---
product_id: 359958801
title: "2101531 FS-ONE MAX 10.1oz Tube (1 Tube) firestop fire Protection Systems"
brand: "hilti"
price: "$47.71"
currency: USD
in_stock: true
reviews_count: 3
category: "Hilti"
url: https://www.desertcart.us/products/359958801-2101531-fs-one-max-10-1oz-tube-1-tube-firestop
store_origin: US
region: United States of America
---

# Intumescent firestop action Multi-surface adhesion Wide application temp range 2101531 FS-ONE MAX 10.1oz Tube (1 Tube) firestop fire Protection Systems

**Brand:** hilti
**Price:** $47.71
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal, stop the fire – protect your space like a pro!

## Quick Answers

- **What is this?** 2101531 FS-ONE MAX 10.1oz Tube (1 Tube) firestop fire Protection Systems by hilti
- **How much does it cost?** $47.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/359958801-2101531-fs-one-max-10-1oz-tube-1-tube-firestop)

## Best For

- hilti enthusiasts

## Why This Product

- Trusted hilti brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Intumescent Power:** Expands under heat to block flames and smoke, ensuring superior firestop performance.
- • **Trusted Fire Barrier:** Ranked #11 in Fire Barrier Caulk, a must-have for professionals meeting strict fire safety specs.
- • **Eco-Conscious Formula:** Low VOC (9 g/l) and ethylene glycol-free for safer indoor air quality and LEED compliance.
- • **User-Friendly Application:** Easy-to-use 10.1 oz foam tube designed for quick, precise sealing in temperatures from 2°C to 40°C.
- • **One Seal, Multiple Surfaces:** Seamlessly bonds to concrete, masonry, drywall, metal & wood for versatile fire protection.

## Overview

The Hilti FS-ONE MAX 10.1oz is a high-performance intumescent firestop sealant designed for multi-material applications including concrete, masonry, drywall, metal, and wood. It expands when exposed to heat to effectively block fire and smoke penetration. With a low VOC formula and ethylene glycol-free composition, it supports LEED standards while offering water resistance and ease of use across a broad temperature range. A top-ranked fire barrier caulk trusted by professionals for critical fire protection needs.

## Description

High-performance intumescent firestop sealant LEED VOC: 9 g/l Base materials: Concrete, Metal, Wood, Gypsum Application temperature range: 2 - 40 °C FEATURES & APPLICATIONS Firestop sealant FS-ONE MAX 10.1OZ Features One product for a variety of common through penetrations Convenient: multi-application firestop solution for penetrations Ethylene glycol-free Cost-effective, easy-to-use solution Applications For effectively sealing most common through penetrations in a variety of base materials For use on concrete, masonry and drywall Metal pipe penetrations: copper, steel and EMT Insulated metal pipe penetrations: steel and copper Plastic pipe penetrations: closed or vented

Review: Expensive Caulk but needed per specifications - Price was too high for the product, but required for spec's
Review: Works - I used this to install 1/8th inch screening over my 1/4 inch crawlspace vents. This is recommended to keep embers from wildfire from getting into your crawlspace and setting your house on fire.

## Features

- Intumescent Fire Caulk
- Concrete
- Masonry
- Drywall

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Y98KN77 |
| Best Sellers Rank | #115,684 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Fire Barrier Caulk |
| Brand | HILTI |
| Color | Red |
| Date First Available | September 14, 2021 |
| Item Form | Foam |
| Item Weight | 10.1 ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | Hilti |
| Material | Concrete, Masonry, Drywall |
| Number of Items | 1 |
| Surface Recommendation | Hard Floor |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** HILTI
- **Color:** Red
- **Item Form:** Foam
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces

## Images

![2101531 FS-ONE MAX 10.1oz Tube (1 Tube) firestop fire Protection Systems - Image 1](https://m.media-amazon.com/images/I/31S0NO7yngL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Expensive Caulk but needed per specifications
*by P***C on March 28, 2024*

Price was too high for the product, but required for spec's

### ⭐⭐⭐⭐⭐ Works
*by M***H on August 13, 2023*

I used this to install 1/8th inch screening over my 1/4 inch crawlspace vents. This is recommended to keep embers from wildfire from getting into your crawlspace and setting your house on fire.

### ⭐⭐⭐ Hard to Apply
*by K***R on December 15, 2022*

This stuff is really thick and not easy to spread. We went through a ton of gloves finishing our project. We needed it for our firewall to pass inspection and it did do the job.

## Frequently Bought Together

- HIlti 2101531 FS-ONE MAX 10.1oz Tube (1 Tube) firestop fire Protection Systems
- HIlti 2116245 Firestop Cable Disc CFS-D 1" firestop fire Protection Systems
- 3M Fire Barrier Moldable Putty Stix MP+, Red Color, One-Part, Re-Enterable, Intumescent, 1.45 in x 6 in

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-03*