4" Corrosion Resistant Retaining Rings for Water & Wastewater Corrosion Resistant retaining rings for 4" applications Typical Lifespan: 10,000-50,000 hours This Part in Other Industries Aerospace Automotive Manufacturing Chemical Processing Food & Beverage Marine Mining Oil & Gas Pharmaceutical Power Generation Pulp & Paper Steel & Metals Related Resources View All Retaining Rings More Retaining Rings for Water & Wastewater