When do you use oval or rectangular suction cups?

faq_suctioncups_when_oval_or_rectangular_suction_cups

Oval and rectangular suction cups are suitable for longitudinal or cylindrical work-pieces occupying low space (e.g. rails, framings, tubes and bolts). They are also suitable for corrugated work-pieces and products having bars and webs.

They offer considerably greater suction force compared to round suction cups having the same width.