O型橡胶密封圈规格（GB1235-76）材料：丁腈（NBR）GB12325-76标准O型圈尺寸标记方法：外径x截面编号规格实际内径单价（元）编号规格实际内径单价（元）15x1.91.70.072640x3.134.50.3226x1.92.70.072745x3.139.50.3537x1.93.70.072850x3.144.50.3548x1.94.70.082955x3.149.50.4559x1.95.70.083060x3.154.50.45610x1.96.70.093163x3.157.50.50711x1.97.70.103265x3.159.50.50812x1.98.70.103368x3.162.50.60913x1.99.70.103470x3....
