Aspire Nautilus 3 Replacement Bulb Bubble Glass

One piece of Pyrex, and your Nautilus 3 holds more than double the liquid. The Aspire Nautilus 3 bulb bubble glass replaces the standard 2ml TPD straight glass with a wider, curved tube that expands the tank's capacity. 

Fits the 24mm Nautilus 3 and the Aspire Zelos 3 kit with no tools, no modifications, and no fuss. Drop it in, fill up, and you are refilling far less often throughout your day. If your original glass cracked or you just want fewer top-ups between meetings, this is the fix. One glass per pack. Over 18s only. Browse more Replacement Tank Glass at Pirate Vapes.

Why vapers choose this:

• Fewer refills through the day. The expanded capacity means a full tank lasts noticeably longer, especially at higher resistance and lower wattage where the Nautilus 3 sips liquid rather than burns through it

• Genuine Pyrex durability. Heat-resistant borosilicate glass that handles temperature swings without cracking, something the standard acrylic TPD section struggles with over time

• Cheap insurance against breakage. Under three quid for a spare glass beats buying a whole new tank when yours hits a tile floor

• Drop-in replacement. Same O-ring seats, same diameter, same fit. No adapters, no modifications

• Full coil range stays compatible. Every Nautilus series coil from the original 1.8ohm BVC through to the 0.3ohm mesh works exactly the same with the bubble glass installed

Aspire Nautilus 3 Replacement Bulb Bubble Glass Features

More Liquid, Fewer Interruptions

The standard Nautilus 3 glass holds 2ml under UK TPD rules. The bubble glass increases that considerably. For vapers who rely on the Nautilus 3 as a daily driver, particularly at work or on a commute, the difference is real. You go from topping up every couple of hours to topping up once or twice a day. That matters when your desk is one place and your bottle is in another.

Pyrex Versus the Standard Acrylic

The UK TPD version of the Nautilus 3 ships with a polycarbonate section, not glass. Practically speaking, polycarbonate clouds up over time with certain e-liquids, particularly citrus and menthol blends. Pyrex does not react the same way. The bubble glass stays clear, stays inert, and gives you a proper view of your liquid level without guessing.

Why the Bubble Shape Works

Curved glass distributes impact force differently from a flat cylinder. A knock that would crack a straight glass tube often gets absorbed by the dome of a bubble section. It is not indestructible, obviously, but the shape itself adds a small amount of resilience against the kind of minor bumps that happen in pockets and bags.

Watch the Nautilus 3 Version

Two versions of the Nautilus 3 exist. The standard 24mm Nautilus 3 (the one bundled with the Aspire Zelos 3 kit) and the smaller Nautilus 3 22mm (bundled with the Zelos X). This bubble glass fits the 24mm version only. If your tank came in a Zelos X box, this is not the right glass. Check the diameter printed on your tank base or measure across the widest point of your current glass before ordering.

Keeps Your Coil Options Wide Open

Swapping the glass changes nothing about coil compatibility. The Nautilus 3 accepts the entire Nautilus coil family: 1.8ohm BVC, 1.6ohm BVC, 0.7ohm mesh, 1.0ohm mesh, 0.3ohm mesh, and several others. That range covers tight MTL all the way through to a loose restricted draw. The bubble glass does not alter airflow, coil seating, or wattage behaviour in any way.

How to Replace the Aspire Nautilus 3 Glass

Quick swap. Two minutes at most.

1. Empty the tank. Vape or pour out any remaining e-liquid. Working with a dry tank avoids mess and lets you see what you are doing.

2. Unscrew the base. Hold the tank body and twist the base section anticlockwise. The glass and top cap will separate from the base.

3. Slide off the old glass. Gently push the existing straight glass or broken glass off the top section. The O-rings hold it in place, so a firm but careful push does it.

4. Seat the bubble glass. Slide the new Pyrex bubble glass onto the top section, making sure it sits snugly against both O-rings. You will feel it click into position.

5. Reassemble. Screw the base back on clockwise until finger-tight. Do not overtighten. The O-rings create the seal, not brute force.

6. Refill and let the coil catch up. Fill through the sliding top port and give the cotton three to four minutes to fully saturate before your first draw, especially if you installed a fresh coil at the same time.

What's in the Aspire Nautilus 3 Replacement Bulb Bubble Glass Box

One Pyrex bubble glass tube. That is everything. No O-rings, no coil, no tank, no e-liquid. If your existing O-rings are worn or cracked, pick up a spare set separately before fitting the new glass.

The Right Glass for Every Nautilus 3 Owner

This bubble glass is made for the 24mm Aspire Nautilus 3 and the Zelos 3 kit that ships with it. Both use the same tank body, the same O-ring dimensions, and the same base threading. If your Nautilus 3 sits on a third-party mod with a 510 connection, the glass swap works identically.

Not compatible with the Nautilus 3 22mm, the Nautilus 2, the Nautilus Mini, or the Nautilus GT. Each of those tanks uses a different glass diameter and O-ring configuration. The Nautilus name covers a long product line, so matching the right glass matters. Check your Vape Tanks and coils before ordering.

About Aspire

The Nautilus series defined Mouth-To-Lung Vaping for an entire generation of UK vapers. When the original Nautilus launched, it set the standard for tight-draw flavour that every MTL tank since has been measured against. 

The Nautilus 3 is the latest refinement of that platform: sliding top-fill, push-fit coil installation, e-liquid shut-off valve, and seven airflow settings from 0.8mm to 3.0mm. Aspire designed the Nautilus 3 to be backwards-compatible with every coil the series has ever produced. That kind of continuity is rare in vaping hardware, and it means a simple accessory like this bubble glass keeps your tank running exactly the way Aspire intended.

Stock Up and Save

Glass breaks. That is the nature of glass. Picking up a spare now means you are not waiting for delivery with a cracked tank sitting on your desk, unable to vape. At under three quid, keeping a backup in your drawer is common sense. 

Every order from Pirate Vapes ships same day before 4 pm in padded packaging designed to protect fragile items during transit. Age-verified checkout, over 18s only, TPD-compliant stock. Spend over £25 and delivery is free with Free Pirate Post.

Conclusion

The Nautilus 3 bubble glass is one of those small purchases that makes a genuine difference to daily vaping. More liquid capacity, better durability than the standard acrylic section, and a clear view of your e-liquid level at all times.

It fits the 24mm Nautilus 3 and the Zelos 3 kit, works with the full range of Aspire Nautilus coils, and installs in under two minutes. If you own a Nautilus 3, this is worth having. Browse more Vape Accessories and vape coils at Pirate Vapes.

FAQs

Does the bubble glass fit the Nautilus 3 22mm?

No. The bubble glass fits the standard 24mm Nautilus 3 only. The Nautilus 3 22mm version uses a narrower glass with different dimensions.

What capacity does the bubble glass give?

It increases the tank capacity beyond the standard 2ml TPD straight glass. The expanded volume means significantly fewer refills throughout the day.

Will my Nautilus coils still work with the bubble glass?

Every Nautilus series coil works exactly the same. The glass change does not affect coil fit, airflow, or performance in any way.

Can I use acidic e-liquids with Pyrex glass?

Yes. Pyrex is inert and does not react with citrus, menthol, or cinnamon-based liquids. The standard polycarbonate section can cloud or crack with those flavour profiles over time, but Pyrex handles them without issue.

How do I know if my Nautilus 3 is the 24mm version?

If your tank came with the Aspire Zelos 3 kit, it is the 24mm version. If it came with the Zelos X kit, you have the 22mm version. You can also measure the diameter of your current glass at its widest point.