Which type of cable would be suitable for use with the cable joint with the elastic sealing ring for the explosive device?

Cable A is not suitable for A septum seal joint because the Cable is irregular in shape, so it does not have an effective seal effect.

Cable B, D&E is not suitable for the septum seal joint because the white area of the Cable is empty, and there is no Cable sheath inside it.

Cable C is the best of the five Cable types to be used in the insulation joint, which is in line with the IEC 60079-14 standard, which has the Cable sheath, so there is no gas circuit.