Yes, all of the T-Ester bottle parts (i.e. bottle, nipple, cap and hood) can be sterilised by UV sterilizer.
When using UV sterilizer with drying function, it is necessary to place the bottle body at least 1 inch (2.54cm) away from the inner wall/ceiling where the air ventilation outlet is. This may avoid any damage or deterioration of the bottle.
However, please look out for the signs of aging – it is recommended to replace the product when it starts to discolor and/or turn cloudy.