Tool view

PEX CONNECTION TOOLS

LH-X20

PEX copper-ring crimp tool

Updated 2026-09-09 / V0.9

Check PEX fitting insertion, copper-ring position and the finished connection in sequence.

Copper-ring connections
System-specific verification
Connected selection information

Download PDF guide Contact & selection details →All catalogs & product guides →

Overview

A PEX copper-ring crimp tool for matched pipe, fitting and ring connections, kept distinct from other pipe joining methods.

Explore PEX pipe connections while keeping copper-ring crimping and stainless-clamp systems distinct.

Features & working characteristics

Copper-ring connections

Define the tool through the ring-and-fitting relationship, separately from stainless clamp systems.

System-specific verification

Include the connection system verification requirements when gathering fitting documentation.

Connected selection information

The model, connection part and application criteria sit in a shared reference linked to application pages and technical articles.

Start with these inputs

01
System part numbers for tubing, fitting and copper ring
02
Nominal size, matched jaws and working clearance
03
Ring location, gauge and system test documents

Product profile

Joining method: PEX copper-ring crimping
Components: Tubing, insert fitting and external copper ring
Tooling basis: Crimp size and tool combination accepted by the system
Preparation: Tube end, full insertion and ring positioning
Inspection: Applicable system gauge followed by required piping tests
Different tasks: Stainless clamp closure and cold expansion need their own tooling

MODEL SELECTION

Three models. Three connection tasks.

Model	Connection	Typical task	Check first
LH-F06 ↗	Ferrules	Control-panel short-wire assembly	Wire part number, cross-section and strand construction
LH-I06 ↗	Insulated terminals	Replacing an equipment wire terminal	Terminal series, conductor area and insulation diameter
LH-X20 ↗	PEX copper rings	PEX joints near walls or equipment	System part numbers for tubing, fitting and copper ring

IN DEPTH / LIHENGRIX

A closer look

The forming target in copper-ring crimping

LH-X20 addresses the external copper ring around a tube-and-insert assembly. The jaws act on the ring in its specified position. Ear clamps and cold-expansion reinforcing rings use different joining principles. Retain tubing and fitting-system information rather than only a nominal size.

External copper ring, jaw working area and insert fitting.

Connection and selection boundaries

LH-X20 information focuses on the external copper ring of a PEX connection. Select tubing, insert fitting and ring within an accepted system before checking tooling size. Equal nominal sizes do not establish interchangeability between systems or tools.

Stainless ear clamps need ear closure, cold expansion expands the tube, and copper press fittings use their own profiles. These differ from this copper-ring workflow. Permitted media, temperatures and pressures come from system documents.

Related information: Copper rings versus clamps

Ring position and jaw seating

Insert the fitting and position the ring by the system instructions before seating the matched jaws. End condition, insertion and ring skew all affect the result, so establish them before applying force. If access is insufficient, revise assembly order or use a permitted tooling arrangement rather than pressing with poorly seated jaws.

From preparation to assembly

This sequence organizes the task. Use paired component and tool documents for positioning, cycle and acceptance conditions.

Check insertion and location before forming; inspect the ring and system afterwards.

Confirm the system: match tubing, fitting, ring and tool; prepare instructions and the applicable gauge.
Prepare the end: make a square cut; check damage, distortion and debris, then place the ring as instructed.
Insert and position: seat the fitting as required, locate the ring using system instructions and check alignment before forming.
Locate the tool: seat the matched jaws over the full working region, maintain instructed alignment and complete the specified cycle.
Inspect: use the matched gauge, rework failed connections as instructed and complete the required piping tests.

Symptoms and diagnostic directions

Tilted ring and tube damage: return to the connection for inspection.

Scroll horizontally to view the full table

Observation	Check first	Response
Ring moves	Initial location, support and working movement	Handle the joint as specified and review clearance.
Gauge check fails	Gauge, jaws, cycle and tool condition	Rework as instructed; feel or repeated squeezing is not acceptance.
Jaws cannot seat	Corner clearance, direction and handle travel	Change the sequence or use a system-approved tool option.
Tube damage	Cutting, insertion and misplaced pressure	Address damage, remake and complete required checks.

From ring inspection to system acceptance

Visual and gauge checks are followed by the specified system tests and project acceptance. Recording tube, fitting, ring and tooling helps review changes. See the PEX family explanation for the ASTM reference map; tubing and fitting standards are not presented as certification of this tool.

Completion checklist

Review appearance, pairing and final assembly separately, with an inspection basis for each step.

Related information: PEX connection methods Building pipework

Tubing, fitting, ring, jaws and gauge form an accepted combination.
The tube is undamaged; insertion and ring position are confirmed.
Jaws seat fully and tube support does not move the ring.
Visual and applicable gauge checks meet system requirements.
Piping tests and records are complete; a ring check alone does not accept the system.

PEX joints near walls or equipment

Check full jaw and handle clearance when planning assembly order. Locate the tubing and fitting, then confirm ring position. If final installation blocks access, change the sequence or use an accepted tool option. Keep ring checks with tubing and fitting records for the subsequent system test.

References and further reading

Publisher information on the relevant components, tooling or standard scopes for further reading.

CARE & ORGANIZATION

Care & storage

01
Keep working surfaces and connection parts clean; check for visible damage, looseness and unusual wear before use.
02
Follow the tool and matched connection-part documentation for use, maintenance and adjustment.
03
Store away from moisture and impact, keeping accessories and model references with the tool.

MODEL QUESTIONS