Review on Kissler PB4993 Delta Style Springs by Troy Boren

hot water side seat broken after 2 months. Bought another set from another brand. The hot water side also broke again after 2 months. The faucet has a new valve and no reason to break. The final materials in these seats don't have to be like the old OEM seats. I bought 10 because I knew I would have to keep replacing them. The original set lasted 19 years. Now replaced 4 times a year on the hot water side.