This is the genuine Terra Incognita replacement stopper for the Bullet vacuum flask series, fitting the 500, 750, and 950 ml models. Molded from high-density, BPA-free food-grade plastic, it restores the airtight vacuum seal that keeps a Bullet flask holding temperature - the exact OEM part rather than a generic substitute. At 19 g (0.67 oz), it is the inexpensive fix that brings a well-used flask back to full performance instead of retiring it.
Terra Incognita is a European outdoor brand with more than 18 years of expedition experience and its own gear production, and offering spare parts like this stopper reflects a repair-first approach to gear. Lids and seals are the components that wear or go missing first, so a precise-fit replacement means your insulated flask keeps working for years rather than heading to the bin over one lost cap.
Who is the Bullet Stopper for?
This replacement is for anyone who owns a Terra Incognita Bullet flask and has lost, cracked, or worn out the original stopper. If your flask has stopped holding heat as well as it used to, a tired seal is often the cause, and swapping the stopper is the simplest fix. It is also smart insurance to keep a spare on hand before a long expedition.
Why does the Bullet Stopper need a genuine seal?
A vacuum flask keeps its temperature only as long as the closure seals perfectly against the neck. Generic stoppers rarely match the thread pitch and gasket geometry of the original, leaving tiny gaps that let heat escape and drinks cool early. Because this part is the OEM stopper cut to the Bullet's exact dimensions, it seats fully and restores the airtight seal the flask was designed around.
Which Bullet flasks fit the Bullet Stopper?
One stopper covers the whole Bullet lineup - the 500 ml (17 oz), 750 ml, and 950 ml (25/32 oz) flasks share the same optimized closure dimensions. Thread it into a clean, dry neck until it seats firmly, and the flask is ready to hold temperature again. The high-density plastic resists the heat of boiling water and the knocks of trail use.
Specifications
| Characteristic | Bullet 500 Stopper | Bullet 750/950 Stopper |
|---|---|---|
| Weight (US) | 0.67 oz | 0.88 oz |
| Weight (EU) | 19 g | 25 g |
| Compatible Models | Bullet 500 (17 oz) | Bullet 750 (25 oz) / 950 (32 oz) |
| Material | High-Density Food-Grade Plastic (BPA Free) | |
| Construction | Precision Threaded Vacuum Stopper | |
| Maintenance | Sanitary / Easy-to-clean design | |
| Best Use | Thermos Maintenance & Repair | |
| Product Type | Original Replacement Accessory | |
Key features
- Genuine OEM part - manufactured specifically for Terra Incognita Bullet flasks, so the threading and seal match the original exactly.
- Airtight vacuum seal - precision threading locks down for a tight fit that preserves the flask's insulation and 24-hour hold.
- BPA-free food-grade plastic - the non-toxic, high-density material stays safe in daily contact with hot and cold drinks.
- Impact and heat resistant - a rugged build handles the pressure and temperatures of backcountry use without cracking or warping.
- Fits the full Bullet range - correct dimensions for the 500 ml (17 oz) and 750/950 ml (25/32 oz) flasks in one part.
- Featherlight 19 g - at just 0.67 oz it is a trivial spare to keep at home or pack for a long trip.
- Restores lost performance - a fresh, unworn seal recovers the temperature retention a stretched or missing stopper takes away.
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. Every item carries a 12-month manufacturer warranty, and the design is tested in the field by the people who guide the trips.
Bullet Stopper FAQ
Which flasks does this replacement stopper fit?
It fits the Terra Incognita Bullet vacuum flask series in all three sizes: 500 ml (17 oz), 750 ml, and 950 ml (25/32 oz). The dimensions are optimized specifically for these models, so one stopper covers the full range.
Is the stopper BPA-free?
Yes. The stopper is molded from high-density, food-grade plastic that is 100% BPA-free and non-toxic. It is safe for repeated contact with both hot and cold drinks and is built to withstand backcountry temperatures and knocks.
Will a new stopper restore my flask's insulation?
Yes. Because a vacuum flask relies on an airtight closure, a worn or missing stopper is a common reason a flask stops holding temperature. This genuine OEM part reseals the neck precisely and restores the original heat and cold retention.
Is this a genuine Terra Incognita part?
Yes. This is the genuine OEM replacement stopper made specifically for Terra Incognita Bullet flasks, not a generic substitute. Its precision threading matches the original, ensuring a correct fit and a reliable vacuum seal.
How much does the replacement stopper weigh?
The stopper weighs just 19 g (0.67 oz). It is a lightweight, low-cost spare worth keeping at home or packing on long trips so a lost or damaged cap never sidelines your insulated flask.
Related gear
See more in Accessories Kitchen & Utensils, Kitchen & Utensils, Krab Pot Gripper, Tais Reduktor Stove.
This is the genuine Terra Incognita replacement stopper for the Bullet vacuum flask series, fitting the 500, 750, and 950 ml models. Molded from high-density, BPA-free food-grade plastic, it restores the airtight vacuum seal that keeps a Bullet flask holding temperature - the exact OEM part rather than a generic substitute. At 19 g (0.67 oz), it is the inexpensive fix that brings a well-used flask back to full performance instead of retiring it.
Terra Incognita is a European outdoor brand with more than 18 years of expedition experience and its own gear production, and offering spare parts like this stopper reflects a repair-first approach to gear. Lids and seals are the components that wear or go missing first, so a precise-fit replacement means your insulated flask keeps working for years rather than heading to the bin over one lost cap.
Who is the Bullet Stopper for?
This replacement is for anyone who owns a Terra Incognita Bullet flask and has lost, cracked, or worn out the original stopper. If your flask has stopped holding heat as well as it used to, a tired seal is often the cause, and swapping the stopper is the simplest fix. It is also smart insurance to keep a spare on hand before a long expedition.
Why does the Bullet Stopper need a genuine seal?
A vacuum flask keeps its temperature only as long as the closure seals perfectly against the neck. Generic stoppers rarely match the thread pitch and gasket geometry of the original, leaving tiny gaps that let heat escape and drinks cool early. Because this part is the OEM stopper cut to the Bullet's exact dimensions, it seats fully and restores the airtight seal the flask was designed around.
Which Bullet flasks fit the Bullet Stopper?
One stopper covers the whole Bullet lineup - the 500 ml (17 oz), 750 ml, and 950 ml (25/32 oz) flasks share the same optimized closure dimensions. Thread it into a clean, dry neck until it seats firmly, and the flask is ready to hold temperature again. The high-density plastic resists the heat of boiling water and the knocks of trail use.
Specifications
| Characteristic | Bullet 500 Stopper | Bullet 750/950 Stopper |
|---|---|---|
| Weight (US) | 0.67 oz | 0.88 oz |
| Weight (EU) | 19 g | 25 g |
| Compatible Models | Bullet 500 (17 oz) | Bullet 750 (25 oz) / 950 (32 oz) |
| Material | High-Density Food-Grade Plastic (BPA Free) | |
| Construction | Precision Threaded Vacuum Stopper | |
| Maintenance | Sanitary / Easy-to-clean design | |
| Best Use | Thermos Maintenance & Repair | |
| Product Type | Original Replacement Accessory | |
Key features
- Genuine OEM part - manufactured specifically for Terra Incognita Bullet flasks, so the threading and seal match the original exactly.
- Airtight vacuum seal - precision threading locks down for a tight fit that preserves the flask's insulation and 24-hour hold.
- BPA-free food-grade plastic - the non-toxic, high-density material stays safe in daily contact with hot and cold drinks.
- Impact and heat resistant - a rugged build handles the pressure and temperatures of backcountry use without cracking or warping.
- Fits the full Bullet range - correct dimensions for the 500 ml (17 oz) and 750/950 ml (25/32 oz) flasks in one part.
- Featherlight 19 g - at just 0.67 oz it is a trivial spare to keep at home or pack for a long trip.
- Restores lost performance - a fresh, unworn seal recovers the temperature retention a stretched or missing stopper takes away.
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. Every item carries a 12-month manufacturer warranty, and the design is tested in the field by the people who guide the trips.
Bullet Stopper FAQ
Which flasks does this replacement stopper fit?
It fits the Terra Incognita Bullet vacuum flask series in all three sizes: 500 ml (17 oz), 750 ml, and 950 ml (25/32 oz). The dimensions are optimized specifically for these models, so one stopper covers the full range.
Is the stopper BPA-free?
Yes. The stopper is molded from high-density, food-grade plastic that is 100% BPA-free and non-toxic. It is safe for repeated contact with both hot and cold drinks and is built to withstand backcountry temperatures and knocks.
Will a new stopper restore my flask's insulation?
Yes. Because a vacuum flask relies on an airtight closure, a worn or missing stopper is a common reason a flask stops holding temperature. This genuine OEM part reseals the neck precisely and restores the original heat and cold retention.
Is this a genuine Terra Incognita part?
Yes. This is the genuine OEM replacement stopper made specifically for Terra Incognita Bullet flasks, not a generic substitute. Its precision threading matches the original, ensuring a correct fit and a reliable vacuum seal.
How much does the replacement stopper weigh?
The stopper weighs just 19 g (0.67 oz). It is a lightweight, low-cost spare worth keeping at home or packing on long trips so a lost or damaged cap never sidelines your insulated flask.
Related gear
See more in Accessories Kitchen & Utensils, Kitchen & Utensils, Krab Pot Gripper, Tais Reduktor Stove.
You may also like
