O ring size for the Garmin Mk2i spool.

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Legenderyi

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Location
Taiwan
# of dives
200 - 499
Does anyone know the size of the O-ring used on the larger end of the Garmin Mk2i transmitter spool? Is it the same size as the one on the smaller end? The O ring burst and I'm hoping to replace it instead of buying a new spool (40 bucks cad :shocked:).


garmin spool.jpg
 
003 on both


Edit: I’m off, Garmin does weird things
 
I’d like to think you’re off a zero, but shipping logistics maybe are difficult?


 
I found this on the Garmin site For o-ring replacement.

Air Spool (Accessory)​

Image of Air Spool

  • Large (Hose) Side - 3.3mm x 1mm
  • Small Side - 1.5mm x 1.5mm
 
003 on both

Nope, the Garmin T1 does not use a standard spool. See pic.

garmin_spool.jpg


The smaller side is the normal size that goes into the hose end, the larger is the one that goes into the transmitter.

The transmitter should've come with a flow limiter for use when attaching directly into the first stage. You may be able to take the oring off that and use it. [Disclaimer: I haven't tried, not sure how hard (or possible) it is to remove without damaging]
 
I stand corrected. That’s obnoxious.
 
@Legenderyi I managed to remove the oring from my flow limiter (which I'm not using) without too much trouble. I used a very pointy plastic pick, and was very careful not to poke the oring. So definitely possible.

If you don't have the flow limiter to steal an oring from, I measured mine with digital calipers, and then cross-referenced against a metric oring chart, it appears to be a 1.1x3 (ID=3.0mm, CS=1.1mm, OD=5.2mm)

Edit: Didn't refresh to see @Open Ocean Diver 's response. Looks like my measurements were a touch off.

 
I got quoted by Garmin In Taiwan for the replacement part which is 945nt (approx 40 cad). So unfortunately not :/
I’d like to think you’re off a zero, but shipping logistics maybe are difficult?


 
@Legenderyi I managed to remove the oring from my flow limiter (which I'm not using) without too much trouble. I used a very pointy plastic pick, and was very careful not to poke the oring. So definitely possible.

If you don't have the flow limiter to steal an oring from, I measured mine with digital calipers, and then cross-referenced against a metric oring chart, it appears to be a 1.1x3 (ID=3.0mm, CS=1.1mm, OD=5.2mm)

Edit: Didn't refresh to see @Open Ocean Diver 's response. Looks like my measurements were a touch off.


Thanks for the tip. I had the same idea but wasn't sure if it was the same sizing as the Oring was already gone by the time it got to me (It's a buddies Transmitter). I'll try removing the O ring from the air restricotr and replacing the one on the spool tonight. Cheers.
 
https://www.shearwater.com/products/swift/

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