38-4321 - Weldas 21-Inch Green FR Cotton Welding Sleeves with Velcro Adjustment

Technical Overview of Weldas 38-4321 FR Sleeves

The Weldas 38-4321 Green Flame Retardant Cotton Sleeves are engineered to provide reliable secondary protection for industrial personnel engaged in light-duty welding and fabrication tasks. Manufactured from high-grade, 9-ounce cotton fabric, these sleeves are chemically treated to impart flame-retardant properties that withstand the rigors of industrial environments. The material is compliant with ASTM D6413 vertical flame test standards, ensuring that the fabric will self-extinguish upon the removal of an ignition source, thereby significantly reducing the risk of burn injuries caused by flash fires or incidental sparks.

Designed with ergonomics and functionality in mind, the 38-4321 model features a generous 21-inch length, offering comprehensive coverage from the wrist to the upper arm. This extended profile is critical for protecting the operator's skin from ultraviolet (UV) radiation generated during arc welding processes, as well as from light spatter and thermal radiation. The structural integrity of the sleeve is maintained through a dual-closure system. The upper terminus is equipped with a wide, adjustable Velcro strap that allows the user to secure the sleeve firmly around the bicep, preventing slippage during overhead or positional maneuvers. Simultaneously, the wrist aperture is fitted with a durable elastic band that ensures a snug interface with welding gloves, effectively sealing out particulate matter and sparks.

These sleeves are particularly advantageous in applications where the heavy weight and thermal retention of leather are undesirable, such as in high-temperature ambient environments or during precision TIG welding operations. The 9 oz. cotton construction offers superior breathability compared to leather alternatives, mitigating heat stress and enhancing operator comfort over prolonged shifts. Furthermore, the flame-retardant treatment is durable, allowing the sleeves to be laundered while retaining their protective characteristics for a specified number of cycles, offering a cost-effective and hygienic PPE solution.