terminal blocks J7 of products for the low-frequency electrical connectors, J7W is sealing type, with GJB176A-86 standard ... J7,military connectors J7 series of products for the low-frequency electrical connectors, J7W is sealing type, with GJB176A ... Prevention Chap design, termination of welding, is small in size, light weight characteristics, widely used in strategic weapons systems, NASA satellite ...