Vaporesso iTank 8ml Replacement Bubble Glass

The standard Vaporesso iTank and iTank 2 ship with a straight glass that keeps the tank at the standard 2ml TPD capacity. Swap it for this Pyrex bubble glass and the tank holds 8ml of e-liquid. 

The outward-curved Fatboy profile fits both tank versions and uses the same O-ring seals and tank hardware already in place. One piece. No tools beyond what you already have for coil changes. Compatible with the iTank and iTank 2 found on the Vaporesso Armour Max and Vaporesso Armour S kits. Order with tracked delivery from Pirate Vapes.

Why iTank vapers choose this glass:

• Four times the capacity: The straight glass gives 2ml. This bubble glass gives 8ml. For high-wattage sub-ohm vaping where e-liquid consumption is high, the difference between refilling every hour and refilling every few hours is significant.

• Pyrex construction: More impact-resistant than standard soda glass. The Pyrex material reduces the risk of cracking if the tank takes a knock. Not indestructible, but genuinely more durable.

• Direct fit for the iTank and iTank 2: Both tank versions use the same connection points. Same O-rings, same top cap, same base section.

• Backup glass on hand: Tank glass breaks. Having a replacement ready means you are not waiting for delivery every time it happens.

• Simple install: No special tools. The glass slides into the same position as the standard piece using the existing tank hardware.

Vaporesso iTank 8ml Replacement Bubble Glass Features

8ml vs 2ml: Why the Capacity Difference Matters

The Vaporesso iTank is a sub-ohm tank designed for high-wattage DTL vaping. The Armour Max runs at up to 220W, the Armour S at up to 100W. At those wattage levels, a 2ml tank empties quickly: often within 30 to 60 minutes of steady vaping. The difference the bubble glass makes is time. An 8ml capacity, at the same consumption rate, extends that to two to four hours between refills. For daily DTL vapers who find the standard glass too small, this is a practical quality-of-life improvement rather than an aesthetic upgrade. Browse more Vaporesso Vapes and the full Vaporesso range at Pirate Vapes.

Pyrex Glass: What That Means for Durability

Standard vape tank glass is typically borosilicate glass or basic soda lime glass. Pyrex is a brand name for borosilicate glass, known for its resistance to thermal shock (rapid temperature changes) and greater physical impact resistance compared to soda glass. The iTank's sub-ohm coils run warm. Pyrex handles those temperature variations without cracking from thermal stress. It is worth noting that Pyrex is still glass: a hard enough knock onto a hard surface will still break it. But it tolerates everyday use and the temperature cycling that comes with sub-ohm vaping better than cheaper alternatives.

Fatboy Bubble Profile: Shape, Not Just Style

The bubble glass profile, sometimes called Fatboy style, curves outward from the tank's top and base connection points. This outward curve is what creates the extra volume. The glass itself is shaped to make use of the space around the coil assembly rather than keeping the profile straight. At 3.5cm diameter and 2.8cm tall, it is a compact piece given the capacity increase it delivers. The curved profile does change the look of the tank noticeably compared to the straight glass. Worth knowing before ordering if visual consistency with a kit's original appearance matters.

When to Replace iTank Glass

Tank glass breaks for three main reasons: impact (dropping the device), overtightening the tank when reassembling (which cracks the glass at the O-ring seat), and thermal stress from extreme temperature changes. A cracked replacement tank glass is not just inconvenient. E-liquid will leak from the crack into the airflow path and potentially into the mod. Replacing broken glass quickly prevents that. The bubble glass is also worth fitting proactively if you are using the tank extensively and simply want the extra capacity from day one.

How to Install the Vaporesso iTank 8ml Replacement Bubble Glass

Standard glass change. No tools required beyond what you would use to change a coil.

1. Drain the tank before starting. Tip any remaining e-liquid out through the fill port.

2. Unscrew the top cap from the tank and set it aside.

3. Unscrew the base of the tank from the glass section. This separates the base (with the coil) from the glass and top cap.

4. Slide the old glass off the O-rings at the top and base. If it is broken, use a cloth to protect your hands when handling the pieces.

5. Check the O-rings on the top cap and base section. Wipe them clean. They should sit cleanly in their grooves. Do not displace or stretch them.

6. Slide the new bubble glass onto the base O-ring first, then push the top cap section down onto the top O-ring until it seats firmly. The glass should sit snugly without gaps.

7. Reassemble the tank: screw the base back in, finger-tight. Do not overtighten. Overtightening is a common cause of glass cracking at the O-ring seat.

8. Fill with e-liquid and leave for two minutes before vaping to allow the new coil position to settle.

What's in the Box

One Pyrex bubble glass in the Fatboy profile. No O-rings, no tools, no e-liquid, no protective cover. The O-rings already on the iTank and iTank 2 are reused. A separate rubber protective glass cover for the iTank bubble glass is available from Pirate Vapes in the vape accessories range.

Made for the Vaporesso iTank and iTank 2

This bubble glass fits the Vaporesso iTank and Vaporesso iTank 2 only. These tanks are the standard sub-ohm tanks supplied with the Armour Max 220W kit and the Armour S 100W kit.

It does not fit the Vaporesso iTank 2 XL, the Vaporesso iTank T, or any other Vaporesso tank outside the iTank and iTank 2 range. Each Vaporesso tank uses a different glass diameter and connection system. If you are unsure which tank you have, check the labelling on the glass or the box the kit came in before ordering. A glass from the wrong tank will not seat correctly and will leak.

Browse the full range of Replacement Tank Glass and Vaporesso coils at Pirate Vapes to keep your iTank setup running.

About Vaporesso

Vaporesso is manufactured by Shenzhen Smoore Technology, one of the world's largest vape hardware producers. The brand is known for the AXON chipset, the GTX coil range, and a catalogue of sub-ohm tanks and pod systems that spans beginner to advanced setups.

The Armour range sits at the advanced end: high-wattage regulated mods paired with the iTank sub-ohm tank platform. Vaporesso's in-house coil development, including GTX, COREX, and QF Meshed technologies, is the main reason vapers choose Vaporesso hardware over alternatives at the same price point.

Stock Up and Save

Tank glass breaks when least expected. Having a spare bubble glass in the drawer means a broken glass does not stop you vaping for days. Pick one up alongside your next coil order from Pirate Vapes. Same-day dispatch before 4pm. Free Pirate Post on orders over £25. Tracked delivery throughout the UK.

Conclusion

One piece of Pyrex bubble glass that takes the Vaporesso iTank and iTank 2 from 2ml to 8ml capacity. Compatible with the Armour Max and Armour S kits. Direct replacement using the tank's existing O-rings.

Useful as a capacity upgrade for heavy DTL vapers, or as a spare glass to have on hand when the original breaks. Order alongside Vaporesso Coils and vape accessories at Pirate Vapes.

FAQs

Does this glass fit the iTank 2 XL or iTank T?

No. This bubble glass fits the standard Vaporesso iTank and iTank 2 only. The iTank 2 XL and iTank T use different dimensions and connection systems.

How much e-liquid does the bubble glass hold?

8ml, compared to the standard 2ml with the straight glass the tank ships with.

Do I need new O-rings for the installation?

No. The bubble glass uses the O-rings already on the iTank. Inspect them before fitting to make sure they are in good condition.

Is this a genuine Vaporesso part?

It is a non-identical replacement part, meaning it fits the iTank and iTank 2 but is not the same shape as the glass the tank originally ships with. The bubble glass is a different profile from the original straight glass.

Can I use any e-liquid with the bubble glass?

Yes. The glass itself does not affect which e-liquids work in the tank. The iTank and iTank 2 are sub-ohm tanks suited to 70/30 high-VG shortfills or other DTL e-liquids.

Is a protective cover available?

Yes. A rubber silicone protective sleeve for the iTank bubble glass is available separately in the vape accessories range at Pirate Vapes.