Why is lead sheaths are used in the cable?

Lead sheaths are used in cables primarily for their Excellent shielding properties, providing protection against electromagnetic interference (EMI) and radio frequency interference (RFI). They also offer mechanical protection, safeguarding the cables from physical damage and environmental factors such as moisture and corrosive substances. Additionally, lead has a high density, which helps in preventing the ingress of water and other harmful elements, ensuring the longevity and reliability of the cable.