Bring to a rolling boil the vinegar, sugar, mustard seed, and celery seed.
To within 12" of the top, add brine to the peppers.
Put the lid and ring on after wiping the rim clean.
If you can wait that long, leave the peppers to marinade for at least a week.
If you'd rather, you can also adhere to the recommended canning protocols and process the food in a water bath canner. For time and proper sterilization, adhere to the USDA recommendations. If you plan to store the containers on a shelf, make sure to check that the lids are completely closed.