石墨填料环 OTH-0010A

石墨填料环 OTH-0010B

复合开口式油封 OTH-C80

单剖分式油封 OTH-C81

浮动油封 OTH-FS01/FS02

煤矿液压支架密封

耐高温预紧碟形弹簧 OTH-2320T

缓冲拉伸碟形弹簧 OTH-2330

高扭力预紧碟形弹簧 OTH-2320G

高温预紧碟形弹簧 OTH-2320T

软填料OTH-00202

软填料 OTH-0020