Inflatable Life Jacket Dissolving Pill


This replacement dissolving pill bobbin is actually filled with a proprietary blend of pharmaceutical-grade microcrystalline cellulose commonly used in manufacturing medications. It's also used in many inflatable life jackets with Halkey-Roberts inflation mechanisms. It quickly dissolves on contact with water. Replacement of this bobbin in your SOS Marine dan buoy is recommended every third year.

Available on backorder

SKU: DB100-PILL Categories: , Tags: , , ,


This replacement dissolving pill bobbin is the same part included in your SOS Marine dan buoy. It’s included in the dan buoy recharge kit. Every third year replacement is suggested; you can install it yourself.

How it Works

After you throw the dan buoy into the water, the custom-formed pill material inside the bobbin dissolves within seconds, which allows a spring loaded mechanism to puncture the CO2 cylinder. Within seven seconds, the SOS Marine dan buoy self inflates. For complete dan buoy information, including a user manual with servicing instructions, click to the man overboard buoy page.

Product Literature

From manufacturer Halkey–Roberts, here is more information on this part.


Check the FAQs for answers to questions about the dan buoy.

Inflatable Life Jacket Dissolving Pill was last modified: July 17th, 2024 by

Additional information

Weight 0.0625 lbs
Manufacturer part number


Dimensions (metric)

19 x 19 x 7 mm


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