Rubber boots, also known as dust boots or protective boots, are flexible covers made from durable rubber or synthetic materials that protect moving suspension and steering components like ball joints, tie rod ends, rack ends and CV joints. Their main function is to seal out dirt, water and debris while keeping vital lubricants inside, ensuring smooth operation and preventing premature wear. Although small, rubber boots play a big role in extending the life of key parts by shielding them from harsh road conditions. If a rubber boot gets torn or cracked, contaminants can quickly damage the joint it protects, leading to costly repairs; so timely replacement is important for maintaining suspension and steering health.