RETAINER#
TYPE CONSTRUCTION: INTERNAL REINFORCEMENT OF STEEL, WITH SPRING AND ANTI-DUST LIP; #
MATERIAL: NITRILICA RUBBER; HARDNESS: 85 SHORE A; #
PRESSURE WORK: 0.50 TO 4.07 KGF / CM2; #
WORKING TEMPERATURE: -11 TO 110 DEGREES CENTIGRATED; #
AXLE DIAMETER: 170.00 MM; D1: 170.00 MM; D2: 200.00 MM; H: 16.00 MM;

The impact of the 4D printer on the international market
The most obvious advantage of 4D printing is that objects larger than printers can be printed as just one part. Because they can shrink and unfold, items that are too large to fit in a printer can be compressed and then become full size.