Sort and Filter
Epoxy Hardeners
Find curing agents for epoxy construction or repair at Silmid. A good epoxy hardener will enhance your work by giving you the right combination of work time, curing speed, and lasting performance. We have a large collection of epoxy hardeners from leading brands like Loctite, Araldite, ResinLab, and Aradur. Purchase small volumes of hardeners for occasional needs or get large pails and drums of hardener for ongoing industrial projects. Hardeners can be used for adhesives, casting, structural repairs, maintenance coatings, and many other applications.
Products - 66
Silmid P/N:
CRA140480G
In Stock - 7 Available
£103.09 excl VAT
Silmid P/N:
E3520B01KG
On Order - 2 available in 27 days
£151.81 excl VAT
Silmid P/N:
AR3298020K
No Stock - Standard lead time 47 business days
£821.08 excl VAT
Silmid P/N:
AR420B0020
No Stock - Standard lead time 61 business days
£4317.67 excl VAT
Silmid P/N:
VAR0000766
No Stock - Standard lead time 33 business days
From £70.00 excl VAT
Silmid P/N:
EPI3223USQ
No Stock - Standard lead time 26 business days
£101.05 excl VAT
Silmid P/N:
EPI3234USQ
No Stock - Standard lead time 61 business days
£114.77 excl VAT
Silmid P/N:
EPK61B0225
No Stock - Standard lead time 35 business days
£2477.00 excl VAT
Silmid P/N:
HD02420USQ
No Stock - Standard lead time 145 business days
£960.87 excl VAT
Silmid P/N:
HD34160USG
No Stock - Standard lead time 75 business days
£503.52 excl VAT
Silmid P/N:
HD34750USQ
No Stock - Standard lead time 54 business days
£301.49 excl VAT
Silmid P/N:
HD35610USG
No Stock - Standard lead time 19 business days
£459.26 excl VAT
Silmid P/N:
HUNLAC2500
No Stock - Standard lead time 33 business days
£37.71 excl VAT
Silmid P/N:
HV953U01KG
In Stock - 5 Available
£163.81 excl VAT
Silmid P/N:
VAR0001937
No Stock - Standard lead time 61 business days
From £44.72 excl VAT
Silmid P/N:
HY13000500
In Stock - 1 Available
£47.93 excl VAT
Silmid P/N:
VAR0001204
No Stock - Standard lead time 19 business days
From £71.13 excl VAT
Silmid P/N:
HY296725KG
No Stock - Standard lead time 61 business days
£1525.48 excl VAT
Silmid P/N:
HY4076020K
No Stock - Standard lead time 33 business days
£1611.94 excl VAT
Silmid P/N:
HY40761KG
On Order - 1 available in 10 days
4 available in 14 days
4 available in 14 days
£171.60 excl VAT
Silmid P/N:
HY505201KG
In Stock - 29 Available
£104.22 excl VAT
Silmid P/N:
HY505219KG
No Stock - Standard lead time 47 business days
£985.65 excl VAT
Silmid P/N:
HY51581K
No Stock - Standard lead time 26 business days
£49.60 excl VAT
Silmid P/N:
HY51600025
No Stock - Standard lead time 47 business days
£745.71 excl VAT
Silmid P/N:
HY906001KG
In Stock - 13 Available
£76.32 excl VAT
Silmid P/N:
VAR0000991
In Stock
From £54.71 excl VAT
Silmid P/N:
HY953F01KG
No Stock - Standard lead time 82 business days
£155.44 excl VAT
Silmid P/N:
P012641
In Stock
From £34.55 excl VAT
Silmid P/N:
HY956005KG
No Stock - Standard lead time 19 business days
£353.18 excl VAT
Silmid P/N:
HY9910001K
In Stock - 11 Available
£216.28 excl VAT
Silmid P/N:
VAR0001742
No Stock - Standard lead time 61 business days
From £96.45 excl VAT
Silmid P/N:
P1500389
No Stock - Standard lead time 61 business days
£2782.74 excl VAT
Silmid P/N:
VAR0001459
No Stock - Standard lead time 19 business days
From £40.30 excl VAT
Silmid P/N:
XD444801KG
On Order - 20 available in 101 days
£110.98 excl VAT
Silmid P/N:
HY906020KG
No Stock - Standard lead time 19 business days
£1357.06 excl VAT
Silmid P/N:
HD37190USQ
No Stock - Standard lead time 117 business days
£193.67 excl VAT
Silmid P/N:
HY9910020K
No Stock - Standard lead time 47 business days
£1005.46 excl VAT
What Is an Epoxy Hardener?
Adding a chemical compound to liquid epoxy resins or adhesives is often required to start the hardening and curing process. This is referred to as a two-part epoxy, and while they take longer to apply and require more care, they are more durable than a one-part epoxy. Epoxy hardeners are also known as curing agents or catalysts.
By using specific hardeners and changing the ratio, you can control how quickly the epoxy cures. Fast-curing hardeners are excellent for small projects while slow-curing hardeners have more “work time” for pouring and shaping on large projects. The right curing agent will also change the viscosity, add chemical and temperature resistance, and other properties. Hardeners produce the strong, durable epoxy you need for manufacturing and repairs in the aerospace, industrial, automotive and marine industries.
Types of Epoxy Hardeners
Many compounds can be used to catalyse epoxy resins and adhesives, and they are sometimes blended to offer the properties of each. Here’s an overview of the most common hardeners and their best uses.
- Aliphatic amine hardeners are a fast-acting agent that will cure epoxy at room temperature, making them easy to use and ideal for repairs.
- Aromatic amines have the slowest cure time of the amines but offer the best chemical resistance and thermal stability for heavy-duty work.
- Cycloaliphatic amines are an “in-between” in terms of reactivity time and thermal-chemical properties.
- Anhydride hardeners tip the scales even further towards slow cure time but impressive chemical and thermal performance. You can add accelerators to speed up the hardening process.
- Phenol hardeners have a slow cure time and require high temperatures but are often used in situations where excellent chemical and oxidation resistance are desired.
- Thiol or mercaptan hardeners are highly reactive and can even cure at sub-room temperatures but have limited temperature and chemical resistance.
When you register for an account or log in, you will receive instant access to all technical data and safety sheets. Combined with the information on each product page, you’ll see exactly what’s in each hardener so you can determine if it’s right for you.
Trust Silmid for Adhesive Products
We have a track record of over four decades of supplying leading organisations that need premium epoxy hardeners. Dozens of products are available on demand, and you can special-order hardeners or request bulk quotes. In-stock items ship the same business day with exporting and next-day delivery options. Contact us with questions about which epoxy hardener to use — our technical support team is happy to assist you.