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Epoxies, Etc... has two Flame Retardant epoxies listed with Underwriters Laboratory (UL). The 20-3651\40 FR and 50-3150 FR Epoxy Potting Compounds have been tested and passed UL 94 VO.

The UL 94 VO test uses a 1/2" x 5" specimen which is held at one end in the vertical position. A burner flame is applied to the free end of the specimen for two 10 second intervals separated by the time it takes for flaming combustion to cease after the first application. Two sets of 5 specimens are tested. Cotton is placed below the flame end of the cotton. The following are recorded for each specimen:

• Duration of flaming combustion after the first burner flame application.
• Duration of flaming combustion after second burner flame application.
• Duration of glowing combustion after second burner flame application.
• Whether or not flaming drips ignite cotton placed below specimen.
• Whether or not specimen burns up to holding clamp.

Criteria Conditions

94V-0

94V-1

94V-2

Total flaming combustion for each specimen

£ 10s

£ 30s

£ 30s

Total flaming combustion for all 5 specimens of any set

£ 50s

£ 250s

£ 250s

Flaming and glowing combustion for each specimen after second burner flame application

£ 30s

£ 60s

£ 60s

Cotton ignited by flaming drips from any specimen

NO

NO

YES

Glowing or flaming combustion of any specimen to holding clamp

NO

NO

N