硅胶帽

https://www.alibaba.com/product-detail/all-purpose-anti-dust-T-type_62365680151.html?spm=a2700.galleryofferlist.0.0.71cd1a73Z7MflU“通用防尘T型硅橡胶孔塞止动器端盖止动器，用于套筒推入式阀杆缓冲器”产品代码：R-5。1-8一般尺寸：8 x 6 mm