Glassfiber Sleeve with Fireproof sleeve make the high temperature test.

The fire gun is 1000-1600 degree C, put the fire on the surface of the fireproof sleeve, we test the sleeves inside temperature. After 2 min, the inside temperature is less than 60 degree C.

The glassfiber sleeve is 3 mm thickness, the fire sleeve is 3-5 mm thickness.

Certifications for firesleeve:
MSHA, -70 degree C Test, 260 degree C test, UL 1441, ROHS, REACH
DIN EN45545-2:2020 Rail Certificateion
DIN 45545 Low smoke toxicity
DIN 54837/5510-2 Rail vehicle certificated for resistant to combustibility
NF EN ISO 11925-2 (15 AND 30 SEC)
TB/T 3138-2018 Technical specification of flame retardant materials for railway locomotive and vehicle