Reliable Bessive Fire Protection Systems for Various Openings
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Product Highlights
- Up to 4 Hours Fire Rating: Provides up to 4 hours of fire protection per ASTM E 814 (UL 1479) standards.
- Easy Hand Application: One-part intumescent putty applied by hand without mixing or tools.
- Noise Reduction & Smoke Seal: Effective draft and cold smoke seal with STC-Rating up to 54.
- Versatile Material Compatibility: Non-corrosive to metal and safe for synthetic cable jackets.
- Re-enterable Design: Allows re-entry for maintenance, optimizing time and costs post-installation.
- OEM/ODM Customization: Offers bespoke firestop product OEM/ODM services from samples.
- FM Approved & UL Listed: Meets stringent building requirements with FM and UL certifications.
- Long Shelf Life: Shelf life of 30 years ensures long-term integrity and performance.
Product Attributes
- After-sales Service
- Shelf Life 30 Years
- Application
- Flame-Resistant Sealant
- Construction Method
- Hand-Applied Fire Sealant
- Model NO.
- NB850
- Material
- Acrylic Fireproof Sealant
- Applications
- HVAC Ducts and Vents,Blank Openings,Busways
- Standard
- FM Approved,UL Listed
- Spec Per Box
- 5PCS/Carton
- Fire Rating
- up to 4 Hours
- Water Activated
- No
- Transport Package
- Carton Box+Pallet
- Specification
- 10.1oz per piece
- Trademark
- 3M
- Origin
- U. S. a.
- HS Code
- 3214109000
- Production Capacity
- 1000000 Box Per Year
- Package Size
- 30.00cm * 20.00cm * 10.00cm
- Package Gross Weight
- 2.000kg
Product Images of Reliable Bessive Fire Protection Systems for Various Openings
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Product Description






Highlights
- Experience the future of fire protection with our pliable, one-part intumescent firestop material, meticulously engineered for precision fit in wall openings and through penetrations.
- Crafted to perfection, it not only provides an impeccable draft and cold smoke seal but also significantly diminishes noise transfer, elevating the comfort and safety of your environment.
- Rigorous testing ensures our firestop's unparalleled performance, providing through penetration and membrane protection for up to an impressive 4 hours per ASTM E 814 (UL 1479) standards.
- Our product exhibits outstanding adhesion, bonding seamlessly with a vast array of construction materials, proving its versatility and reliability.
- Engineered to be non-corrosive to metal and perfectly compatible with synthetic cable jackets, assuring long-term integrity and performance.
- A user-friendly solution applied effortlessly by hand, requiring no mixing or tools, ensuring ease and efficiency for all users.
3M™ Fire Barrier Moldable Putty Stix MP+ This innovative, one-part, re-enterable intumescent putty is expertly crafted to effortlessly firestop through penetrations and blank openings in fire-rated assemblies. In its distinctive dark red hue, the moldable putty stick ensures up to 4 hours of steadfast fire protection. These stix provide an effective draft and cold smoke seal, while also aiding in noise reduction.
Pliable, Conformable and Shapeable for Exacting Coverage
When applications call for precise, conformable coverage, our pliable 3M™ Fire Barrier Moldable Putty Stix MP+ are the go-to solution for an extensive range of firestop needs, surpassing the limitations of strips, wraps, or rolls. These ready-to-use stix boast exceptional adhesion to most construction substrates and remain non-corrosive on metal, making them perfect for use with steel or plastic electrical outlet boxes. They are also safe for synthetic cable jackets, making them ideal for cable bundle firestopping. Designed to resist crumbling and drying out, they demonstrate superb aging properties and allow for re-entry, optimizing both time and costs post-installation. Technicians will find them incredibly straightforward and economical to install, molding the material by hand directly onto the substrate without the need for mixing or tools.
Recommended Applications
- Protection of membrane penetrations for listed metallic and non-metallic electrical boxes, ensuring compliance with building requirements.
- Designed to meet stringent building requirements, our wall opening protective solutions ensure optimal safety and security.
- Expertly seals gaps between cables in multiple penetrations, including fiber optic inner ducts, to maintain integrity and performance.
- Perfect for insulating pipe, electrical conduit, and metal pipe penetrations, offering comprehensive protection and peace of mind.
Fully Tested and Approved
Our intumescent 3M™ Fire Barrier Moldable Putty Pads MPP+ have undergone rigorous firestop testing for up to 4 hours in strict accordance with ASTM E 814(UL 1479). Additionally, they meet testing standards according to ASTM E 119 (UL 263) up to 2 hours when installed following the UL wall-opening protective listing (UL Category CLIV), and contribute to noise reduction with an STC-Rating of 52 when evaluated on back-to-back electrical boxes.
Reliable and Affordable Fire Protection
Our 3M™ Fire Barrier Moldable Putty Stix MP+ stands out as a highly effective, user-friendly installation option, part of a comprehensive range of fire protection products that deliver exceptional, long-lasting solutions for commercial, industrial, and residential applications. As an esteemed leader in fire protection, 3M is committed to offering a diverse line of products that meet even the most rigorous firestop requirements. Discover the perfect solution from our industry-leading range of fire protection products that are trusted by professionals worldwide.
Typical Properties
Details
| Application | Commercial Construction |
| Brands | 3M™ |
| Case Quantity | 100.0 Bags per Case,20.0 Bags per Case |
| Composition | Acrylic |
| Container Size (Metric) | 18.9 Liter, 300 ml, 591 ml, 798 ml |
| Container Size (Imperial) | 2 Gal. (US), 5 Gal. (US), 10.1 fl oz (US), 20 fl oz (US), 27 fl oz (US) |
| Expansion Temperature (Fahrenheit) | 350 ºF |
| Hardness | 45 Shore A |
| Fire Rating | Up to 4 hours |
| Fire Resistance Type | Intumescent |
| Maximum Service Temperature (Celsius) | 82 ºC |
| Maximum Service Temperature (Fahrenheit) | 180 ºF |
| Minimum Service Temperature (Celsius) | -28 ºC |
| Minimum Service Temperature (Fahrenheit) | -20 ºF |
| Product Color | Red |
| Product Form | Cartridge, Drum |
| Product Type | Sealant |
| STC Rating | Up to 54 in a 54 Rated Wall |
| Smoke Developed Index | 0 |
| Smoke Seal | YES |
| Water Activated | NO |
| Water-tight | NO |
| eClass 14 Classification Group | 15310200 |
Dimension and Classification
Installation Instructions 



Product Applications

Packing and Delivery

Who We Are
Over the years, Shanghai Lanyan Fire Protection Engineering Co., Ltd. has successfully executed fire prevention and sealing projects across a wide spectrum of industries in China. Our esteemed clients hail from sectors including communication, electric power, petrochemicals, power plants, pharmaceuticals, medical devices, food and beverage, electronics, logistics, property management, semiconductors, electromechanical, and many more, featuring prominently among Fortune 500 companies. Our prestigious clientele features industry giants such as B*SF, Roche Pharmaceuticals, Intel, Infineon, Dow, NVIDIA, Fluor, Bechtel, WorleyParsons, CH2M HILL, Exyte, Tebodin, EC Harris, Zublin, Bencer, State Grid Corporation of China, China Southern Power Grid, Sin*pec, PetroChina, and a host of others.
Tailoring our approach to meet diverse customer requirements, we engage in product sales, system installation, and offer bespoke firestop product OEM/ODM services. We are committed to collaborating with you to elevate the building safety standards of your nation.
FAQ

About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI244965". Items marked "" are certified.
Company Profile
Shanghai Lanyan Fire Protection Engineering Co., Ltd. is a professional provider of firestop materials and engineering services, and is a CLASS-I distributor and authorized contractor for 3M firestop materials. Leveraging China's strong production and supply chain resources, we provide professional firestop products manufactured in China and offer OEM and ODM services for global customers. With a sales and technical service team with professional experience, as well as cooperation with leading manufacturing enterprises in China for research, production, and certification testing, we are your one-stop service provider for firestop systems in China.
After years of development, Shanghai Lanyan Fire Protection Engineering Co., Ltd. Has completed fire prevention and sealing projects for numerous clients in various industries in China, including communication, electric power, petrochemicals, power plants, pharmaceuticals, medical devices, food and beverage, electronics, logistics, property management, semiconductors, electromechanical, and other fields represented by Fortune 500 companies. Our clients include: BASF, Roche Pharmaceuticals, Intel, Infineon, Dow, NVIDIA, Fluor, Bechtel, WorleyParsons, CH2M HILL, Exyte, Tebodin, EC Harris, Zublin, Bencer, State Grid Corporation of China, China Southern Power Grid, Sinopec, PetroChina, etc.
According to different customer needs, the company undertakes product sales, system installation, firestop product OEM/ODM services, etc., to work with you to improve the building safety level of your country.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Room 427, Building 2, No. 1243 Dongfang Road, Pudong New District, Shanghai City
-
Plant Area
- 200 square meters
-
Number of Employees
- 24
-
Registered Capital
- 5,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 1 Carton
-
Supply Chain Partners
- 4
Our Production Capability & Technical Expertise
-
Main Products
- Passive Fire Protection
-
Customization Options
- Customization from Samples
-
R&D Engineers
- 9 people
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2015-09-28
-
Export Year
- 0 Years
-
Main Markets
- Domestic
-
Repeat Buyers Choice
- 10%~30%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- Yes
FAQ
- What is the fire rating of this product?
- The product provides up to 4 hours of fire protection per ASTM E 814 (UL 1479) standards.
- How is the product applied?
- It is a one-part intumescent putty that can be applied effortlessly by hand, requiring no mixing or tools.
- Is the product suitable for metal surfaces?
- Yes, it is non-corrosive to metal and perfectly compatible with synthetic cable jackets.
- Can the product be used for noise reduction?
- Yes, it provides an effective draft and cold smoke seal and aids in noise reduction with an STC-Rating of up to 54.
- What certifications does the product have?
- The product is FM Approved and UL Listed, meeting stringent building requirements.
- Does the product allow for re-entry after installation?
- Yes, it is designed to resist crumbling and drying out, allowing re-entry for maintenance.
- What is the shelf life of the sealant?
- The product has a shelf life of 30 years.
- Is customization available for this product?
- Yes, OEM/ODM services are available, allowing customization from samples.
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