Changing the sediment filter in a whole house well water filtration system. Removing the water filter housing can be a real pain without the proper technique. My model is a Purwater FHT-34V, the O-ring is part number ORG006, and I use standard 30 micron sediment filters. See the links below for the parts I used:

Standard Sediment Filters:
https://amzn.to/3byfMeK (affiliate*)

Water Filter Wrench:
https://amzn.to/4bEjAeo (affiliate*)

Universal Strap Wrench:
https://amzn.to/3OGuJRK (affiliate*)

O-ring (3 pack):
https://amzn.to/3vurjoZ (affiliate*)

O-ring (6 pack):
https://amzn.to/3iL2nGZ (affiliate*)

*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!