General 1A-25A, Unifilter 77, Sears 8055, Sid Harvey XF-25/264, Mitco 264, AutoFlo F-300, etc. So many numbers for the same product!
1A-30 is the Replacement Cartridge for the 1A-25B filter assembly. Think they made it confusing on purpose???
No. You want to use the RF4B Home Depot does offer this on its web site as well
There is not. It basically says "make sure there are no leaks" I would want it snug enough to make sure any latent vibrations do no make it lose but not so tight as to distort it and create a leak.
Sid Harvey is a wholesaler, not a manufacturer. So I can;t be certain who made the private label filter body that is in your home. However from what I see on there web site this should be a suitable replacement for your housing.
I am sorry but the number you have indicated is unfamiliar to me. I tried searching for it on line but nothing came back. At least nothing that was an oil filter.
K1 and home heating oil are both #2 oil so to that extent if will work. However some appliances that use Kerosene require specific filtration. I would consult the owners manual of you appliance to see if there are specific filtration specs called out.
It should work just fine.
Yes it should work just fine. Some trades people prefer the traditional wool and others the synthetic.