Cleanroom Doors, Windows and Interlock Systems

Airtight Cleanroom Swing Door

A pressure-control swing doorset with a rigid insulated leaf, continuous EPDM frame seals and a concealed automatic bottom seal that closes the threshold gap.

Four-Side Sealing Strategy
Automatic Bottom Drop Seal
Rigid Insulated Leaf
Threshold-Free Passage

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Product Introduction

The Airtight Cleanroom Swing Door controls leakage through the doorway by combining accurate leaf-to-frame alignment with compressible seals along the head, jambs and threshold. The bottom seal retracts while the door moves and drops against the finished floor when closed. A stiff polyurethane-cored leaf keeps the gasket contact plane straight, while adjustable hinges and closer force allow compression to be maintained without excessive manual effort.

Key Features

Continuous jamb and head gaskets limit bypass paths around the closed leaf.

A concealed drop seal closes the floor gap without a permanent raised threshold.

Rigid closed-cell insulation helps maintain a straight sealing edge over the leaf height.

Adjustable hinges compensate for settlement and restore uniform gasket compression.

Flush vision panels and interlock magnets can be integrated without exposed cavities.

Customer Product Concerns

Airtight swing doors must reduce leakage without becoming difficult to operate or introducing thresholds that obstruct carts and cleaning equipment.

Air escapes through the floor gap even when jamb seals are compressed.The automatic drop seal lowers across the full leaf width only after closing.

Excessive gasket compression makes the door hard to latch.Matched seal hardness, adjustable hinges and controlled closer force create repeatable contact.

A raised threshold disrupts trolley passage and floor cleaning.A retracting bottom seal works against the flat finished floor without a permanent sill.

Leaf warping creates isolated leakage points along one jamb.A rigid foam core and reinforced perimeter preserve a consistent sealing plane.

Typical Applications

Personnel airlocksSterile compounding suitesPressure-cascade laboratoriesIsolation support roomsHigh-containment change areas

Technical Parameters

Representative construction values for a gasketed airtight cleanroom swing door are listed below.

Core Material	Closed-cell rigid polyurethane foam
Panel Thickness	50 mm door leaf
Effective Width	800-1200 mm single-leaf clear opening
Maximum Length	2400 mm maximum leaf height
Steel Facing Thickness	0.8-1.0 mm powder-coated galvanized steel skins
Core Density	40-45 kg/m³ polyurethane
Thermal Conductivity	0.022-0.028 W/(m·K) typical polyurethane core range
Surface Finish	Smooth powder-coated steel with flush sealed trims
Joint Type	Three-sided EPDM compression gasket plus concealed automatic bottom drop seal
Customization	Available based on the intended application and operating environment

Available Options

Magnetic perimeter sealsInterlock-ready flush maglockHands-free automatic openerDouble-glazed observation window

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