Up for sale here is this lot of 10 brand new Nichicon KL low-leakage electrolytic capacitors. These are 0.68 uf 50v radial capacitors, and will work great for you. The body of each capacitor measures about 11mm long and 5mm in diameter, and these have a 2mm pitch.
These are all brand new caps, made in early 2023. They are rated at 105C and are rated for 1000 hours at that temperature. These are really nice caps! Please see my pictures for details.
US shipping and handling is $7, and international is $21, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.