Size20Suction cup materialNitrile rubber NBRMaterial hardness [Shore A]55 Shore AVacuum connectionG1/8"-FKE-SUF 20 NBR-55 G1/8-IGDesign Data Attribute Value Dmax(S) 22.80 mm Ds 20 mm dn 3.10 mm G1 G1/8"-F H 23.50 mm LG1 8 mm SW1 14 mm Z (Stroke) 2 mm