how much hardner do i need for 4.35 gallons?

The resin and hardener come as a 5 to 1 ratio. The resisnt exactly a gallon, the hardener in I think a 25 oz can goes with a “gallon” of resin so you would need to get five of these 25 oz cans of hardener and you’ll have 2/3 of a can of hardener left when you’ve used up your 4.35 gallons of resin.

I have used Envirotex Lite to coat tiles and it is crystal clear but SO long to cure. Question is if this is crystal clear? And how long to cure?

You have to use 207 hardner and 207 resin. Go to West system site and read about clear finish.

Do these containers come full ? appeared to have channellock marks on lid channel and there was hardener on inner lid. Missing 2 inches of product.

It doesn't matter. It was obviously opened by someone. Just return it and get another one or a refund.

My set of resin and hardener came today, but the hardener is brownish/redish in color when I pump it out. Is that correct or should I return it?

My hardener was slightly brownish when mixing with the resin, but after mixing it would clear up, and it would harden clear as well. If it is very pronounced, you may have a problem, but if it is just a tint that goes away when you mix, that seems to be normal. You may want to do a test on some scrap material to confirm.

West System 205b Fast Hardener 0 86 Quart

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

⚡ Cure fast, build strong, stay ahead.

PRECISION DOSING - Compatible with #301 mini pumps for exact mixing and minimal waste—buy just what you need.
RAPID CURE POWER - Fast hardening formula cures in just 10-15 minutes at 70°F, perfect for urgent projects.
COLD WEATHER CHAMPION - Engineered to perform reliably even in lower temperatures, so your projects never stall.
WEATHER READY DURABILITY - Water-resistant finish ideal for moisture-exposed environments and powersports gear.
UNMATCHED STRUCTURAL STRENGTH - Mixes with #105 resin to create a rigid, high-strength bond that stands the test of time.

WEST SYSTEM 205B Fast Hardener is a high-viscosity epoxy hardener designed for rapid curing when mixed 5:1 with #105 resin. It delivers a rigid, moisture-resistant bond with a pot life of 10-15 minutes at 70°F and full cure in 24 hours. Ideal for professionals and hobbyists needing quick turnaround, especially in cold or moisture-prone conditions.

Specifications

ASIN	B0002NY6SW
Best Sellers Rank	414,297 in DIY & Tools ( See Top 100 in DIY & Tools ) 174 in Metal Filled Epoxies
Brand	West System
Colour	clear
Compatible Material	Glass, Metal, Plastic, Resin, Wood
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 217 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00811343010577
Item Form	Liquid
Item Package Quantity	1
Item Volume	0.86 Quarts
Item Weight	2.2 Pounds
Item form	Liquid
Manufacturer	WEST SYSTEM
Manufacturer Part Number	205B
Material	Epoxy Resin
Model Number	205-B
Number of Pieces	1
Other Special Features of the Product	Fast Drying
Special feature	Fast Drying
Specific Uses For Product	Powersports Equipment, Moisture-Exposed Environments
Specific uses for product	Powersports Equipment, Moisture-Exposed Environments
UPC	811343010577 780333707172 799916783816
Unit Count	813.8635 millilitre
Viscosity Level	High
Water Resistance Level	Water Resistant

Reviews

J**.

West System Products are Great!

West System Products are wonderful for both hobbyists and professionals. Convent package sizes make it easy to buy the right amount without waste. 205-B is great for cold weather or fast cure needs.

24.11.2025

J**.

Delivery ahead of schedule

Timely delivery of product is always desirable. West systems offers among the best performance for an adhesive and structural epoxy. Not to be confused with a slow cure or high depth of pour product.

6.06.2024

D**T

Worth the expense!

Outstanding Application every time!

1.03.2025

G**.

Fast delivery, good price

Fast delivery

30.03.2026

K**N

Know quality,know WestSystem. No quality,no WestSystem.

Can't go wrong with West System. This is the fast hardener, compared to the Slow. Duh. The other pic is of their 404 high-density filler. I use it to make the epoxy thicker. I have dyed it also to make it match the color of wood. Works great! Thanks West System, your a good guy.

1.04.2021

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