25Z5 NU-25Z5 RECTIFIER VACUUM TUBE NEW OLD STOCK - VARIOUS BRANDS FOR SALE

New-Old-Stock (NOS) tube. The 25Z5 is a heater-cathode type full-wave high-vacuum rectifier doubler tube designed for use in the power supply of a-c or a-c/d-c receivers. Eletrically the 25Z5, 25Z6, and 25Z6GT are identical. The brands we ship are from American manufacturers and may have the original box or an industrial box of current manufacture.