Therm-A-Seal 10mm x 4mm x 2100mm Intumescent Fire Seal

Therm-A-Seal 10mm x 4mm x 2100mm Intumescent Fire Seal

Therm-A-Seal is a high-performance graphite-based intumescent seal designed to help protect fire-resisting door assemblies.

When exposed to fire, the intumescent material expands to help seal the gap between the door leaf and frame, restricting the passage of fire and hot gases.

For most latched, single-leaf, single-swing FD30 timber fire-resisting door assemblies, a single 10mm x 4mm Therm-A-Seal fitted down each jamb and across the head will normally suffice. For unlatched doors, the required seal size can vary depending on the doorset construction and supporting fire test evidence.

Therm-A-Seal is manufactured using exfoliating graphite-based intumescent material, providing high expansion characteristics and firm pressure when activated by heat.

Features & Benefits

• Size: 10mm x 4mm x 2100mm
• Graphite-based intumescent material
• Suitable for many FD30 fire door applications
• High expansion characteristics
• Suitable for timber fire-resisting door assemblies
• Available in Black, Brown and White
• Fire only – no smoke brush
• Certifire CF387
• 2100mm standard length

The manufacturer lists 10 × 4mm amongst the standard sizes, with a 2100mm length and Black, Brown and White amongst the available colours.

Important: The required intumescent seal size and configuration should always be confirmed against the fire door manufacturer's test evidence or certification.