This OR40-50 rubber sealing ring is a high-quality replacement part, fully compatible with Viqua OR40-50, Simpure DB10 DB20, Aquios OR236, and other matching equipment interfaces. Crafted from durable EPDM rubber, it features excellent elasticity and compression resistance, creating a tight, reliable seal to prevent leaks and seepage. The standard size ensures a seamless fit for quick, direct installation without adjustments. Designed for long-term use, this o-ring resists aging, hardening, and cracking, maintaining consistent performance in common working conditions. It is available in 1-pack and 3-pack options to suit emergency repairs, backup stock, or bulk maintenance needs.