recertification stamp for propane cylinders, I have seen both rectangle like this one and oval stamps and I don’t know if they are universal…
MM XXX YY E
MM -> 2 digit recertification month
XXX ->3 character Re-qualifier’s registration number
YY -> 2 digit recertification year
E ->States the cylinder has been externally examined only
There are different levels of requalification that can be done…
If your propane tank has been requalified, the requalification date will usually be printed on an oval sticker and affixed to the collar of the tank…
If the date on the sticker does not have a letter to the right of it, your propane tank needs to be requalified within 12 years of the date on the sticker...
If the date printed on the sticker has a letter "S" to the right of it, then your propane tank needs to be requalified within 7 years of the date printed on the sticker...
If the date printed on the sticker has the letter "E" to the right of it, then your propane tank needs to be requalified within 5 years of the date printed on the sticker...
