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A.0.15mm～0.20mm
B.0.18mm～0.20mm
C.0.20mm～0.25mm
D.0.20mm～0.30mm

A.彈簧座、軸封彈簧、轉(zhuǎn)動(dòng)摩擦環(huán)和固定摩擦環(huán)
B.彈簧座、軸封彈簧、鋼圈、橡膠密封圈
C.彈簧座、軸封彈簧、鋼圈、橡膠密封圈、轉(zhuǎn)動(dòng)摩擦環(huán)
D.彈簧座、軸封彈簧、鋼圈、橡膠密封圈、轉(zhuǎn)動(dòng)摩擦環(huán)和固定摩擦環(huán)