The Taprite 440-17R (5-Piece Pack) is a commercial-grade bundle of heavy-duty replacement flat ring seals (permanent O-rings) engineered specifically for the CO2 inlet nipple fitting on Taprite primary regulators. These durable seals sit securely inside the brass stem that connects your regulator directly to your CO2 gas tank.

Product Specifications:

• Part Number: Taprite 440-17R-5PK / 440-17R
• Quantity: Pack of 5 Flat Ring Seals
• Dimensions: 3/32" Thickness | 7/16" Inner Diameter (ID) | 5/8" Outer Diameter (OD)
• Permanent Design: Built to remain inside the stem and be reused across multiple cylinder swaps, completely eliminating the need for temporary fiber or paper crush washers.

Easy Step-by-Step Replacement Instructions:

If you are experiencing a slow gas hiss or loss of pressure at your tank connection, follow these simple steps to install your new seal:

1. Remove the Retaining Plug: Insert a 5/32” Allen wrench into the end of your brass regulator stem and carefully unscrew the retaining plug.
2. Clear Out the Old Ring: Use a small picker, tweezers, or needle-nose pliers to remove the worn-out flat ring from its groove.
3. Seat the New Seal: Place the new 440-17R seal cleanly into the groove. (Pro-Tip: Apply a tiny dab of food-grade lubricant to maximize lifespan and performance.)
4. Reassemble: Thread the brass retaining plug back in until it is snug. Do not over-tighten.

?? Order Checklist & Checkout Reminder:

• Pick up a tube of Food-Grade Petrol-Gel Lubricant to prolong the life of your new O-rings.
• Inspect your CGA320 Tank Hex Nut or full Inlet Nipple Assembly to ensure your entire draft line is fresh and leak-free.