
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Sioux Chief 649X Series Annealed Copper PEX Crimp Rings

The Sioux Chief 649X Series is a family of annealed copper PEX crimp rings covering the 649X3 and 649X4 models, available in 3/4" and 1" sizes to match PEX SDR9 tube. Each ring is made from pure, annealed copper and is engineered to form secure, code-compliant crimp connections between PEX SDR9 tube and PEX fittings. The series is ink printed for quick, accurate size identification on the jobsite and is sold in bulk cartons of 500 EA per size, making it a practical stock item for high-volume residential and commercial plumbing and mechanical contractor use.

Key Features

  • Size Range: The 649X Series spans the 649X3 and 649X4 crimp ring models, available in 3/4" and 1" sizes to match PEX SDR9 tube.
  • Durable Construction: Made from pure, annealed copper for consistent, reliable crimp performance and long-term joint integrity on PEX connections.
  • Crimp Connection: Engineered specifically for use with PEX SDR9 tube only, ensuring a proper fit and a secure, leak-resistant crimped seal.
  • Not for PB Tube: Not intended for use with PB (polybutylene) tubing and should not be substituted onto PB systems.
  • Ink-Printed Identification: Each ring is ink printed so installers can quickly confirm the correct size during rough-in and finish work, reducing mis-sized crimps.
  • Bulk Packaging: Sold in cartons of 500 EA per size, suited to high-volume residential and commercial plumbing and mechanical contractor use.
  • Consistent Crimp Results: Uniform copper ring construction supports repeatable crimps when used with a properly calibrated PEX crimp tool.

Technical Specifications

  • Models: 649X3 and 649X4.
  • Size Range: 3/4" and 1" for PEX SDR9 tube.
  • Material: Pure, annealed copper.
  • Packaging: 500 EA bulk carton per size.
  • Country of Origin: United States.

Typical Applications

  • Residential and Commercial PEX Plumbing Installations
  • PEX-to-Fitting Crimp Connections
  • New Construction Potable Water Distribution Systems
  • Plumbing Renovation and Repipe Projects
  • Professional Plumbing and Mechanical Contractor Use
  • Radiant Heating and Hydronic PEX Tube Runs

Why Sioux Chief?

Sioux Chief manufactures the 649X Series crimp rings from pure, annealed copper to deliver dependable, code-compliant PEX crimp connections for professional installers. With ink-printed sizing across the 649X3 and 649X4 models covering 3/4" and 1" PEX SDR9 tube, and a clear PEX SDR9-only use requirement, this series helps contractors select and install the correct ring with confidence on every job. Consistent copper construction and bulk 500 EA carton packaging, made in the United States, make the 649X Series a practical choice for plumbing wholesalers and contractors who need dependable PEX crimp rings on hand for daily installation work.

Product Specs

Country Of Origin:
United States
Product Type:
PEX Crimp Ring
Connection Type:
Crimp
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
Annealed Copper
Series:
649X
Product Size:
3/4" - 1"

Sioux Chief 649X3 – Frequently Asked Questions

1) Will Sioux Chief 649X crimp rings work on my PEX tubing, or do I need a specific type of PEX?
The 649X Series copper crimp rings are made for PEX SDR9 tube only. SDR9 is the standard dimension ratio used by ASTM F876 PEX, so if your tube is standard 3/4 inch or 1 inch PEX for potable water or hydronics, these rings match it. They are not intended for PB (polybutylene) tubing and should not be substituted onto a PB system.
2) Do copper crimp rings need a special tool, or will my PEX clamp tool work?
These are copper crimp rings, and they require a PEX crimp tool sized for the ring, not a cinch/clamp tool. Cinch tools are made for stainless steel ear clamps and will not compress a copper ring correctly. Use a properly calibrated crimp tool and check the joint with a go/no-go gauge, which is how you get repeatable results across a run.
3) What sizes do the Sioux Chief 649X crimp rings come in?
Two sizes: 3/4 inch (model 649X3) and 1 inch (model 649X4). Ring size has to match the nominal tube size exactly, and each ring is ink printed with its size so an installer can confirm it on the wall before crimping instead of eyeballing a mixed bucket.
4) Do these rings work with any brand of PEX crimp fitting?
The 649X rings are made to join PEX SDR9 tube to PEX crimp fittings, which is the standard barbed insert fitting profile in brass or poly. The ring and the tube size have to match; the fitting brand is a separate consideration, so pair the ring with fittings rated for SDR9 crimp tube.
5) Why annealed copper instead of a plain copper ring?
Annealing softens the copper so the ring deforms evenly under the jaws and holds its grip on the tube and fitting barb. That is what gives consistent crimps ring after ring on a long run. The 649X rings are pure annealed copper throughout.
6) Can I use these rings for radiant heat and hydronic loops, or only potable water?
Both. The 649X rings are used on PEX-to-fitting crimp joints in new construction potable water distribution, renovation and repipe work, and radiant heating and hydronic PEX runs. The requirement is the same across all of it: SDR9 PEX tube and a matching ring size.
How fast can I get the Sioux Chief 649X3 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 Sioux Chief 649X3 come with a warranty?
Absolutely. The Sioux Chief 649X3 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 Sioux Chief 649X3?
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 Sioux Chief 649X3 from ZenSupply?
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