This kind of switch is silent, often used in car industry.

KAN3511B: 160gf/ 260gf, 6*3.5*H, 50,000cycles mini smd tact switch.

KAN3531: 3.5*6.*H, Mini SMD type tactile switch

KAN3543: Mini SMD type tactile switch with 2 pins.

12vDC 50mA, 2 Pin smd type tactile switch

KAN354: SMD mini size tactlie switch