Overview Reviews Product Description Yamada Pump Part - O RING 84.4 MM X 3.1 MM PTFE - PN 643142 Product Videos Custom Field Product Reviews Write a Review Write a Review × Yamada Pumps Yamada Pump Part - O RING 84.4 MM X 3.1 MM PTFE - PN 643142 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *