Cleanroom Doors
Airtight Cleanroom Doors for Sealing and Pressure Control
Airtight cleanroom doors are specifically designed for controlled environments that demand rigorous standards for sealing integrity. During daily operations, these doors help minimize unnecessary air leakage at the doorway and ensure the maintenance of more stable and consistent pressure control between adjacent rooms.
For projects requiring entryways that are cleaner and more highly controlled than standard industrial doors, this type of door is often the preferred choice. These airtight cleanroom doors are particularly well-suited for cleanroom layouts involving pressure cascade control, especially in settings where routine cleaning and frequent door opening/closing cycles are integral to normal production operations or personnel movement.
What Is a Hermetic Cleanroom Do
A hermetic cleanroom door (airtight door) is used where sealing stability is required for pressure control and contamination risk reduction-commonly in GMP facilities, labs, and critical clean zones. Compared with standard cleanroom doors, hermetic doors focus on:
more stable perimeter sealing
more controlled closing behavior
surfaces and details that are easier to clean in routine use
How Airtight Sealing Is Achieved
In practice, airtight performance does not come from one single part. It depends on several details working together.
The current design is built around:
a perimeter gasket around the frame
stable closing force and hinge alignment
an optional drop seal at the bottom edge
correct sealing between the frame and the wall during installation
This is why a cleanroom door should not be judged only by appearance. The sealing result depends on door structure, hardware adjustment, and site installation as a complete system. If the project has specific leakage limits or acceptance criteria, that should be defined before production.
Materials and Construction
We currently offer two primary material options: 304 stainless steel and powder-coated steel. For many cleanroom projects, 304 stainless steel has become the de facto industry standard due to its ease of cleaning and its seamless compatibility with routine wipe-down maintenance protocols. For projects where cost sensitivity is a key factor-and provided that the operating environment permits-powder-coated steel is frequently selected as the preferred alternative. Furthermore, for projects requiring enhanced corrosion resistance, 316L stainless steel is available as a custom option.
We offer a variety of core material options tailored to specific project requirements, including honeycomb cores, PU foam, and mineral wool. During the procurement process, the selection of the core material should be determined by a comprehensive assessment of factors such as the door leaf's self-weight, the load-bearing capacity of the hardware components, and the actual performance demands of the installation site.
Common Configuration Options
Configuration options that buyers typically wish to confirm at an early stage include:
•Observation windows
•Kick plates
•Door closers
•Handle and lock configurations
•Pre-provisioned interfaces for access control systems
•Optional electrical interlocks or electromagnetic locks
•Custom opening dimensions
•Custom wall thickness matching
These options are critical because cleanroom door projects rarely lend themselves to a "one-size-fits-all" universal solution. Factors such as the door opening width, requirements for cart passage, room workflow, wall structure, and access control logic all influence the final door configuration design.
What Buyers Should Confirm Before Ordering
To reduce revision rounds during quotation, it is better to confirm the basic project inputs at the beginning.
A practical RFQ usually includes:
•door opening size
•wall thickness
•swing direction
•required material
•vision panel requirement
•whether a kick plate is needed
•whether the project needs a drop seal
•lockset or access control requirement
•whether interlock is required
•expected documents before production
We provide general assembly drawings, hardware lists, and operation and maintenance guidelines. This constitutes highly valuable information for buyers, as the selection of cleanroom doors is often finalized through a review of the technical drawings.
Shipping and packing
Company profile
Construction & Materials
Door leaf & frame
Material options: 304 SS (common for cleanability) / powder-coated steel (cost-effective projects)
Core options (project-based): honeycomb / PU foam / mineral wool (confirm required performance & weight)
Surface & cleanability
Finishes can be selected based on your cleaning routine (brushed stainless, smooth coating, etc.)
Edge and joint details are designed to support routine wipe-down with approved cleaning agents.
Common configuration options
Vision panel (size: ___ × ___ mm; glass/acrylic per project)
Kick plate (recommended for trolley traffic)
Door closer (for controlled closing and consistent sealing)
Access control hardware (handle/lock, card reader interface as required)
Project-Ready Technical Data Sheet
| Category | Item | Standard | Options / Custom | Notes |
|---|---|---|---|---|
| General | Door type | Hermetic swing door | Sliding / double-leaf (project) | Confirm workflow & opening width |
| Dimensions | Door opening (W×H) | ___ × ___ mm | Custom | Key RFQ field |
| Frame depth / wall thickness | ___ mm | Custom | Must match wall build-up | |
| Door leaf thickness | ___ mm | 50/60/70 mm (typical) | Depends on core & hardware | |
| Material | Leaf / frame | 304 stainless / coated steel | 316L SS (project) | 316L for higher corrosion resistance |
| Core | Core structure | ___ | honeycomb / PU / mineral wool | Select based on site needs |
| Sealing | Perimeter gasket | Yes | gasket material selectable | EPDM/silicone options |
| Bottom seal | Optional | drop seal / sweep | Airtight improvement option | |
| Hardware | Hinges | Heavy-duty | SS hinge | Match door weight |
| Closer | Optional | adjustable closer | Helps consistent sealing | |
| Lock/handle | Standard set | access control prep | Prep holes per lockset | |
| Options | Vision panel | Optional | various sizes | Confirm position/height |
| Kick plate | Optional | SS plate | For trolleys | |
| Performance | Airtightness | Project-based | test available upon request | Define acceptance criteria in URS |
| Electrical | Interlock / access | Optional | magnetic lock / interlock | If required by process |
| Documents | Drawings | GA + opening details | wiring (if applicable) | Issued before production |
| Packing | Export packing | carton/foam | plywood crate | Recommended for overseas |
FAQ
Everything You Need to Know
What makes a door "hermetic" in a cleanroom project?
It refers to a door configuration designed for stable sealing-gasket, alignment, closing force, and proper frame-to-wall sealing during installation.
Can you customize door opening size and wall thickness?
Yes. Send your opening size (W×H), wall thickness, and swing direction; we will provide a drawing for approval.
Should I choose 304 or 316L stainless steel?
304 is standard for most cleanroom use. 316L is selected when higher corrosion resistance is required due to chemicals or environment.
Do you offer drop seals for better airtight performance?
Yes. Drop seal is optional and should be selected based on floor flatness and site maintenance preference.
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