30S/3 Navy Blue‑303 Meta‑Aramid Sewing Thread is spun from 100% meta‑aramid staple fiber with inherent flame‑retardant performance. No additional chemical flame‑retardant finishing is applied, so its flame‑resistant property will not fade after repeated laundering.
As 3‑ply heavy‑duty aramid thread, Ne 30S/3 delivers higher breaking strength compared with 40S/2, ideal for heavy‑weight protective fabrics and high‑stress seam positions. Navy Blue‑303 is classic deep navy shade widely used for official fire‑department uniforms, heavy‑duty FR turnout gear and dark‑toned heavy protective workwear. It achieves excellent color fastness to washing and light, keeping stable dark‑blue appearance in long‑term PPE service. It feeds smoothly on industrial sewing machines for heavy‑material stitching. Under flame exposure, it behaves self‑extinguishing, non‑melting and non‑dripping. Seam strength remains reliable after multiple washing cycles, with good resistance to high temperature, weak acid, weak alkali and organic solvents。
Key Features
100% meta‑aramid staple fiber, inherent flame retardant, LOI ≥29%, self‑extinguishing, no melt‑drip
Classic Navy Blue‑303 color, preferred for fire‑service turnout uniforms & heavy‑duty dark FR protective garments, superior wash & light color fastness
Ne 30S/3 three‑ply heavy‑duty construction, higher tensile strength for heavy‑weight fabric & high‑stress seams
Low lint, stable feeding performance for industrial sewing machines working on thick protective textiles
Excellent seam retention after repeated laundering; flame‑retardant performance will not degrade
Outstanding heat‑resistance and abrasion resistance, resistant to weak acid, weak alkali and organic solvents
