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8PRO4 Furick No.8 Pro Pyrex Cup Kit (4x Cups & 4 O-Rings)
  • 8PRO4 Furick No.8 Pro Pyrex Cup Kit (4x Cups & 4 O-Rings)
  • 8PRO4 Furick No.8 Pro Pyrex Cup Kit (4x Cups & 4 O-Rings)
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Rapid Ref : 8PRO4  

Furick No.8 Pro Pyrex Cup Kit (4x Cups & 4 O-Rings)
8PRO4

£38.00  EX VAT
 Buy in 3 easy interest free payments of £12.67† with

Includes four No.8 Pro Pyrex cups and comes equipped with four O-rings.

This model of Furick cups is recommended for Mild Steel and Stainless Steel applications where positive gas coverage is guaranteed, and arc stability is critical. The PRO No.8 brand of Pyrex cups are of AC/DC polarity and have amperage ratings of 200.

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Furick 2 Series TIG Parts FAQs

Cups, gas lenses, diffusers, O-rings and cup kits for a TIG torch, and how to match and look after them.

When is a gas lens worth fitting?icon-minus-redicon-plus-red

A gas lens is most useful when coverage matters: critical or high-quality welds, joints that need a longer electrode extension, such as inside corners, and materials sensitive to contamination, such as stainless steel and titanium. For practice pieces or non-critical joints, a standard collet body is often enough.

A gas lens also tends to be less sensitive to small changes in set-up, so it can help with consistency. It does not cure bad technique, a leaking gas line or draughts, so fit it as part of a sound set-up, and check the cup, collet and tungsten sizes all match.

How do I choose a cup size?icon-minus-redicon-plus-red

Cups are sized by the diameter of the opening, usually in sixteenths of an inch, so the bigger the number, the bigger the opening. A larger diameter and a longer cup generally give a longer smooth column of gas and better shielding. A smaller cup suits tight access, but it speeds the gas up and can make the flow more turbulent.

Gas lens cups and standard cups are different designs, so use the type that matches your collet body. Choose the largest cup that still lets you see and reach the joint, and adjust the gas flow to suit rather than just increasing it.

What are the pros and cons of clear glass cups compared with ceramic?icon-minus-redicon-plus-red

The main benefit of a clear heat-resistant glass cup is that you can see the electrode and the weld pool through it, which helps in corners and tight spots. The drawbacks are that glass is more brittle than ceramic, can cloud with fume deposits and heat, and the visibility benefit matters less with larger cups and longer electrode extensions.

Some welders keep a ceramic cup as a spare for general work. Handle glass with care, avoid dragging or knocking it, and replace any cup that is cracked, chipped or badly clouded. Check that the cup is designed for your collet body or gas lens and torch style.

What does a diffuser do, and how do I know when it needs replacing?icon-minus-redicon-plus-red

A diffuser spreads the shielding gas evenly as it leaves the torch, so the gas settles around the electrode instead of jetting out unevenly. Like the collet body, it must match the torch style and the tungsten diameter.

Replace a diffuser or gas lens that is blocked, cracked, loose, damaged or heavily contaminated, because poor gas distribution lets air into the weld zone. Signs include dull or discoloured welds, porosity or a tungsten that wears and oxidises quickly. Always remove the electrode and cool the torch before changing parts.

See all 6 questions for this category

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