浸聚四氟乙烯的石棉垫片
PTFE impregnated asbestos gasket
金属包石棉平垫片
flat metal jacketed asbestos filled gasket
金属包层波导
Metal-clad Planar Waveguides
metal crystal
镀锌金属包塑软管
zinc-plating metal plastics-coated hose
双夹套波纹金属包石棉垫片
corrugated metal double jacketed asbestos filled gasket
波纹金属接合填密环
corrugated metal joint ring
无石墨压缩白石棉垫片
non graphited compressed white asbestos gasket