Product Description

High temperature sewing thread is a high-silica, heat-resistant inorganic fiber known for its superior performance under continuous exposure to high heat. With a softening point near 1700 °C, it can operate for long periods at 900 °C, withstand 1450 °C for 10 minutes, and tolerate 1600 °C for 15 seconds without degradation.

Due to its chemical stability, ablation resistance, and non-combustible nature, this thread is widely used in aerospace, metallurgy, construction, chemical, and fire-safety applications.

Product Features

• SiO₂ content ≥ 96 %

• Softening point ≈ 1700 °C, continuous use at 900 °C

• Low thermal conductivity, excellent heat insulation

• Superior chemical and corrosion resistance

• Excellent electrical insulation performance

• Low heat shrinkage rate, maintains stability under thermal cycling

• Non-asbestos and pollution-free

• Good processability, easy to sew and weave

Product Form

• High silica cloth

• High silica raw yarn and fixed-length yarn

• High silica cord

• High silica chopped yarn

• High silica needle-punched thermal insulation cotton

Applications

High temperature sewing thread (also known as fireproof thread or flame-retardant sewing thread) is used for:

• Sewing high-temperature resistant fabrics and insulation covers

• Electrical insulation and cable fillers

• Winding electric heating wires and heating elements

• Sealing, rubber hoses, and gaskets

• Fireproof tapes and reinforcement skeleton materials

Specification: diameter range 0.1 mm – 3.0 mm

Wholesale and OEM Supply

Silicapro offers wholesale supply and OEM manufacturing of high-temperature fiberglass and silica sewing threads for global clients. We provide custom diameters, spool lengths, and packaging options to meet industrial and commercial requirements.

As a leading fiberglass sewing thread manufacturer in China, Silicapro guarantees consistent SiO₂ purity, excellent tensile strength, and reliable high-temperature performance.