Product review (5 stars): Very good. No special tools required
Very good . No special tools required.
Go to you tube and watch video.
Use dish soap,.
Extra pair of hands required but if you can change a motorcycle or bicycle tire you can handle this without the two pairs of $69.99 each special  pliers sold by LG.
Butter knife to remove outer retainer.inner spring just unhook and have person hold at 3 o'clock while you use a Phillips head and needle nose pliers to reconnect spring.
Outer can be slipped over with flat head screwdriver.
Good luck!
Its a quality gasket.
It might be OEM but not sure.