APEC Water Systems Replacement O-Ring Set for ROES-50 3.5-inch OD Housings – 3 Pack (O-Ring-Set-B)

Premium O-Ring Replacement for ROES-50 3.5-inch Housings

Maintaining a secure seal in your reverse osmosis system is essential for consistent filtration and reliable performance. This durable O-Ring set from APEC Water is designed to fit ROES-50 assemblies and many standard 10-inch housings. Each ring is lightweight and easy to handle, making routine maintenance feel straightforward rather than daunting.

What sets these O-Rings apart is their thoughtful design and material quality. Constructed from NSF-compliant materials, they are suitable for drinking water contact and help support dependable operation. The 3.5-inch outer diameter provides a precise fit for recognized housings, helping you avoid leaks during daily use. For best results, apply a small amount of food-grade lubricant—such as Dow Corning 111 or a comparable product—before installation to help the ring settle and form a clean seal.

What you get

• Set of 3 O-Rings for standard filter housings used with APEC RO systems
• Diameter 3.5 inch OD for a precise fit
• Lightweight design that’s easy to install and remove
• NSF-compliant materials for safe, reliable use

Ideal use cases

These O-Rings are ideal for routine replacement during filter changes, seasonal maintenance, or when upgrading aging seals. The lightweight rings slide into place with minimal effort, helping you minimize downtime and maintain consistent water quality in homes, apartments, or small offices.

• Compatible with APEC Essence and Ultimate RO systems
• Also suitable for other 10-inch standard filter housings
• Simple installation and reliable leak seal when paired with appropriate lubricant
• Replacement recommended every 1-2 years for ongoing performance

Note: Please verify compatibility using the second gallery image and follow the manufacturer’s instructions during replacement. This O-Ring set is designed to support routine maintenance and easy maintenance tasks.