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West System 205 Fast Hardener for R105 Epoxy Resin is a medium-viscosity epoxy curing agent. It is used, in the majority of situations, at lower temperatures to produce a moderately fast cure that develops it’s physical properties quickly at room temperature, and is capable of curing down to a temperature as low as 10-degree C.

Mix Ratio: 1 Part hardener (H205 or H206) to 5 parts resin by volume.

Resin

Hardener 5:1

Hardener 3:1

Size

Product #

Size

Product #

Size

Product #

500 mL

RA105

100 mL

HA205 Fast

160 mL

HA207 Special Coating

HA206 Slow

HA209 Extra Slow

1 L

RB105

200 mL

HB205 Fast

330 mL

HB207 Special Coating

HB206 Slow

HB209 Extra Slow

4 L

RC105

800 mL

HC205 Fast

1.33 L

HC207 Special Coating

HC206 Slow

HC209 Extra Slow

20 L

RD105

4 L

HD205 Fast

6.7 L

HD07 Special Coating

HD206 Slow

HD209 Extra Slow

200 L

RF105

40 L

HF205 Fast

67 L

HF207 Special Coating

HF206 Slow

HF209 Extra Slow

For more specific application guidance, please refer to the Product Data Sheet and Engineering Data.