Heat Resistant Gloves

Understanding EN 407 Thermal Performance Levels

EN 407 tests gloves across six specific thermal hazards, each rated 1-4. Contact heat measures how long the glove delays heat transfer when pressed against metal cylinders heated from 100°C to 500°C. Level 1 provides 15 seconds at 100°C; Level 4 delivers 15+ seconds at 500°C. Convective heat tests protection against direct flame and hot gases – critical for welding operations where molten metal gloves must withstand arc flash. Radiant heat measures infrared radiation protection from furnaces and flames, essential for foundry work where workers face constant heat radiating from molten metal without direct contact.

Performance levels appear as pictograms on the glove itself. Check individual product listings for exact certification levels – not all high temperature gloves meet the same performance tier even at identical temperature ratings.

Material Selection and Temperature Capabilities

Kevlar aramid fibres dominate modern industrial heat resistant gloves, delivering thermal protection to 425°C with maintained dexterity for welding and hot metal fabrication. Aluminised fabrics reflect 95-97% of radiant heat, making them essential for foundry gloves and glass manufacturing where infrared radiation intensity exceeds direct contact risk. Leather offers natural thermal insulation combined with abrasion resistance – ideal for welding heat gloves and general hot material handling. Terry cloth linings absorb moisture during extended wear in hot environments. Wool felt insulation provides traditional extreme temperature protection for foundry operations handling molten metal.

Material degradation reduces protection over time. Replace gloves showing heat damage, material hardening, or visible deterioration regardless of stated temperature rating.

Matching Temperature Rating to Actual Contact Risk

Select thermal protection gloves based on material temperature at point of contact, not ambient air or maximum equipment capability. Example: commercial ovens operate at 200-250°C, but items removed immediately typically measure 150-180°C. Specify 250°C rated gloves for safety margin. Welding operations where arc temperature exceeds 3,000°C but handled metal measures 300-500°C require 500°C rated protection. Contact duration matters too – brief contact (under 5 seconds) with 200°C surfaces may be adequately protected by lower-rated gloves relying on thermal delay, whilst sustained handling demands ratings well above material temperature. When uncertain, always specify higher temperature ratings.

Brands stocked include Ansell, Portwest, Polyco, and specialist manufacturers. Available in various sizes, lengths, and temperature ratings for single pairs or bulk industrial orders.