We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White paste in a 4 oz brush-cap jar

Harris

Harris Bridgit Lead Free Soldering Flux Paste 4 oz

SKU CH-1Z87-1SYEX

Water-soluble paste flux for lead-free plumbing solder on copper, brass, bronze, galvanised and steel, active to 600 °F, meets ANSI 61, ASTM B813 and NSF standards

  • Product typeWater Soluble Paste
  • Water-soluble paste cleans easily with water
  • Lead-free formula meets ANSI 61 and ASTM B813 standards
  • NSF certified for potable water plumbing applications
  • Reduces black carbon formation during soldering
  • Works up to 600 degrees F on copper, brass, bronze, steel and galvanized materials

Harris Bridgit Flux Paste

Harris Bridgit Lead Free Soldering Flux Paste is a water-soluble paste flux supplied in a 4 oz brush-cap jar. It is formulated for lead-free solder alloys and meets ANSI 61, ASTM B813 and NSF standards for potable-water plumbing applications. The flux activates up to 600 Degrees F and has a specific gravity of 1.169. It is intended for professional and DIY plumbing work on approved metals.

Upgrade from petroleum fluxes

This product replaces traditional petroleum-based fluxes that leave carbon residues and require harsh chemical cleaning. The water-soluble formula rinses clean with water, reducing black carbon formations on copper, brass, bronze, galvanized and steel fittings. The jump is worth it when codes require NSF or ANSI 61 compliance for drinking-water systems and when a lead-free, low-residue joint is specified.

For plumbers on potable systems

This flux suits plumbers and maintenance technicians joining lead-free solder on potable-water lines where NSF and ANSI 61 certification are mandatory. It is not for buyers who need a flux for electronics, stained glass or high-temperature brazing above 600 Degrees F. Users who prefer a rosin-based or no-clean flux for non-plumbing work should look at a different formulation.

How it compares

Measured against everything we stock in Soldering Irons & Stations, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 92% of the 802 comparable items (median $25.99).

Specifications

Product
Brand nameHarris
Product typeWater Soluble Paste

Questions about this item

What container type and capacity does the 4 oz Bridgit flux use?

The flux comes in a 4 oz brush-cap jar for direct application.

How is the water-soluble paste applied and what step is often missed?

Brush the paste onto the joint, heat to 600 °F maximum active temperature, then rinse thoroughly with water to remove residue.

When should the flux be replaced based on its physical properties?

Replace the jar if the specific gravity shifts from 1.169 or the paste dries out and no longer spreads evenly.

More in Soldering Irons & Stations

Similar items