Graf Top Tank Seal | 322038

Introduction

When setting up a rainwater harvesting system, it’s easy to focus on the tank and forget about the small but critical components that keep it running properly. One of those essentials is the Graf Top Tank Seal (Part #322038)—a purpose-built sealing solution designed for Graf’s Top Tank series. This compact component does more than just “hold things together”—it ensures water stays clean, connections stay tight, and systems stay leak-free over time.

Whether you’re collecting rainwater for home irrigation or managing a commercial water-saving setup, the reliability of this seal can make a major difference in long-term performance and water safety.

What Is the Graf Top Tank Seal?

The Graf Top Tank Seal is a specially designed gasket or sealing ring that fits precisely into Graf Top Tanks, which are typically used in aboveground rainwater harvesting systems. These tanks are popular for their durability, UV resistance, and modular build—but the integrity of their performance relies on the tight sealing of lids, risers, and other connecting components.

This seal is the part that makes sure water doesn't escape, dust doesn't get in, and everything stays securely fastened. It’s a simple, often-overlooked product that actually plays a central role in the health and efficiency of your rainwater system.

Common Problems the Seal Solves

1. Leaks That Go Unnoticed
Leaks in above-ground systems can be subtle. Water can escape slowly, especially at the seams. The Top Tank Seal stops those losses cold.

2. Debris Entering the Tank
Leaves, insects, dust, and even rodents can find their way into unsealed tanks, especially those with risers or removable domes. This seal makes it nearly impossible for outside contaminants to enter.

3. Short Seal Lifespan
Generic seals wear down quickly when exposed to the sun, especially in above-ground tanks. Graf’s proprietary material offers long-lasting performance in all seasons.

Installation Steps

1. Clean the Surface: Wipe down the tank opening or dome flange to remove dirt or sediment.
2. Align the Seal: Place the seal over the designated groove or lip.
3. Press It In: Apply even pressure to press the seal firmly into place. It should sit snugly without movement.
4. Secure Lid or Riser: Once the seal is seated, install the dome, lid, or riser as usual. Check for tight closure.

Tip: Do not apply petroleum-based lubricants or solvents to the seal.