---
product_id: 11308384
title: "Fleck 2510 & 9100 Tank O-Ring (18303) -Repair Leaks on Water Softeners & Filter Systems, Black"
brand: "fleck"
price: "¥3880"
currency: JPY
in_stock: true
reviews_count: 3
url: https://www.desertcart.jp/products/11308384-fleck-2510-and-9100-tank-o-ring-18303-repair-leaks
store_origin: JP
region: Japan
---

# Genuine Fleck Leak prevention Replacement part Fleck 2510 & 9100 Tank O-Ring (18303) -Repair Leaks on Water Softeners & Filter Systems, Black

**Brand:** fleck
**Price:** ¥3880
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the Deal: Keep Your Water Systems Leak-Free!

## Quick Answers

- **What is this?** Fleck 2510 & 9100 Tank O-Ring (18303) -Repair Leaks on Water Softeners & Filter Systems, Black by fleck
- **How much does it cost?** ¥3880 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/11308384-fleck-2510-and-9100-tank-o-ring-18303-repair-leaks)

## Best For

- fleck enthusiasts

## Why This Product

- Trusted fleck brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **📏 Perfect Fit:** Designed specifically for Fleck 2510 & 9100 models for a snug fit.
- • **💪 Durable Design:** Crafted to withstand wear and tear, ensuring long-lasting performance.
- • **🔒 Leak-Free Assurance:** Say goodbye to leaks with this reliable seal for your water systems.
- • **🔄 Seamless Replacement:** Easily replace your worn-out O-ring to restore functionality.
- • **🛠️ Hassle-Free Installation:** No special tools required—get back to enjoying clean water in no time!

## Overview

The Fleck 2510 & 9100 Tank O-Ring (18303) is a genuine replacement part designed to repair leaks in water softeners and filter systems. This durable black O-ring is essential for maintaining the integrity of your water system, ensuring a perfect fit and hassle-free installation.

## Description

Fleck 2510 & 9100 Tank O-Ring (18303) -Repair Leaks on Water Softeners & Filter Systems, Black

## Features

- Replacement tank O-ring for Fleck 2510 & 9100 softener & filter valves
- Replacement part for leaks that form where the control valve seals against the tank
- The O-ring (Fleck part# 18303) can become brittle, nicked or cut and allow leaks
- Genuine Fleck part

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Fleck |
| Part Number | 18303 |
| Item Weight | 0.317 ounces |
| Product Dimensions | 3 x 3 x 1 inches |
| Item model number | 18303 |
| Is Discontinued By Manufacturer | No |
| Color | Black |
| Item Package Quantity | 1 |
| Included Components | o ring |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Fleck 2510 & 9100 Tank O-Ring (18303) -Repair Leaks on Water Softeners & Filter Systems, Black - Image 1](https://m.media-amazon.com/images/I/612Kd2sx6JL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Exact fit!
  

*by S***L on Reviewed in the United States on August 4, 2020*

Exact fit, just as described. Way better than driving to several plumbing stores trying to find a replacement.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect
  

*by J***F on Reviewed in the United States on January 26, 2019*

Exactly what I needed to reinstall my Fleck 2510sxt back on the tank. Had to order a slip ring as well, now everything is back up and running.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect fit perfect seal
  

*by F***R on Reviewed in the United States on March 19, 2022*

I used this to replace my original part between the Fleck valve and spun fiberglass tank.  Works well, no leaks.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/11308384-fleck-2510-and-9100-tank-o-ring-18303-repair-leaks](https://www.desertcart.jp/products/11308384-fleck-2510-and-9100-tank-o-ring-18303-repair-leaks)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*