---
product_id: 14489722
title: "Stainless Steel Soldering Flux – 1 Pint Bottle | Industrial-Grade Acid Flux for Steel, Brass, Nickel & Hard-to-Solder Metals | Fast Acting, Strong Bond, Made in USA"
brand: "rubyfluid"
price: "₩65748"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/14489722-stainless-steel-soldering-flux-1-pint-bottle-industrial-grade-acid
store_origin: KR
region: South Korea
---

# Fast-acting, strong bond Industrial-grade acid formula Made in USA since 1903 Stainless Steel Soldering Flux – 1 Pint Bottle | Industrial-Grade Acid Flux for Steel, Brass, Nickel & Hard-to-Solder Metals | Fast Acting, Strong Bond, Made in USA

**Brand:** rubyfluid
**Price:** ₩65748
**Availability:** ✅ In Stock

## Summary

> 🔥 Master the art of metal bonding with Rubyfluid – where strength meets precision 🇺🇸

## Quick Answers

- **What is this?** Stainless Steel Soldering Flux – 1 Pint Bottle | Industrial-Grade Acid Flux for Steel, Brass, Nickel & Hard-to-Solder Metals | Fast Acting, Strong Bond, Made in USA by rubyfluid
- **How much does it cost?** ₩65748 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/14489722-stainless-steel-soldering-flux-1-pint-bottle-industrial-grade-acid)

## Best For

- rubyfluid enthusiasts

## Why This Product

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

## Key Features

- • **Generations of Trust:** Proudly made in the USA since 1903, delivering consistent, professional results every time.
- • **Shop-Ready 1 Pint Bottle:** Durable, resealable container designed for heavy-duty projects and extended use on the job.
- • **Engineered for Tough Metals:** Specially formulated for stainless steel, nickel, brass & other hard-to-solder surfaces where ordinary fluxes fail.
- • **Industrial-Grade Reliability:** Powerful acid-based flux trusted by pros in HVAC, metalworking, and fabrication shops.
- • **Rapid Wetting & Uniform Flow:** Ensures high-strength, corrosion-resistant solder joints that last in demanding environments.

## Overview

Rubyfluid Stainless Steel Soldering Flux is an industrial-strength acid flux designed specifically for hard-to-solder metals like stainless steel, nickel, and brass. Trusted by professionals since 1903 and made in the USA, it promotes rapid wetting and strong, corrosion-resistant solder joints. Packaged in a durable 1-pint resealable bottle, it’s ideal for HVAC, metalworking, and fabrication applications requiring reliable, high-performance bonding.

## Description

Rubyfluid Stainless Steel Soldering Flux – Engineered for Hard-to-Bond Metals Tackle the toughest soldering jobs with Rubyfluid Stainless Steel Soldering Flux, purpose-built for stainless steel, nickel, and other challenging metals. This industrial-strength acid flux is trusted by professionals in HVAC, metalworking, manufacturing, and precision fabrication for its ability to break through oxidation and promote strong, durable solder joints—even on the most stubborn surfaces. Unlike general-purpose fluxes, Rubyfluid’s stainless steel formula is optimized for high-temperature performance, rapid wetting, and superior bonding strength. Use it on fittings, sheet metal, appliances, or assemblies where clean, lasting joins are critical. Proudly made in the USA since 1903, Rubyfluid continues to set the standard in specialty soldering fluxes. Available in a convenient 1-pint size for efficient shop use. Contains Zinc Chloride and Hydrochloric Acid, not for electronics use.

## Features

- Designed for Stainless Steel & Tough Metals – Specially formulated for stainless steel, nickel, brass, and other hard-to-solder surfaces where general fluxes fail.
- Strong, Reliable Solder Joints – Promotes rapid wetting and uniform flow to ensure high-strength, corrosion-resistant connections in demanding environments.
- Industrial-Grade Acid Flux – Powerful acid-based formula for professional applications; ideal for fabrication, repair, HVAC, and metalworking shops.
- Made in the USA Since 1903 – Trusted for over a century, Rubyfluid’s fluxes deliver consistent results for tradespeople and manufacturers alike.
- 1 Pint Value Bottle – Durable, resealable container for extended use; perfect size for shop floors, toolkits, and heavy-duty projects.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Superior Flux |
| Part Number | RUBYFLUIDSS |
| Item Weight | 1.32 pounds |
| Product Dimensions | 7.8 x 2.1 x 1.5 inches |
| Item model number | FLSRUBYFLUIDSS |
| Material | stainless steel |
| Item Package Quantity | 1 |
| Usage | Jewelry |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Stainless Steel Soldering Flux – 1 Pint Bottle | Industrial-Grade Acid Flux for Steel, Brass, Nickel & Hard-to-Solder Metals | Fast Acting, Strong Bond, Made in USA - Image 1](https://m.media-amazon.com/images/I/51aUbz145ML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works!
*by A***E on September 22, 2025*

Only fluid that actually helps

### ⭐⭐⭐⭐⭐ Best stainless soldering past
*by A***R on September 13, 2025*

I'm using regular soldering past for stainless. But dose not work good. I try using this product, perfect work.

### ⭐⭐⭐⭐⭐ Good for stainless steel and copper
*by R***T on May 23, 2025*

Of you are trying to solder and need good flux, this is it. If you are trying to solder copper to stainless steel, then don't even try it without this flux

## Frequently Bought Together

- Rubyfluid Stainless Steel Soldering Flux – 1 Pint Bottle | Industrial-Grade Acid Flux for Steel, Brass, Nickel & Hard-to-Solder Metals | Fast Acting, Strong Bond, Made in USA
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- Special Flux in Solder Wire, for Soldering Stainless Steel, Iron Sheets, etc., Multi-Functional Solder Wire (100g)

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**Shop now:** [https://www.desertcart.kr/products/14489722-stainless-steel-soldering-flux-1-pint-bottle-industrial-grade-acid](https://www.desertcart.kr/products/14489722-stainless-steel-soldering-flux-1-pint-bottle-industrial-grade-acid)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-30*