Full definition
A piece cut or die-stamped from vulcanized rubber sheet to specific dimensions and shape, serving as a shock absorber, vibration isolator, anti-slip pad, protective cushion, spacer, or gasket in industrial and commercial applications. Materials selected per service conditions: NR (highest resilience and dynamic performance — for shock mounts), SBR (economical general purpose), neoprene CR (oil + weather resistance), NBR (oil and fuel environments), EPDM (outdoor weather and ozone), and PU (maximum abrasion resistance and load-bearing). Fabrication: die-cutting (steel rule die or clicker press — most economical for flat parts), waterjet cutting (no tooling, ideal for prototypes and small quantities), laser cutting (precision, some materials only), and CNC knife cutting. Thicknesses: 1.5-50 mm. Hardness: typically 40-80 Shore A. Common applications: machinery mounting pads (vibration isolation), bridge bearing pads (AASHTO laminated NR), bumpers and dock guards, anti-vibration equipment feet, washer and dryer pads, furniture floor protectors, and custom gaskets. Per ASTM D2000 for material. Engineering: for vibration isolation, natural frequency fn = (1/2π)√(k/m), where k depends on pad stiffness, area, and thickness.