Stir pumpkin, sure gel, orange juice, and spices together in a large pot, and bring to a boil
Once it has reached a rolling boil that can’t be stirred down, stir in the sugar, and stir until it dissolves
Bring back to a rolling boil, that can’t be stirred down, and continue boiling for 90 seconds
Remove from heat and ladle into sterilized jars
Wipe rims of jars with a clean cloth to remove any debris, and fit with sterilized lids and bands.
Place jars into a prepared pressure canner (see how to use a pressure canner), and vent steam for 10 minutes.
Close vent and heat to 10 pounds of pressure for 15 minutes for half pints, and 20 minutes for pints.
Remove from heat and let pressure return to zero naturally before removing lid.
After that, you can continue letting jars cool in the canner, or carefully remove jars and place them out of the way. I recommend covering them with a towel to protect from drafts which can cause extremely hot jars to crack and break.
Once cool, check for seal, and after 24 hours, bands may be removed and jars stored.