Gas loss of my barrel

[AndyGT]

Hi All.
On my 3rd brew now as a novice and my brew is gasless.
Did my fermentation as per guidance gravity all ok added hops as per guidance siphoned off into a plastic barrel and primed with dextrose and left for 10 days before moving to a dark cool place I poured enoth to check the gravity again and the beer is flat so I'm guessing the lid seal on the barrel has leaked.
What's my best option as charging with co2 will be difficult as my barrel has 40 pints in it.
Any advice would help how to try and get some gas into the brew.
Ps it's an IPA.
CHEERS

 

[Dutto]

Add more sugar then lightly Vaseline the threads and “O” ring on the top cap and tighten it up.

After a couple of leaky caps I started to use Vaseline (I can’t taste it so …?) and a leather oil filter strap, to ensure that the cap was tight - and I never had another failure!
:hat:

 

[Yellow Car]

I always crack the tap open a fraction after 24 hours of carbonation. If the barrel has sealed properly you'll have good pressure by then, and if not you've still got time to sort it out.

 

[AndyGT]

Add more sugar then lightly Vaseline the threads and “O” ring on the top cap and tighten it up.

After a couple of leaky caps I started to use Vaseline (I can’t taste it so …?) and a leather oil filter strap, to ensure that the cap was tight - and I never had another failure!
:hat:

CHEERS I'll try that

 

[Buffers brewery]

If your barrel has a Hambleton Bard valve in the cap (which it probably does) that could be the source of your leak. Spray it with soapy water solution and check for bubbles.

 

[user 43495]

Replace the rubber seals on the valve. Then gas it up again