TIG torches demand precision. A single worn nozzle, cracked collet, or degraded gas lens throws off your shielding, creates porosity, and wastes time re-striking. Most welders wait until failure to replace consumables—a costly mistake.

The Alffun 58-piece TIG gas lens kit eliminates guesswork. It’s a complete replacement set for WP-17, WP-18, and WP-26 torches, covering every consumable you’ll need in one purchase.

What’s Inside the Kit

• 20 collets (various sizes for different electrode diameters)

• 8 collet bodies (stubby and standard)

• 25 alumina gas cups/nozzles (#12 standard size)

• 3 back cups (torch head protection)

• 2 gaskets (seal integrity)

This breadth means you’re covered for electrode swaps, torch repairs, and emergency replacements without waiting for shipping.

Why Gas Lens Matters for Shielding

A gas lens distributes argon evenly around the electrode. A worn lens creates dead zones—areas where shielding gas doesn’t reach the weld pool. Result: oxidation, porosity, and weak beads.

The alumina nozzles in this kit are durable and resistant to spatter buildup. They maintain consistent gas flow across multiple welding sessions.

Compatibility & Fit

Torch Models Supported:

• Lincoln PTA-17, PTA-18, PTA-26

• Miller WP-17, WP-18, WP-26

• ESAB WP-series torches

• Most aftermarket WP-compatible torches

Electrode Sizes: The 20 collets cover 0.020″ to 3/32″ (0.5mm to 2.4mm) electrodes.

Gas Type: Argon (standard TIG shielding gas).

Performance & Use

Alffun 58pcs TIG Welding Torches Gas Lens Kit Collet Body Alumina Nozzle Consumables Kit Fit WP-17/18/26 Series TIG Welding Torch Accessories

• Set includes:3pcs Back cup, 20 collets, 8pcs collet body, 25pcs Alumina gas cup/ nozzle, 2 gasket
• Fine workmanship: precise made makes it combined very well to machine.100% brand new and high quality Durable and reliable to use
• provide a good welding performance, gives welders an comfortable feeling during the welding job.
• 25 Alumina ceramic cups 10N series size #4, #5, #6, #7 and #8. 5-pcs for each size.20 collets 0.040", 1/16", 3/32" and 1/8". 5-pcs for each size.8 collet bodies 0.040", 1/16", 3/32" and 1/8". 2-pcs for each size.3 Tungsten back caps at Long, Medium and Short. 1-pcs for each size.2 gasket for regular ceramic cup setup.
• This kit fits all 17 26 series air cooled welding torches and 18 series water cooled torches, Lincoln PTA-17 PTA-17V PTA-26 PTA-26V PTW-18 Tig Welding Torches. Applicable machine such as Rilon，Riland，Jasic，Mitech，Chiry，UNT，Krypton，Longetivity，Berlan, etc.

Buy on Amazon

Last update on 2026-04-08 / Affiliate links / Images from Amazon Product Advertising API

What to Compare Before You Buy

• Nozzle Material: Alumina vs. ceramic vs. copper. Alumina (this kit) resists spatter better but is more brittle; ceramic is softer; copper conducts heat faster but wears quicker.

• Collet Variety: Does the kit include stubby collets? (Yes, 8 total.) Stubby collets reduce heat and improve control in tight spaces.

• Quantity & Price Per Unit: 58 pieces at ~$25–$35 = ~$0.43–$0.60 per consumable. Compare to buying individual nozzles at $2–$5 each.

• Torch Compatibility: Verify your torch model (WP-17/18/26 or equivalent). Check your manual or torch label.

• Warranty & Returns: Check Amazon return policy; most consumables kits allow 30-day returns for defects.

Comparable Amazon Picks (Optional)

•  RIVERWELD TIG Gas Lens Kit (31-Piece)  (ASIN: B09LQXJ5ZY) — Smaller set, fewer collets, ~$20. Good for occasional welders.

•  Weldtec TIG Torch Consumables Kit (81-Piece)  (ASIN: B0G1HVP7D2) — Larger set, more nozzles and cups, ~$40. Best for high-volume shops.

How to Install Consumables

1. Disconnect the torch from the power source and gas supply.

2. Unscrew the back cap (large nut at the torch head).

3. Remove the old collet and nozzle by hand or with a small wrench.

4. Insert the new collet into the torch body (small end first).

5. Slide the new nozzle over the electrode and collet.

6. Screw the back cap hand-tight, then snug with a wrench (do not over-tighten).

7. Reconnect gas and power.

Test with a scrap piece before production welding.

Storage & Shelf Life

Store consumables in a dry, cool place. Alumina nozzles don’t degrade over time, but collets can crack if dropped or over-torqued. Keep extras in a labeled container for quick access.

When to Replace Consumables

• Nozzle: Spatter buildup reduces gas flow; clean with a soft brush or replace if cracked.

• Collet: Replace if it no longer grips the electrode firmly or shows visible cracks.

• Gas Lens: Replace if the electrode no longer sits centered in the nozzle.