FUPA #12 Pyrex Welding Cup Kit with Titanium Cover - Twin Pack

In this review the FUPA #12 Pyrex Welding Cup Kit with Titanium Cover is evaluated for TIG welders who need reliable gas coverage and a durable cup setup. The twin pack design and included titanium protector make it a practical choice for fabricators working stainless steel; the single biggest reason to buy is the patented diffuser and 0.75 in/19mm opening that consistently improves gas shielding for DC TIG applications, producing cleaner, more consistent welds when used with recommended tungsten and flow rates.

Key Features

• Twin cups and spare parts: The kit includes two full Pyrex cups and a spare gas lens diffuser so users have an immediate replacement on hand for uninterrupted work.
• Titanium protector: A Titanium cover protects the glass cup from impact and contamination while preserving visibility of the arc area.
• Patented diffuser: The issued US patent on the diffuser design provides even gas coverage across the 0.75 in/19mm ID for improved shielding on stainless and thin sheet materials.
• Recommended tungsten and amperage: Optimized for 3/32 in/2.4mm tungsten with a 180 amp continuous rating, the cup suits common DC TIG settings and can tolerate higher pulse peaks.
• Made in USA glass: Hand made from borosilicate laboratory grade glass for thermal stability and optical clarity at the weld zone.

Who It's For

The FUPA #12 kit is best for TIG welders who focus on stainless steel and sheet metal work and want a reliable way to improve gas coverage and weld appearance. Its 19mm ID and patented diffuser make it well suited to fabricators using 3/32 in/2.4mm tungsten on DC polarity with argon flows around 20-30+ CFH.

Shop owners or hobbyists who need a ready-to-go spare parts set and a protective titanium cover will appreciate the twin pack. Users with #9 or #20 torches should note they need a 45V44 gas lens, and those with #17, #18 or #26 torches must purchase the corresponding Furick #17 torch kit instead.

Pros & Cons

Pros

• Improves gas coverage for cleaner welds, especially on 304 stainless sheet metal.
• Includes two cups plus a spare diffuser and o-rings, reducing downtime for repairs or replacements.
• Titanium protector adds durability without blocking view of the arc area.
• Hand made borosilicate glass offers good thermal and optical properties for TIG work.

Cons

• Does not fit all torch sizes out of the box; specific torch adapters or kits are required for some torch models.
• Some users question value for money, finding the kit pricey relative to basic cups.

Specifications

Model	FUPA #12 Pyrex Welding Cup Kit (Twin Pack)
Inside Diameter	0.75 in / 19mm
Recommended Tungsten	3/32 in / 2.4mm
Max Continuous Amperage	180 amp (higher with pulse)
Material	Borosilicate laboratory grade glass with Titanium protector
Included Parts	2 full cups, spare gas lens diffuser, o-rings, Titanium protector
Recommended Gas Flow	20-30+ CFH Argon

Our Verdict

The FUPA #12 Pyrex Welding Cup Kit is a good choice for TIG welders seeking better gas shielding and cleaner stainless welds; the patented diffuser and twin-cup kit reduce downtime while the Titanium cover adds protection. It is especially worthwhile for users with compatible torches and for shops that value consistent gas coverage, though buyers should confirm torch compatibility and weigh the kit cost against basic cup alternatives.

Frequently Asked Questions

Will this cup fit my torch?
It fits with specific adapters: use a 45V44 gas lens for #9 or #20 torches, or buy the Furick #17 kit for #17, #18, or #26 torches.

What tungsten size and amperage is recommended?
The cup is recommended for 3/32 in (2.4mm) tungsten and rated for 180 amp continuous on DC polarity, with higher peaks possible on pulse settings.

How much argon should I use?
Typical argon flow is 20-30+ CFH for proper shielding with the 0.75 in/19mm diffuser.