Industrial Vacuum Tumbler Door and Seal - Component Specifications

Product Specifications

Technical details and manufacturing context for Door and Seal

Definition

The Door and Seal is a critical component of an Industrial Vacuum Tumbler, consisting of the access door and its associated sealing mechanism. This assembly allows for loading and unloading of materials while maintaining the vacuum environment essential for processes like marination, curing, or drying. The seal prevents air ingress that would compromise vacuum levels, ensuring consistent process conditions and product quality. The door provides secure closure through mechanical locking mechanisms (latches, clamps, or bolts), while the seal (typically a gasket or O-ring) compresses against the door frame when closed, creating an airtight barrier. In vacuum operation, external atmospheric pressure further compresses the seal against the mating surfaces, enhancing the seal's effectiveness. The component is available in various configurations, with door diameters ranging from 600 to 1200 mm, and seal cross-sections from 10 to 20 mm. Operating pressure ranges from 1.0 to 1.6 MPa, with a sealing temperature range of -20 to 80°C. Seal hardness is typically 60-70 Shore A, and leakage rate is ≤1.3e-9 Pa·m³/s (helium leak test at 1.5 MPa). Door opening time is 5-15 seconds, and closing force is 500-2000 N. Materials include stainless steel (SS304/SS316) for the door frame and NBR/EPDM/FKM rubber for the seal. The component may include a tempered safety glass viewing window. IP rating is IP54-IP65, and weight ranges from 50-200 kg. These values are reference ranges and must be verified for the specific model and application. Standards such as ISO 7619-1, ISO 27895, ASTM D2000, ASTM A240, and IEC 60529 are referenced for testing and verification. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The door provides secure closure through mechanical locking mechanisms (latches, clamps, or bolts), while the seal (typically a gasket or O-ring) compresses against the door frame when closed, creating an airtight barrier. In vacuum operation, external atmospheric pressure further compresses the seal against the mating surfaces, enhancing the seal's effectiveness. The seal material and hardness are selected to conform to the mating surfaces, and the door closing force ensures proper compression. The door opening time is controlled by pneumatic actuation, and the leakage rate is verified by helium leak testing.

Common Materials

Stainless Steel (door frame), Food-grade Silicone or EPDM Rubber (seal), Tempered Safety Glass (viewing window if present)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Sealing Temperature Range	-20–80 °C	Exceeding range causes seal failure
Door Diameter	600–1200 mm	Custom sizes available on request
Seal Cross-Section	10–20 mm	Larger cross-section improves compression
Seal Hardness	60–70 Shore A	Softer for better conformabilityISO 7619-1
Leakage Rate	≤1.3e-9 Pa·m³/s	Helium leak test at 1.5 MPaISO 27895
Door Opening Time	5–15 s	Pneumatic actuation standard
Door Closing Force	500–2000 N	Ensures proper seal compression
Seal Material	NBR/EPDM/FKM	FKM for high temperatureASTM D2000
Door Material	SS304/SS316	SS316 for corrosive environmentsASTM A240
Weight	50–200 kg	Depends on size and material
IP Rating	IP54–IP65	Higher rating for washdownIEC 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 Panel Part
Primary structural component providing access closure

Material: Stainless Steel
Sealing Gasket Part
Elastic component that compresses to create airtight seal

Material: Food-grade Silicone Rubber
Locking Mechanism
Secures door in closed position under vacuum pressure

Material: Stainless Steel
Hinge Assembly
Allows door to swing open and closed

Material: Stainless Steel
Pneumatic Actuation
Opens and closes the door on the controlled cycle time.

Manufacturers of Door and Seal

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Frequently Asked Questions

What is the operating pressure range for the Door and Seal?

The operating pressure range is 1.0 to 1.6 MPa.; exceeding the range may cause seal failure. Verify the exact range for your model.

What materials are used for the door and seal?

The door is typically made of stainless steel (SS304 or SS316), and the seal is made of NBR, EPDM, or FKM rubber. Material selection depends on the application, such as temperature and chemical compatibility.

How is the leakage rate tested?

The leakage rate is tested using a helium leak test at 1.5 MPa, with a maximum allowable leakage rate of ≤1.3e-9 Pa·m³/s, according to ISO 27895. This ensures the seal maintains vacuum integrity.

What is the temperature range for the seal?

The sealing temperature range is -20 to 80°C. Exceeding this range can cause seal failure. For higher temperatures, FKM material may be used, but always confirm with the manufacturer.

Data Basis

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Preliminary Technical Classification

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pressure:	Full vacuum to 2 bar
other spec:	Slurry concentration up to 40% solids by weight
temperature:	-20°C to 150°C

Door and Seal

Product Specifications

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Reliability & Engineering Risk Analysis

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