---
product_id: 646128843
title: "O-Ring for 550 Model Reactor"
brand: "two little fishies"
price: "HK$217"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/646128843-o-ring-for-550-model-reactor
store_origin: HK
region: Hong Kong
---

# 15.88 x 10.16 x 0.64 cm Rubber Material 0.28g Weight O-Ring for 550 Model Reactor

**Brand:** two little fishies
**Price:** HK$217
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade Your Reactor Game!

## Quick Answers

- **What is this?** O-Ring for 550 Model Reactor by two little fishies
- **How much does it cost?** HK$217 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/646128843-o-ring-for-550-model-reactor)

## Best For

- two little fishies enthusiasts

## Why This Product

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

## Key Features

- • **📦 Compact Size:** Lightweight and easy to handle, weighing just 0.28g.
- • **🌍 Trusted Brand:** From Two Little Fishies, a name synonymous with reliability.
- • **🔍 Precision Fit:** Engineered for a snug fit, ensuring no leaks or issues.
- • **🛠️ Durable Design:** Crafted from high-quality rubber for long-lasting use.
- • **🔄 Seamless Replacement:** Perfectly fits Reactor 550 for optimal performance.

## Overview

The Two Little Fishies O-Ring for the 550 Model Reactor is a high-quality rubber replacement designed specifically for the Reactor 550. Weighing only 0.28g and measuring 15.88 x 10.16 x 0.64 cm, this durable O-ring ensures a perfect fit and optimal performance, making it an essential component for maintaining your aquarium's filtration system.

## Description

Two Little Fishies O-Ring for 550 Model Reactor

## Features

- Description: replacement O-ring for the PhosBan Reactor 150
- Two Little Fishies O-Ring for 550 Model Reactor
- To be used with a Reactor 550 only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Rubber |
| Brand | Two Little Fishies |
| Colour | Black |
| UPC | 748172549056 |
| Manufacturer | Two Little Fishies |
| Global Trade Identification Number | 00748172549056 |
| Model number | PBR5-OR |
| Number of Memory Sticks | 1 |
| Item Weight | 0.28 g |
| Product Dimensions | 15.88 x 10.16 x 0.64 cm; 0.28 g |
| Item model number | PBR5-OR |
| Item Height | 0.25 Inches |
| Item Width | 4 Inches |
| Are batteries included? | No |

## Product Details

- **Material:** Rubber
- **Brand:** Two Little Fishies
- **Colour:** Black
- **UPC:** 748172549056
- **Manufacturer:** Two Little Fishies

## Images

![O-Ring for 550 Model Reactor - Image 1](https://m.media-amazon.com/images/I/51xU8KVJ7yL.jpg)

## Frequently Bought Together

- Two Little Fishies O-Ring for 550 Model Reactor
- Two Little Fishies PhosBan Reactor 550, Lid, Part B [Misc.]

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**Shop now:** [https://www.desertcart.hk/products/646128843-o-ring-for-550-model-reactor](https://www.desertcart.hk/products/646128843-o-ring-for-550-model-reactor)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-08-16*