Among the modular plastic conveyor belts from Intralox are friction top, roller top and open hinge flat top belts. Friction top belts offer the grip of rubber but eliminate mistracking, misalignment and stretching, according to Intralox. Roller top belts provide low back pressure accumulation and require no lubrication. The company says its open hinge flat top belts allow higher water flow rates and unimpeded access to the belts' undersides and interior sprockets for cleanup.