Replacement gasket for Marukiru water bottles! 【Material and Design】 Silicone rubber is extremely superior in heat resistance and cold resistance compared to organic rubber. It shows almost no change in properties at 150°C and can be used semi-permanently. It is characterized by a color close to the genuine red-brown. It is more durable than the original. I own about 15 Marukiru water bottles of different ages, and I tried putting these gaskets in each one. They felt stiff at first, but gradually became more comfortable. Of course, there was no problem washing them in the dishwasher. ※For those having trouble with deteriorated gaskets I made these for myself, but I have some extras, so I'm offering them at a low price! Please peel off the sticker on the rubber before use. Those who purchase two or more will get a slightly lower price. - Material: Rubber - Color: Red-brown - Color: Genuine color Thank you for viewing.