Yonsha produces good black, conductive high-temperature silicone suction cups. Yonsha's vacuum cups can handle electronic components, glass lenses and certain medical applications and are widely used in the solar industry. Yonsha has 8 kinds of vacuum cups: V9009 3/32” (2.38mm), V9013 1/8” (3.18mm), V9018 3/16” (4.76mm), V9025 1/4” (6.35mm), V9038 3/8” (9.53mm), V9050 1/2” (12.70mm), V9062 5/8” (15.88mm), and V9075 3/4” (19.05mm). All these suction cups are on stock. Prices are extremely low.