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Fire Door Seals - Aluminium

Sealmaster N30. 30 min Fire & Smoke seal

Sealmaster N30. 30 min Fire & Smoke seal

£25.74 £21.45 (ex. VAT)
Blade type fire and smoke seal | BS / EN 30 min rated. Sold in 1050mm lengths.

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Key Points:
  • A 30 minute fire-resistance seal.
  • BS476 part 22.
  • A blade type Smoke and fire seal from Sealmaster. 
N30 is a combined fire and smoke seal. It is recommended for single action FD30S fire and smoke resistant doorsets. 

The extruded aluminium alloy profile contains substantial reserves of Sealmaster intumescent material in a single reservoir. An angled, self-extingusihing elastomeric blade gives maximum efficiency with minimum drag.  

As the fire develops and reaches the N30 seal, the Intumescent  material foams, swells and fills the gaps between the door and the frame. Since the foam remains soft during the period of the intumescent action, it has the ability to re-seal the gap, should the door wrap or be moved for any reason.

N30 fitted to a 30 minute fire door, was tested by TRADA. It retained stabilty, integrity and insulation well in excess of the 30 minute rating. Copies of the test reports are available on request. N30 fire and smoke seals have been tested and approved by Certifire to conform to BS476 part 22. This is the most demanding 3rd party certification scheme in the industry.

  • Sold in 1050mm lengths.


We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on Tel: +(0)1329 841416 or email


All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 Code of Practice for the Installation and Inspection of Fire Stopping.


It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.

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