Replacement parts available here.

There are lots of good recipes on the internet for home made foaming soap, and they are all pretty similar.

Use somewhere between a 1:4 and 1:6 ratio of soap:water. Any liquid soap will work.
First put warm water in your jar. Then carefully add the soap so it doesn't get bubbly. Add a few drops of essential oils or some vegetable glycerin if you want to.
Screw the lid with the pump onto the jar, and mix the contents up.
Enjoy!

The pumps come with the collar that attaches them to one of our soap pump adapter lids and 4" tube that you can cut to fit any size jar. Pint and quart jars work well. The pump mechanism plus straw is about 6" long, which means it comes to about one inch from the bottom of a quart jar.

Be sure to cut the tube short enough that it does not touch the bottom of your jar. If the tube is touching the bottom, the plastic collar will work its way off the bottom much more quickly. You can use a drop of super glue between the plastic collar and pump if you find the collar comes loose too often.

They are made of stainless steel and plastic. The satin finish looks like a natural or brushed stainless steel. While the charcoal black has a lovely, matte black finish. The threading is 28/400.

We also carry a variety of different colors and styles of regular (non-foaming) soap pumps for Mason jars, so you are sure to find the perfect one!

Troubleshooting:

First, there may be some water built up in the air chamber in the pump (this is the plastic housing that contains the spring). To expel any water from the chamber, you can hold the pump upside down and squirt it a few times. There may also just be some build-up in the pump itself which can typically be cleared by dispensing hot water through your pump until clean water is coming out.

If that doesn't seem to be enough, you may need to remove and clean the aeration filter itself. This is a small cylindrical piece that can be accessed by pulling the pump head up and off the base. This can either be rinsed with warm water or soaked in a mixture of warm water, baking soda, and vinegar to remove anything stubborn. You can buy a replacement filter here.