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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CXWXC 16g / 25g Threaded CO2 Cartridges for Bike Tires

CXWXC 16g / 25g Threaded CO2 Cartridges for Bike Tires

Product ID: 270771009

Details

Brand
CXWXC
Color
16g x 5 Pack
Item Weight
0.16 g
Material
Alloy Steel
Power Source
Hand Pump

⚡Inflates MTB tire to 40psi in seconds

🔩Universal 3/8-24 threaded compatibility

🪶Compact & lightweight, fits jersey pocket

69.81 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♂️ Inflate Fast, Ride Faster – Never Miss a Mile!

RAPID TIRE RESCUE - Get back on the trail in seconds with 16g CO2 power ⚡
ECO CONSCIOUS SAFE - Recyclable alloy steel cartridges with safety-first usage ♻️
ULTRA PORTABLE DESIGN - Sleek, lightweight cartridges that fit anywhere 🪶
SEAMLESS COMPATIBILITY - Works with all standard threaded CO2 inflators 🔩
HIGH PRESSURE PERFORMANCE - Inflates road tires up to 100psi for peak performance 🚴‍♂️

The CXWXC 16g / 25g Threaded CO2 Cartridges deliver rapid inflation for both mountain and road bike tires, filling a 26” MTB tire to 40psi in a single shot. Compact and lightweight, these alloy steel cartridges fit easily in your saddlebag or jersey pocket and are compatible with all standard 3/8-24 threaded CO2 inflators. Designed for quick, on-the-go tire inflation with a maximum pressure of 100psi, they offer a reliable, recyclable solution for cyclists who demand speed and convenience without compromise.

Specifications

ASIN	B08HH63BBP
Best Sellers Rank	#3,116 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Bike CO2 Pump Systems
Brand	CXWXC
Brand Name	CXWXC
Color	16g x 5 Pack
Customer Reviews	4.6 out of 5 stars 561 Reviews
Included Components	No
Item Highlight	Cartridge for CO2 Inflator with Threaded Connection, CO2 Pump for Road and Mountain Bikes
Item Type Name	CO2 Cartridges
Item Weight	0.16 g
Manufacturer	CXWXC
Manufacturer Part Number	CO2-CXBT-5P
Material	Alloy Steel
Material Type	Alloy Steel
Maximum Pressure	100 psi
Number of Items	5
Number of Packs	5
Operation Mode	Manual
Power Source	Hand Pump
Warranty Description	1

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