Still leaking after replacing seal

Washer leaking - replaced seal. Still leaking - appears to be from left side (when facing dishwasher) on the underside. It is a large amount of water and it happens more than once during the cycle. Possibly during a draining part of a cycle? It is an exceptionally large amount of water (1 body sized bath towel is saturated, and there is still moisture on the floor)

Frigidaire PLD2560LCC1

Is it possible it may be leaking from around where the heating element inserts to the tub? One of the two o-rings there looks a little worse for wear? Can I get a replacement o-ring only? The heater works great!

Here are your parts
Replacement parts for FRIGIDAIRE PLD2560LCC1 Frigidaire/dishwasher | AppliancePartsPros.com

You have to locate the leak.
It may be spraying up and then dripping down parts till it gets to a low point.
The easiest way is to use a flashlight and a mirror.
Since it is not a good idea to have your hands under the unit when it is running a small mirror on a long handle is best. Like the type mechanics use or you could just tape a small mirror to a piece of doweling.

I do not see the heater gaskets as a separate item but that does not necesarilly mean they are not available, you will have to call AppliancePartsPros.

Another possibility would be to use the following but I am not sure about the size as they are for a Whirlpool.
AP6010750

Do not over tighten them.