A lubricant helps reduce friction between moving surfaces. Lubricants may also transport foreign particles. Lubricants prevent corrosion and have a high boiling point and a low freezing point. Lubricants are extensively used in the form of motor oil in motor vehicles and powered equipment. Lubricants contain 90% base oil. Lubricants are also used in cooking, such as oils and fats in frying pans, in baking to prevent food sticking, for artificial joints and in ultrasound examinations among others. Lubricants, in short keep moving parts apart, effectively carries away contaminants and debris, which ensures long-life. Lubricants act as a seal for gases and also prevent risks of smoke and fire of objects.