Product Description: Intumescent Fire Door Seals, Intumescent Sealing Strip,  Fireproof Door Seal.

Material: Expandible graphite and Thermoplastic element composition

Size: The width: 10-50mm; The thickness: 1-5mm

Color: Red, brown, white, black, white

Initial expansion temperature: 199 ℃

Main expansion temperature: 350 ℃

Linear expansion ratio: ≥3 times

Function: When on fire, the rapid expansion, closed doors and windows crack, prevent smoke and heat channeling into, to ensure personal safety,Sound insulation

Application: Fire-proof door, community security door, heating furnace, heat sink, building pipe wells etc.

Advantage:

• Intumescent material expands when heated to seal around objects exposed to fire
• Smoke seal retards spread of toxic by-products of combustion
• Documented aging properties
• Excellent flexibility for easy and cost-effective installation
• Low flame spread and smoke development
• Can be cut required length
• Re-enterable (no special tools required)
• Low odor
• Made in our facility in Hebei, China
• Competitive prices

Application:

Used in fire door assemblies of timber, steer or composite construction, intumescent expands rapidly to many times (6 – 30 times) its original size upon contact with fire, it concentrates high pressure in confined spaces, exfoliates slowly to protect itself once activated and has good insulation properties. When correctly positioned in the door leaf or door frame margin, the seals expand when activated to prevent the passage of flames, hot smoke and fumes from one compartment to another.