Hilti FS-ONE MAX Firestop Sealant & Fire Caulk – 10.1 oz Cartridge

Hilti FS-ONE MAX – Product Specifications

• Manufacturer: Hilti
• Product: FS-ONE MAX
• Product Type: Intumescent firestop sealant
• Packaging: 10.1 oz cartridge
• Application: Firestop systems for approved wall and floor assemblies
• Typical Projects: Commercial, residential, and multifamily construction
• Installation: Apply according to the applicable tested firestop system and Hilti's instructions

Firestop System Compatibility

FS-ONE MAX may be used in specific tested penetration firestop systems. Approved applications, required sealant depth, backing materials, annular space, and fire-resistance ratings depend on the individual system design.

Important: Always verify the applicable UL-listed or otherwise approved firestop system before installation. Product use alone does not establish a fire-resistance rating.

Hilti FS-ONE MAX – Installation Information

Hilti FS-ONE MAX is an intumescent firestop sealant used in approved firestop systems for penetrations through fire-rated walls and floors.

Installation Considerations

• Identify the applicable tested and approved firestop system before installation.
• Verify the permitted penetrating items, wall or floor construction, and required fire-resistance rating.
• Confirm the required annular space, sealant depth, and backing materials.
• Prepare surfaces according to Hilti's installation instructions.
• Apply the sealant in accordance with the selected firestop system design.
• Observe manufacturer requirements for application conditions, curing, and inspection.

Manufacturer Documentation

Consult Hilti's official Product Data Sheet and applicable firestop system drawings for detailed installation requirements.

Important: FS-ONE MAX must be installed as part of an approved firestop system. Do not substitute materials or alter specified installation details without appropriate approval.

Download (PDF) Product Data Sheet

Download (PDF) Instruction for Use

What is Hilti FS-ONE MAX used for?

Hilti FS-ONE MAX is an intumescent firestop sealant used in approved penetration firestop systems for fire-rated walls and floors.

Can FS-ONE MAX be used in multifamily construction?

Yes. It can be used in multifamily and commercial construction where the specified firestop system permits FS-ONE MAX.

Is Hilti FS-ONE MAX UL listed?

FS-ONE MAX is used in UL-classified firestop systems. The applicable rating depends on the specific tested system, penetrating materials, and installation details. Verify the appropriate system before use.

Can FS-ONE MAX be used around pipes and conduits?

It may be used around certain pipes, conduits, and other penetrants when permitted by the applicable tested firestop system.

What fire rating does FS-ONE MAX provide?

There is no single universal rating. Fire-resistance ratings depend on the tested assembly and approved firestop system.

How much sealant do I need?

The quantity depends on the penetration dimensions, annular space, required sealant depth, and number of penetrations. Calculate material requirements using the applicable system details.

Does Solid Source HVAC offer quantity discounts?

Yes. Purchase 12 or more cartridges and receive a 15% discount automatically at checkout, subject to the current promotion.

Can I request pricing for larger projects?

Yes. Solid Source HVAC offers contractor and project pricing for multifamily and commercial construction. Use the Contractor & Project Pricing link to request a quote.