In the data center, a small brush is an important barrier to ensure the stable operation of servers.
In the era where data is king, the number of global data centers is experiencing explosive growth.
In these data centers, the seemingly insignificant component of cabinet sealing brushes is playing an irreplaceable role.

Key functions and applications of cabinet sealing brushes
The multifunctionality of the cabinet sealing brush makes it an indispensable component of modern data centers. It can meet various needs from basic principles to adapting to complex environments.
- Dust seal
The high-density bristles of the brush can effectively block dust from entering electronic devices. This is particularly important for ensuring the normal operation of precision equipment such as servers. - Neat and tidy wiring
There are usually a large number of cable connections inside the cabinet, and the sealing brush can make the wiring inside the box clearly arranged and labeled, making it easy for daily maintenance and repair work. - Thermal insulation and energy conservation
By maintaining the airtightness inside the cabinet, the sealing brush helps to maintain the airflow circulation in the cold aisle, allowing the server to operate stably while reducing energy consumption. - Flame retardant and fireproof
High quality cabinet sealing brushes are made of flame-retardant materials (such as UL94-V0 grade), which is an important safety feature for data centers to prevent the spread of fire. - Insect and water resistance
Dense bristles can prevent insects and ants from invading and biting the circuit; At the same time, it can also block some water vapor from entering the cabinet.
The application scenarios of cabinet sealing brushes are diverse, including cabinet top, side, bottom, servers or switches inside the cabinet, as well as cable outlet positions on raised floors, computer room ceilings, and cold aisle data center door positions.

How to choose high-quality cabinet sealing brushes
Choosing the appropriate cabinet sealing brush requires consideration of multiple technical parameters to ensure that it can meet the specific environmental requirements.
- Filament material
Nylon (PA): Nylon bristles, such as PA6 and PA66, have good wear resistance and resilience, making them a commonly used choice. The online cable can maintain toughness and is not easily deformed during long-term insertion.
Polypropylene (PP): PP material is more economical than PA, but its elasticity is relatively poor. - Flame retardant grade
The data center environment has extremely high requirements for fire safety, and high-quality sealed brushes should meet the UL94-V0 flame retardant level, which is the highest flame retardant level to prevent fires and avoid the production of toxic and harmful gases. - Tensile performance
Industry standards require that the tensile strength of the bristles be greater than or equal to 6KG (for products with a bottom width of 3mm) to ensure that the bristles are not easily shed, thereby ensuring the cleanliness and sealing inside the cabinet. - Structural design
The cabinet sealing brush needs to be designed reasonably for easy installation, and there are various bracket shapes to choose from, such as H-shaped, F-shaped, T-shaped, U-shaped, Y-shaped, etc., to adapt to different installation scenarios.

Customization capability
High quality suppliers can customize cabinet brushes of different specifications, functions, and sizes according to the special needs of the cabinets, including the color of the bristles (usually black, white, transparent), wire diameter (Ø 0.05mm – Ø 2.00mm), etc.
There was once a surprising discovery: some top data center operations personnel would regularly check the status of cabinet brushes, just like checking servers. Because they are well aware that the V-0 brush with the highest flame retardant rating not only prevents dust from entering, but also serves as the first line of defense for fire safety – which is particularly important after some big data center fire incidents.
With the development of 5G, IoT, and artificial intelligence, the demand for precision protection in future data centers will be higher. The seemingly simple product of cabinet sealing brushes will continue to evolve and play a key role in the protection of digital infrastructure.



