can these be used instead of refill kit for personal floatation device?

There are two things you need to know in order to see if these co2 cartridges will work for personal floatation device. I happened to own a PFD for my boat as well. First, these cartridges were 3/8 24 thread and my PFD use 1/2" thread co2 cartridges. I am not sure about yours. Also capacity of the co2 cartriges, this one is only 16g and most PFD will need 24g or higher. Since bike tire air volume is smaller than a PFD volume and it might not fill your PFD fully. Hope this help.

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16g / 25g Threaded CO2 Cartridges or CO2 Inflator for Bike Tires - Cartridge for CO2 Inflator with Threaded Connection, CO2 Pump for Road and Mountain Bikes

Product ID: 365927489

Details

Brand
CXWXC
Colour
16g x 12 Pack
Item weight
0.02 Kilograms
Material
Alloy Steel
Power source
No Power

👜Compact & lightweight, fits jersey pocket

⚙️3/8-24 threaded connection fits all inflators

🚴‍♂️16g inflates MTB tire to 40psi in 1 shot

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2108948₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Inflate Fast, Ride Faster — Never Miss a Mile!

POCKET SIZED POWER - Ultra-compact and featherlight design slips easily into your saddle bag or jersey pocket—ride light, ride fast.
RAPID TIRE REVIVAL - Get back on the trail in seconds with a single 16g cartridge blast that inflates a 26” MTB tire to 40psi—no more waiting around.
RACE READY PRESSURE - Inflates road bike tires up to 100psi and mountain bike tires to 40psi, perfect for high-performance rides and quick fixes.
UNIVERSAL THREADED FIT - Seamlessly compatible with all 3/8-24 threaded CO2 inflators, ensuring hassle-free use with your existing gear.
SAFETY SUSTAINABILITY - Recyclable alloy steel cartridges with clear safety guidelines—protect your hands and the planet while staying race-ready.

The CXWXC 16g/25g threaded CO2 cartridges deliver rapid inflation for road and mountain bike tires with a universal 3/8-24 thread fit. Compact and lightweight, these alloy steel cartridges inflate a 26” MTB tire to 40psi in a single shot, making them essential for fast roadside repairs. Designed for professional riders who demand speed and convenience, they come with safety instructions and are fully recyclable.

Specifications

ASIN	B091DP68C8
Best Sellers Rank	#1,824 in Sporting Goods ( See Top 100 in Sporting Goods ) #80 in Cycling Accessories
Brand Name	CXWXC
Color	16g x 12 Pack
Customer Reviews	4.6 4.6 out of 5 stars (1,108)
Included Components	No
Item Type Name	CO2 Cartridges
Item Weight	0.02 Kilograms
Manufacturer	CXWXC
Manufacturer Part Number	CO2-CXBT
Material Type	Alloy Steel
Maximum Pressure	40 Pound per Square Inch
Operation Mode	Manual
Power Source	No Power Source
Unit Count	12 Count

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2108948₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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