Vacuum Sealed Door for VPI Chambers | Specifications & Standards

Product Specifications

Technical details and manufacturing context for Vacuum Sealed Door

Definition

The Vacuum Sealed Door is a critical component of Vacuum-Pressure Impregnation (VPI) Chambers, providing secure access while maintaining the required vacuum and pressure conditions during the impregnation process. It ensures no air leakage during vacuum cycles and withstands pressure differentials during resin injection phases. The door creates an airtight seal through mechanical compression of sealing gaskets against a precisely machined sealing surface. When closed and locked, it compresses elastomeric or metallic seals to prevent gas exchange between the chamber interior and external environment, maintaining vacuum levels as low as 0.1 mbar or pressure up to several bars. Constructed from stainless steel grades 304 or 316L, the door features neoprene or Viton seals and an optional tempered glass viewport. Key parameters include an operating pressure range of 1.0–1.6 MPa, a leak rate of 1.3e-9 to 1.3e-7 Pa·m³/s (ISO 21360), and a sealing temperature range of -40 to 85°C. Door diameters range from 400 to 2000 mm, with thicknesses from 20 to 60 mm, and weights from 50 to 500 kg. Surface finish varies from 0.4 to 1.6 μm Ra (ISO 4287). Closing time ranges from 10 to 60 seconds, with manual or pneumatic actuation. Power supply is 24 V DC ±10%, and ingress protection is IP54 to IP65 (IEC 60529). These values are directory reference ranges and must be confirmed for the specific model and application. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The door operates by mechanical compression of sealing gaskets against a precisely machined sealing surface. When closed and locked, it compresses elastomeric or metallic seals to prevent gas exchange between the chamber interior and external environment. This maintains vacuum levels as low as 0.1 mbar or pressure up to several bars. The sealing effectiveness depends on the applied force and the integrity of the sealing surfaces.

Common Materials

Stainless Steel (304/316), Neoprene/Viton Seals, Tempered Glass Viewport

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa
Leak Rate	1.3e-9–1.3e-7 Pa·m³/s	Helium leak test; lower is better for high vacuumISO 21360
Sealing Temperature Range	-40–85 °C	Elastomer seal limits; outside range requires metal seal
Door Diameter	400–2000 mm	Custom sizes available on request
Door Thickness	20–60 mm	Depends on pressure rating and material
Weight	50–500 kg	Includes door and frame assembly
Material Grade	304/316L	316L for corrosive or high-purity applicationsASTM A240
Surface Finish	0.4–1.6 μm Ra	Lower for cleanroom or food-grade useISO 4287
Closing Time	10–60 s	Manual or pneumatic actuation
Actuation Type	Manual/Pneumatic	Pneumatic for remote or automatic operation
Power Supply	24 ±10% V DC	For solenoid valves and sensors
Ingress Protection	IP54–IP65	IP65 for washdown environmentsIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Door Flange Part
Provides mounting surface and sealing interface with chamber

Material: Stainless Steel
Sealing Gasket Part
Creates airtight seal when compressed against sealing surface

Material: Viton/Neoprene
Locking Mechanism
Applies uniform compression force to seal and secure door

Material: Stainless Steel
Viewport
Allows visual inspection of chamber interior without breaking vacuum

Material: Tempered Glass with O-ring seal
Hinge System
Enables smooth opening and closing while maintaining alignment

Material: Stainless Steel with bearings

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Vacuum-Pressure Impregnation (VPI) Chamber

View system integration details

Manufacturers of Vacuum Sealed Door

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Frequently Asked Questions

What is the operating pressure range for this vacuum sealed door?

The directory lists an operating pressure range of 1.0–1.6 MPa. Always confirm the exact rating for your specific model with the manufacturer.

What leak rate can be expected?

The leak rate is specified as 1.3e-9 to 1.3e-7 Pa·m³/s, tested per ISO 21360 using helium leak test. Lower values are better for high vacuum applications. Verify the actual leak rate for your unit.

What materials are used for the door and seals?

The door is typically made of stainless steel 304 or 316L (ASTM A240). Seals are neoprene or Viton. A tempered glass viewport is optional. Confirm material suitability for your process conditions.

What are the available sizes and weights?

Door diameters range from 400 to 2000 mm, thickness from 20 to 60 mm, and weight from 50 to 500 kg. Custom sizes are available on request. These are reference ranges; consult the supplier for exact dimensions.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10^-6 mbar vacuum to 10 bar positive pressure
other spec:	Leak rate: <1×10^-9 mbar·L/s, Seal material dependent
temperature:	-50°C to +200°C

Vacuum Sealed Door

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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Compliance & Manufacturing Standards