Search  for anything...
Rectorseal

Rectorseal 8-Way 68712 Hot Water Systems Cure and Cleaner, Light Weight, HVAC, 1 Quart

  • Based on 301 reviews
Condition: New
Checking for the best price...
$25.89 Why this price?

Buy Now, Pay Later

As low as $6 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Aug 25
Order within 5 hours and 53 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: 1 Quart


Features

  • APPLICATION: 8-Way is a full steam and hot water system cure; sludge cleaner, rust remover, stops boiler corrosion, stops steam line corrosion, prevents oxygen pitting, blocks lime scale, prevents surging and foaming, and controls pH
  • EASY APPLICATION: Easy to use, complete boiler treatment; great for protective maintenance and saves time
  • SAFE TO USE: Boiler treatment is safe to use and contains no petroleum distillates; non-chromate and biodegradable; will not damage seals or gaskets
  • SPECIFICATIONS: 8-Way can be used for cleaning very dirty steam boilers and boilers with excessive scale, rust and muck; it can be used to maintain clean, rust free water on new or existing systems; boiler treatment also features sure-cure color indication
  • FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets

Description

8-Way is a full steam and hot water system cure. Sludge cleaner, rust remover, stops boiler corrosion, stops steam line corrosion, prevents oxygen pitting, blocks lime scale, prevents surging and foaming, and controls pH. Easy to use, complete boiler treatment. Great for protective maintenance and saves time. Boiler treatment is safe to use and contains no petroleum distillates. Non-chromate and biodegradable. Will not damage seals or gaskets. 8-Way can be used for cleaning very dirty steam boilers and boilers with excessive scale, rust and muck. It can be used to maintain clean, rust free water on new or existing systems. Boiler treatment also features sure-cure color indication. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets. From the Manufacturer 8-Way is a complete boiler water treatment (no chromate, biodegradable) for both steam and hot water systems. 1. Removes sludge. 2. Removes rust scale. 3. Inhibits boiler corrosion. 4. Inhibits steam line corrosion. 5. Prevents oxygen pitting. 6. Inhibits lime scale. 7. Prevents surging and foaming. 8. Controls pH with a color indicator. Quart

Brand: Rectorseal


Material Feature: Biodegradable


Item Volume: 1 Quarts


Unit Count: 1.0 Count


Number of Items: 1


Item Volume: 1 Quarts


Unit Count: 1.0 Count


Number of Items: 1


Item Weight: 2 Pounds


Size: 1 Count (Pack of 1)


Material Features: Biodegradable


Brand Name: Rectorseal


Global Trade Identification Number: 08


Manufacturer: Rectorseal


UPC: 687598130908


Included Components: 8-Way


Item Type Name: 8-Way


Model Number: 68712


Part Number: 68712


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 25

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great product, great price, quick shipping, well known hvac product manufacturer
Style: 1 Quart
Fantastic product. Easy to work with and fixed an annoying issue on my boiler where my boiler would make loud engine idling sound in my pipes. Turn water fill valve off and drain boiler down to o psi. Be sure to mark where your water pressure was on gauge, mine was 12psi and make sure boiler is cool and power is off . Close drain that you bled boiler pressure off with and remove auto vent and pour the whole bottle in. Use pipe dope and put auto vent back on. Open valve to water feed and make sure it’s gets up to your psi setting on gauge and turn power on to boiler. Check that your radiators are hot and bleed air out of any that are not heating up and your set. Immediately made my boiler quiet when running and love that the ph balancer will protect my boiler in the long term. ... show more
Reviewed in the United States on January 4, 2026 by Logan's girl
    • Amazing Product - Completely Cured Kettling Issue
Style: 1 Quart
Our house has a hot water baseboard heating system. The Weil-McLain boiler is almost 30 years old, but still functioning fine except for a nasty case of kettling that started developing a couple of years ago. It would make very noticeable popping/banging noise that echoed through the pipes of the heating system, especially those closest to the boiler in the heating circuit. Although the system was heating OK, I hated that kettling noise so much I got a quote for replacing the boiler with a new one, at close to $8000. Being a thrifty sort, I did some research on the topic and after reading all the positive reviews for this Rectorseal product, I decided it to try it. The quart bottle of Rectorseal 8-way treatment is claimed to treat systems up to 25 gallons. I did some quick calculations and found that my heating system was close to that volume. To install the product, I turned off the boiler, closed the valves to isolate the boiler from the rest of the system, closed the automatic water feed valve, relieved the pressure in the boiler, and drained about a quart of water from it to make room for the treatment. I removed the hy-vent unit on the top of the boiler, poured in the full quart, reinstalled the hy-vent, and then let it sit for about 8 hours. I don't know if that was necessary, or what the optimum amount of time would be, I just thought it would be a good idea to let the full quart sit in there for a while before opening the valves and diluting it with the water in the rest of the system. After 8 hours, I opened all the valves that I had closed previously, turned on the boiler, and bled the air from the system. I was very happy to find that the kettling issue was completely gone! As a precaution, I drained some water from the spigot at the bottom of the boiler in case there was any sludge that needed to be flushed out, but none came out. According to the instructions, the 8-way treatment can be left in the system to prevent future corrosion and buildup, so that's what I did. It's been a few weeks since I did this procedure and there has been no kettling at all. I am very very pleased with this product! ... show more
Reviewed in the United States on January 3, 2022 by MacMike
    • Best Bang for your Buck!!
Style: 1 Quart
Review Image by Barry
I used this to clean a severely neglected steam boiler. Followed the directions and it worked amazingly well. No foaming like a few others have mentioned. Very cost effective too...my boiler only holds 4 gallons so I'll get 4 full treatments from 1 quart...at approx 1 oz per gallon.
Reviewed in the United States on November 29, 2025 by Barry
    • Cleans good makes alot of foam
Style: 1 Gal.
Still gets 4 stars just for how well it works, but even with a minimal dose my boiler foamed up like crazy and 8 had to flush it all out for fresh water.
Reviewed in the United States on December 11, 2024 by Joe irwin
    • Good size and price
Style: 1 Gal.
Plenty big enough for my boiler heating system . Time will tell for quality
Reviewed in the United States on May 25, 2026 by alan gibb
    • Steam boiler heats up super fast and cleaned out all the rust!
Style: 1 Gal.
Review Image by Steve
It works awesome! My boiler heats up very fast now, radiators are stupid hot! Sealed up a few small pinhole leaks and it cleaned out all the rust. Can’t believe I wasn’t treating the boiler water before. Make sure you follow the instructions on the back for the flush before you add it to your water for the season. ... show more
Reviewed in the United States on January 19, 2025 by Steve
    • Really cleans out rust in steam boiler
Style: 1 Gal.
I paid $400 for plumber to flush and clean my steam boiler. After seeing what he did and thought it was such a simple maintenance job which i can do it myself. So i researched and came across this product and decided to give it a try my self last fall before winter kicks in. A trick I learnt from the plumber, there's a outlet hose connected the return pipe that carries condensed water back to the steam boiler. All he did was to raise the hose high and pour this liquid slowly into the hose, the liquid will flow back to the boiler tank. I follow this method twice in last winter to flush out rust and now my boiler is now cleaned. I can see that the clear water in the sight glass. ... show more
Reviewed in the United States on June 5, 2019 by Amazon Customer
    • amazing product, was a delay in shipping but merchant ...
Style: 1 Quart
amazing product, was a delay in shipping but merchant kept me up to date on delivery, finally arrived and I used it on my boiler and wow! what a difference, I went from knocking and banging noises on the pipes every time the boiler would turn on to heat the house, to no noise! I was shocked! , I dont know how the product works, I just works and it made me a beleiver. I just ordered another bottle and will be getting the gallon bottle as well which may be more cost effective to run this before every season to flush out the system as instructed, then add a second quart and leave it in there. before this product i would have to weekly empty out 1 to 2 buckets of water to keep the rust out of the system, now with this rust inhibitor product in addition to the other things it does, I no longer have to do that, it has saved me both time and money. very very happy customer and defintely recommend to anyone to make their boiler run smoothly, also, depending on your boiler size, you may need more than one quart per application, for mine, only 1 quart was needed since 1 quart I believe treats up to 30 gallons or so. I'm spreading the word to all my neighbors who's boiler is similar to mine so they can also benefit. ... show more
Reviewed in the United States on March 27, 2018 by VERY HAPPY!

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...