What kind of capacitor is this?

I tested it and is says its 2nf and its on a 24 vac circuit. I looked up everywhere trying to find the code with no luck

The closest match I can find if for a Varistor. 495-4376-ND. The datasheet shows the manufacture number B72207S0350K101 is listed as a type S07K35, and the 07K35 matches what if printed on the part.
The datasheet lists this as a 35VAC Varistor, 7mm diameter disc, with a Max width of 9mm, and a thickness of 3.9mm. This also has a lead spacing of 5mm.

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Thanks a million