Ensure a leak-free and reliable seal in your under-sink or point-of-use water filtration system with the Culligan OR-233 O-Ring. Specifically engineered for compatibility with Culligan US-600A and SY Series filter housings, this durable rubber gasket is a critical component for maintaining system integrity and preventing water damage.

Key Features:

• Precision Fit for Multiple Models
  Compatible with a wide range of Culligan systems, including:

  • US-600A, SY-2000, SY-2100, SY-2300, SY-2300S, SY-2500, SY-2650
  • Also fits RO-3000, RO-3500, and select models from Pentek, American Plumber, Watts, and Ace Hardware

• Leak Prevention & System Protection
  Forms a tight seal between the filter housing canister and cap, preventing leaks and protecting cabinets, countertops, and plumbing from water damage.

• Durable Rubber Construction
  Made from NSF 61 certified Buna-N rubber, the OR-233 offers excellent resistance to compression, temperature fluctuations, and chemical exposure—ensuring long-lasting performance.

• Recommended Maintenance
  Replace the O-ring every third filter change or immediately if signs of wear, cracking, or flattening appear. Regular replacement ensures optimal sealing and system efficiency.

• Universal 3" Diameter Fit
  Designed to fit 3" diameter filter housings, including Slim Line and standard under-sink systems. Also compatible with many non-Culligan brands using similar housing dimensions.

• Easy Installation
  Tool-free replacement—simply remove the old O-ring, clean the groove, apply food-grade silicone lubricant (optional), and insert the new O-ring for a secure fit.

Specifications:

• Model: OR-233
• Material: Buna-N Rubber
• Diameter: 3 inches
• Weight: Approx. 0.02 lbs
• Certifications: NSF/ANSI Standard 61
• UPC: 033663005242
• Package Options: Available in single, 3-pack, or bulk sets