Profile: Siddhartha Distributors is a supplier & retailer of a wide array of industrial couplings. Our product series encompasses of flex couplings, jaw couplings, and grid couplings. Our products feature tough construction, durability, corrosion resistance, lightweight and easy installation. Concave jaw coupling are essentially general purpose couplings with a flexible spider which can accommodate higher degree of misalignment. The design of the UPC coupling has been optimized so that power capacities are balanced to the appropriate shaft diameters.