Translate the given Spanish text to English

A non-rotating cement wiper plug (10b) has an insert (50), with inner (60) and outer (80) telescoping sleeves, within a resilient outer body (20).
Un obturador deslizante de cemento, no giratorio, tiene un inserto con manguitos interior y exterior enchufados de manera telescopica, dentro de un cuerpo exterior flexible o resiliente.