PC40 & PC40-20 COMPATIBLE: These premium rubber o-rings are replacement o-rings for Pelican PC40 and PC40-20 whole-house water filter systems. Each o-ring in this 4-pack ensures a watertight seal for your water filter housing, preventing costly leaks and maintaining optimal performance. The durable rubber gasket ring construction matches OEM specifications while offering better value than original parts for reliable protection of your home water filter investment. ROUTINE MAINTENANCE: Replace your water filter o-rings with every filter change as recommended to maintain your whole house water filtration system efficiency. This o-ring kit contains four high-quality rubber o-rings that create seals in your 10-inch water filter housing or 20-inch systems. Regular replacement prevents leaks, protects against water damage, and ensures your water filter system maintains proper pressure for peak house water filter performance. DURABLE RUBBER BUILD: Each o-ring set features industrial-grade rubber materials engineered to withstand constant water pressure and temperature variations in residential water filtration systems. These o-rings and rubber components resist degradation from chlorine and minerals in household water. The precise sizing matches specifications, making installation straightforward for maintaining your whole-house water filter or home water filter system. VALUE 4-PACK: Stock up with this economical 4-pack of replacement o-rings to ensure you always have essential water filter housing maintenance supplies ready. Since experts recommend replacing o-rings during each filter change (every 3-6 months), this multipack provides up to two years of maintenance. Smart homeowners choose bulk ring replacement parts to save money versus single units when maintaining their whole house filtration system properties. EASY INSTALLATION: These versatile o-rings work seamlessly with PC40 and PC40-20 water filter canister systems for hassle-free maintenance. The precision-molded rubber o-ring maintains flexibility in temperature extremes while creating reliable seals in standard filter housings. Professional contractors and homeowners trust IPW Industries components for maintaining house water filters, ensuring leak-free operation during complete system maintenance routines. Keep your whole house water filtration system operating at peak performance with IPW Industries' premium replacement o-rings, specifically engineered for Pelican PC40 and PC40-20 water filter housings. This essential 4-pack kit provides the rubber o rings you need for routine maintenance, as experts recommend replacing these critical seals with every filter change to prevent unexpected leaks and maintain optimal water pressure. Each rubber gasket ring in this o-ring kit features industrial-grade materials designed to withstand constant water pressure, temperature variations, and exposure to chlorine and minerals found in household water supplies. The durable rubber construction creates watertight seals between your filter housing and cap, protecting your home from potential water damage while ensuring your water filter system operates efficiently. With filters typically requiring changes every 3-6 months, this value 4-pack provides up to two years of maintenance supplies, eliminating emergency trips to the store and keeping spare o-rings readily available. Professional plumbers and DIY homeowners alike trust these precision-molded components that match OEM specifications while offering better value than original equipment parts, making this the smart choice for maintaining your home water filter investment and ensuring clean, filtered water for your family year-round.