Rubber gasket for wristwatches, repair parts, O-rings Rubber thickness: 0.7mm, 10 diameters (31mm to 40mm) 2 pieces of each, total 20 pieces. 31mm 32mm 33mm 34mm 35mm 36mm 37mm 38mm 39mm 40mm It is recommended to replace the rubber gasket at the same time when replacing the watch battery. When shipped together with the rubber gasket, we offer silicone grease for watch rubber gaskets, which is sold separately, at a slightly lower price than usual. 【Caution】 ※ These rubber gaskets are basically round type O-rings for round (circular) watches. ※ Depending on the diameter, the circle of the rubber gasket before installation may be slightly distorted as shown in the second image, but it will become circular when installed. ※ We will ship them together in one zipper bag as shown in the third image. ----- The following options can be added. If you wish, please comment before purchasing and we will accommodate. ・ Silicone grease for rubber gaskets 1 piece +350 yen ・ Yu-packet Post mini shipping +100 yen ・ Yu-packet Post shipping +130 yen ----- 【About Silicone Grease】 Silicone grease is for watch lid rubber gaskets. By applying a small amount to the rubber gasket with your hands, it becomes easier to fit the gasket into the lid, and the waterproofness and durability of the rubber gasket are slightly increased. We inspect them, but they are made overseas, so please be aware if you are concerned. ◆◆◆ ↓ We are selling various sizes of rubber gaskets and silicone grease. #swWatchSuppliesList We will discount the difference in shipping costs when shipped together. ( -90 yen ~ for each additional item) ◆◆◆ If you have any other questions, please feel free to ask.