Product review (5 stars): OE part for Samsung
I'm not exactly sure I "love it," but it is the OEM part for my Samsung WF409ANW/XAA washer.

This is much easier to install if you lube the outer circumference first.  I ran a bead of non-toxic silicone aquarium caulk around the outside and also along the inside of the bore in the tub.  The seal then slid in with minimal effort.  Do not pound it in with a mallet the way some videos on Youtube seem to suggest you should do.

Also, take careful note of how far your old seal is recessed in the tub before you pull it out.  The mounting area for the seal in my washer's rear tub is much deeper than the actual seal.  Mounting it flush with the surface causes the seal to ride too close to the rear of the spider bracket, and pushing it all the way in causes it to barely make contact with the mating surface of the shaft.  There is some tolerance, but you have to be careful.  I made 0.060" shims with cut up credit cards to center the seal on the mating area of the spider shaft.