Box of 25 - Silicone Sealant Firebreak 33 is a one part fire resistant neutral curing silicone sealant with excellent flexibility and acoustic performance. When subjected to high temperatures it forms a durable char that restricts the passage of smoke and fire. It is easy to apply and is designed for internal or external use wherever high movement fire resistant and/or acoustic joints are required.

Firebreak 33 is an easy-to-apply, highly flexible silicone sealant designed to provide fire protection wherever internal or external high movement and/or acoustic joints are used. When exposed to high temperature it reacts to form a durable char that restricts the passage of smoke and fire for up to 4 hours.

Key Features & Benefits

• Independently tested to EN 1366-3: 2009 and EN 1366-4: 2006 providing up to 4 hours fire resistance

• Fire tested in conjunction with 100mm flexible partitions and concrete floors to offer a wide range of specifications

• Gap sizes up to 100mm & seals around metal pipes and cable bundle penetrations

• Low modulus: up to 25% movement in constant service conditions

• Maintains acoustic performance of substrate

• Excellent adhesion to most building substrates, including porous materials, without the use of primers

• Tested in conjunction with standard PE backing rod

• Non-toxic, low smoke, mould resistant and halogen free

• Good durability

• Quality assured including ISO 9001, CE Marking and independent third party product certification

Typical Applications

• Construction/movement joints in fire separating masonry and partition walls an concrete floors

• Acoustic joints at junctions of lightweight partitions with walls and floors

• Deflection joints between rigid walls or partitions and floor soffits

• Fire resistant glazing applications including curtain walls

• Service penetration seals to cables and metallic pipes where they pass through fire resistant walls and floors

• Providing a cold smoke and acoustic seal to gaps around plastic pipes prior to the fitting of Firebreak FX Series Pipe Collars

• Bedding offire grills etc., when fitted to uneven service

Testing & Certification

• Extensive testing to EN 1366-3: 2009 and EN 1366-4: 2006 providing up to 4 hours fire resistance to linear gaps and service penetrations

• Zero flame spread when tested to EN ISO 11923-2: 201O giving Class E classification to EN 13501-1:2007 + Al
• Classification to EN 13501 and CE Mark (ETA 21/0223 & 21/0221)

• Mechanical and durability testing to EAD 3S0454-00-1104 & EAD 350141-00-1106

• Third party product certification with UL International (Certificate# UL-EU-00708)

• Acoustic testing to EN ISO 140: Part 3: 1995 sealing multiple gaps in a Rw 54 dB rated acoustic partition with no loss of acoustic performance

The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.