Apollo 1/2″ PEX Crimp Ring 10-Pack

The Apollo 1/2″ PEX Crimp Ring 10-Pack delivers professional-grade reliability for contractors who need dependable PEX connections at 160 psi working pressure. At significantly less cost than push-to-connect alternatives, these copper crimp rings make economic sense for multiple joints — though you’ll need the right crimping tools to use them.

Skip this product if you haven’t invested in PEX crimp tools. The crimp system requires specific tool sizes, unlike universal pinch clamps, but delivers a 360-degree uniform compression seal that contractors trust.

Performance Under Pressure

These annealed copper rings maintain 160 psi at 73°F and 100 psi at 180°F — specs that matter when you’re running hot water lines or dealing with Montana’s temperature swings from -40°F winters to 100°F summer attic temperatures. The 25-year limited warranty backs up these pressure ratings when used as part of a complete Apollo PEX system.

The pressure ratings tell the real story. That 160 psi cold water rating gives you a solid safety margin over typical residential water pressure of 40-80 psi. The 100 psi rating at 180°F handles continuous hot water circulation without worry. Exceed these limits — push water temperature above 180°F — and you void the warranty.

Specification	Value	Source
Working Pressure (73°F)	160 psi	Manufacturer
Working Pressure (180°F)	100 psi	Manufacturer
Material	Annealed Copper	Manufacturer
Warranty	25 Years Limited	Manufacturer
Quantity	10 pieces	Manufacturer

These rings work equally well for potable water systems and radiant floor heating — particularly relevant for Montana contractors installing hydronic systems to combat those long, cold winters. The annealed copper construction resists corrosion. Field experience shows copper crimp rings often outlast the PEX tubing itself in properly installed systems.

Meeting the Standards

Apollo designed these rings to meet every relevant standard: ASTM F1807 for the crimp ring specification, ASTM F876 and F877 for PEX systems, CSA B137.5 for pressure applications, and NSF/ANSI 61 for drinking water safety. The rings comply with the Safe Drinking Water Act’s lead-free requirements.

Standards compliance isn’t optional in professional plumbing. That ASTM F1807 certification specifically covers metal insert fittings with copper crimp rings for SDR9 cross-linked polyethylene tubing — exactly what you’re installing in residential and commercial applications. The NSF/ANSI 61 listing means these rings won’t leach anything harmful into drinking water.

Installation Done Right

The installation sequence matters: cut PEX squarely, slide the ring on, insert the fitting fully, position the ring 1/8 to 1/4 inch from tube end covering all barb ribs, crimp with the proper 1/2-inch tool until jaws meet, verify with a Go/No-Go gauge, then pressure test before closing walls.

That 1/8 to 1/4 inch positioning from the tube end is critical. Too close to the end and you risk an incomplete seal. Too far back and you miss covering all the barb ribs. The Go/No-Go gauge verification isn’t optional — the Go slot must fit over the crimped ring while the No-Go slot must not. Get the positioning wrong and you risk under-crimping or over-crimping.

These rings require 1/2-inch PEX-B tubing (SDR-9) and compatible 1/2-inch barb fittings in brass or poly-alloy. You’ll need a 1/2-inch PEX crimp tool — manual or battery-powered. Don’t try using the wrong size tool or you’ll create leaks waiting to happen.

Cost Reality Check

These copper crimp rings cost significantly less per connection than push-to-connect fittings. The economics become clear when you’re making dozens or hundreds of connections on a job.

Yes, you need to invest in crimping tools upfront. But after 50 connections, you’ve already saved money versus push-to-connect. After 500 connections on a typical house, the savings add up substantially.

The trade-off versus stainless steel pinch clamps comes down to tooling — pinch clamps use a universal tool for multiple sizes while these copper rings require specific tool sizes. If you want easier one-handed operation, Apollo’s Pro Crimp rings (APXCR12LT) feature a plastic top that holds the ring in place during installation — worth considering for tight spaces.

The Montana Factor

The 25-year warranty matters more in Montana’s climate extremes. When your plumbing sees -40°F in crawl spaces and 180°F in hydronic systems, you need components that handle thermal cycling without failing. These copper rings deliver permanent compression that maintains seal integrity through decades of temperature swings.

For radiant floor heating installations — increasingly popular in Montana’s cold climate — these rings provide reliable connections at the 180°F operating temperatures common in high-efficiency systems. The permanent compression design eliminates callbacks from loose connections.

Professional reviews confirm what field experience shows: properly installed rings create leak-free connections verified easily with the Go/No-Go gauge. Each 10-pack gives you enough rings for a bathroom rough-in or small repair job.

FAQ

Are Apollo crimp rings compatible with all PEX types? No — these rings work specifically with 1/2-inch PEX-B tubing (SDR-9). PEX-A systems use expansion fittings instead of crimp rings and operate on different connection principles.

What’s the actual cost advantage over push-to-connect fittings? Crimp rings cost significantly less per connection than push-to-connect fittings. The more connections you make, the more the savings compound — especially on whole-house plumbing jobs.

Is the Go/No-Go gauge really necessary? Yes — the gauge verifies proper crimping by ensuring the Go slot fits over the crimped ring while the No-Go slot does not. This verification tool makes it easy to confirm secure connections before you close up walls.

Can these handle Montana’s extreme temperature swings? The rings maintain 160 psi at 73°F and 100 psi at 180°F. Combined with the 25-year warranty when used in complete Apollo systems, they’re engineered for long-term performance through temperature extremes.

What causes crimp ring failures? Incorrect positioning is the main culprit — placing rings too close or too far from the tube end leads to under-crimping or over-crimping. Following the 1/8 to 1/4 inch positioning rule and covering all barb ribs prevents most failures.