IPW Industries Inc has 17 years of expertise and are members of the Water Quality Association. We stand by our products and service. IPW Industries Inc is known for its quality, superiority, and effectiveness. Our customers mean everything to us. We never compromise on the quality of our products, and each product is individually inspected by us. *Note: This o-ring is compatible only with PURA systems manufacured in May 2009 or later. The date code is located on the back of the control module. Control modules are replaced every 3 to 5 years, so it is recommended that you consult the owner's manual that was included with your system to ensure you order the correct o-ring. If your system was manufactured before May 2009 you should order part number 151120. Additional Details ------------------------------ Product description: IPW Industries Inc has 17 years of expertise and are members of the Water Quality Association. We stand by our products and service. IPW Industries Inc is known for its quality, superiority, and effectiveness. Our customers mean everything to us. We never compromise on the quality of our products, and each product is individually inspected by us. *Note: This o-ring is compatible only with PURA systems manufacured in May 2009 or later. The date code is located on the back of the control module. Control modules are replaced every 3 to 5 years, so it is recommended that you consult the owner's manual that was included with your system to ensure you order the correct o-ring. If your system was manufactured before May 2009 you should order part number 151120.