# Tandem infusion set won’t connect
**URL:** https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228
**Category:** Type 1 & LADA
**Tags:** tandem, tandem-x2, infusion-sets
**Created:** [October 8, 2022, 5:23pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228 "2022-10-08T17:23:14Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@drpepper68](https://forum.fudiabetes.org/u/drpepper68)
#### Post date: [October 8, 2022, 5:23pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/1 "2022-10-08T17:23:14Z")
Ok I have been out of the pump game for awhile as just didn’t feel like wearing mine so went back to shots but I wanted to try out the new bolus from pump thing with my tandem x2. So I loaded cartridge with insulin then tried to connect my auto soft 90 infusion set and no matter how many times I try it won’t fit. Too small. So I check the box 10 times and yep it’s made by tandem and says tlock so I’m super confused. Did something change while I was under a rock?
Also someone mentioned fifty 50 pharmacy for pump supplies but there website doesn’t show anything for infusion sets or pump supplies. Shows two items only.
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### Author:  [@Teerok](https://forum.fudiabetes.org/u/Teerok)
#### Post date: [October 8, 2022, 6:32pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/2 "2022-10-08T18:32:12Z")
Are you saying your cartridge won’t fit into the T Slim or are you having issues connecting the infusion set/tube to the cartridge?
The only explanation I can think of is that the cartridge and infusion sets are from different versions.
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### Author:  [@MM2](https://forum.fudiabetes.org/u/MM2)
#### Post date: [October 8, 2022, 7:35pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/3 "2022-10-08T19:35:43Z")
> [@drpepper68](#):
>
> So I check the box 10 times and yep it’s made by tandem and says tlock
Does the box/label also say X2
Or does it say T:Flex?
> **[Search | Byram Healthcare](https://www.byramhealthcare.com/product-and-services/catalog/search?keyword=Tandem%20X2%20cartridge)**
>
> Byram Healthcare is a national leader in disposable medical supplies delivered directly to patient's homes while conveniently billing insurance plans.
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### Author:  [@drpepper68](https://forum.fudiabetes.org/u/drpepper68)
#### Post date: [October 8, 2022, 7:38pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/4 "2022-10-08T19:38:07Z")
The infusion set connector won’t fit into the cartridge connector. I’m thinking maybe the cartridge is older and not using there new T-lock type?
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### Author:  [@MM2](https://forum.fudiabetes.org/u/MM2)
#### Post date: [October 8, 2022, 9:12pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/5 "2022-10-08T21:12:33Z")
> [@drpepper68](#):
>
> I’m thinking maybe the cartridge is older and not using there new T-lock type?
Correct, there are 2 different (but similar) cartridges. You can check the image from the byram link.
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### Author:  [@drpepper68](https://forum.fudiabetes.org/u/drpepper68)
#### Post date: [October 9, 2022, 1:24pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/6 "2022-10-09T13:24:46Z")
Ah ok thanks! I wonder if tandem will swap them out since they are useless to me.
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### Author:  [@bkh](https://forum.fudiabetes.org/u/bkh)
#### Post date: [October 9, 2022, 2:12pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/7 "2022-10-09T14:12:07Z")
Why useless? The old t:slim cartridges work with any infusion sets that have a standard luer-lock connector. For instance, the Medtronic Quick-set luer-lock infusion sets work great with the old-style tandem cartridges, and I for one greatly prefer them to the infusion sets that Tandem sells.
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### Author:  [@drpepper68](https://forum.fudiabetes.org/u/drpepper68)
#### Post date: [October 9, 2022, 2:13pm UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/8 "2022-10-09T14:13:12Z")
Oh that’s true and I actually have some Medtronic ones left I think.
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### Author:  [@TommyGadd](https://forum.fudiabetes.org/u/TommyGadd)
#### Post date: [May 1, 2023, 3:44am UTC](https://forum.fudiabetes.org/t/tandem-infusion-set-won-t-connect/13228/9 "2023-05-01T03:44:49Z")
Yes they will!!! All you have to do is contact them and explain what goin on. They will exchange them.