O-ring d21x1 GPU/I-20

Spare part for Universal parallel gripper GPU-20/GPUI-20.

This is a spare part for Universal parallel gripper GPU-20 (Stroke = 12 mm), Universal parallel gripper GPUI-20 (Stroke = 12 mm), Parallel grippers double-acting GPDL-3 (Stroke = 12mm) [10 pieces], Parallel grippers double-acting GPDI-3 (Stroke = 12mm) [10 pieces], Parallel grippers double-acting GPD-3 (Stroke = 12mm)