Inflatable Gasket for Clean Room

The Bombay Rubber & Carbon Worksproduct page specifies 60 Shore A silicone, compound number WS/2017/F17/M, and identifies transparent platinum silicone as the material for this cleanroom application.

Exact pressure, temperature and dimensional limits should be established for the final profile and operating conditions.

Recommended for: Cleanroom, pharmaceutical and medical environments where purity and temperature resistance are important.

Platinum-cured silicone offers high purity, excellent flexibility and good elastic recovery, making it a versatile choice for high-containment sealing applications.

Pharmaceutical Industry

Inflatable cleanroom gaskets are widely used where pharmaceutical processes require controlled environments and reliable containment.
Applications include:
• Pharmaceutical cleanrooms
• Processing chambers
• Equipment doors
• Fluid Bed Dryers
• Fluid Bed Processors
• Tablet coating equipment
• Transfer chambers
• Containment equipment
Bombay Rubber & Carbon Worksidentifies cleanroom doors and pharmaceutical equipment among its inflatable-seal applications.


Medical & Healthcare

Cleanroom inflatable gaskets can be used in controlled medical environments where contamination control and reliable sealing are important.
Applications include:
• Medical cleanrooms
• Sterile processing areas
• Medical equipment
• Controlled chambers
• Isolation systems
• Laboratory equipment
Bio-Hazard Laboratories
High-containment laboratories require reliable sealing to control the movement of air and potentially hazardous materials.
Inflatable gaskets can provide an active sealing interface around:
• Laboratory doors
• Containment chambers
• Access hatches
• Equipment enclosures
• Decontamination chambers
Bombay Rubber & Carbon Worksspecifically lists bio-hazard laboratories as an application for this cleanroom inflatable gasket.

Biotechnology
Biotechnology manufacturing and laboratory environments can require controlled atmospheric conditions and contamination prevention.
Applications include:
• Bioprocessing equipment
• Laboratory isolators
• Containment chambers
• Transfer systems
• Controlled processing equipment

Cleanroom Doors
Rectangular inflatable seals are commonly used for cleanroom door applications where an airtight barrier is required.
The inflatable mechanism allows:
Door Open → Seal Deflated → Door Closed → Seal Inflated → Airtight Barrier
Cleanroom door systems with inflatable seals are used where high sealing performance and controlled access are required.
Isolators & Glove Boxes
Inflatable silicone seals are suitable for specialized isolator and glove-box systems where controlled environments must be maintained.
Applications include:
• Pharmaceutical isolators
• Glove boxes
• Containment systems
• Transfer hatches
• Laboratory isolators
• High-containment processing equipment
Specialized silicone inflatable seals are widely used in pharmaceutical isolators and glove-port applications.

Semiconductor & Electronics
Clean manufacturing environments in semiconductor and electronics production require stringent contamination control.
Inflatable seals can be incorporated into:
• Process equipment
• Load-lock systems
• Fabrication equipment
• Etching equipment
• Deposition systems
• Controlled equipment doors
Bombay Rubber & Carbon Worksidentifies semiconductor equipment and cleanroom-packed inflatable seals among its specialized applications.



Applications in Pharmaceutical Equipment

Inflatable cleanroom gaskets can be used in:
Fluid Bed Dryers
for sealing product containers, access doors and process interfaces
Fluid Bed Processors
for maintaining reliable sealing around processing chambers
Tablet Coaters
for controlled sealing around processing and inspection areas
Isolators
for maintaining containment and controlled atmospheric conditions
Sterilizers & Autoclaves
for reliable door sealing during sterilization cycles
Freeze Dryers / Lyophilizers
for sealing chambers where controlled pressure and contamination prevention are important
Specialist silicone inflatable gasket suppliers list these types of equipment among pharmaceutical and cleanroom applications.

Advantages Over Conventional Gaskets

Active Sealing
The gasket is inflated only when sealing is required.
Low Closing Force
Because the seal retracts when deflated, the equipment door does not need to compress the gasket continuously during opening and closing.
Variable Gap Compensation
Inflation allows the gasket to expand and accommodate certain variations in the sealing gap.
Better Containment
The expanded profile can create a continuous sealing barrier around the entire door or hatch.
Easy Maintenance
The inflatable design allows the seal to be replaced and inspected without requiring excessive mechanical compression during normal operation.
Custom Profile Development
Profiles can be engineered according to the exact groove, door geometry, sealing gap and inflation direction.

How It Works

1. Seal Installation
The inflatable gasket is installed into a specially designed groove or retaining channel around the cleanroom door, hatch or equipment enclosure.
2. Door / Hatch Closure
The door or equipment cover moves into its closed position.
3. Controlled Inflation
Compressed air is introduced through the gasket's inflation connection.
4. Seal Expansion
The hollow silicone profile expands and presses against the mating surface.
5. Airtight Containment
The expanded gasket creates a continuous sealing barrier that helps prevent air leakage and the ingress or escape of dust and contaminants.
6. Deflation
When access is required, the inflation pressure is released. The gasket retracts, reducing interference and allowing the door or hatch to open smoothly.



This operating principle is particularly useful where doors or equipment need to be opened and closed repeatedly while maintaining reliable containment during processing.

Cleanroom Design Considerations

When selecting an inflatable gasket for a cleanroom application, consider:
• Cleanroom classification
• Required leakage rate
• Door or hatch dimensions
• Groove dimensions
• Minimum and maximum sealing gap
• Required expansion
• Inflation pressure
• Operating temperature
• Cleaning chemicals
• Sterilization process
• Autoclave requirements
• Number of operating cycles
• Surface finish
• Material compatibility
• FDA / USP requirements
• Required certificates
• Inflation valve location
• Installation and maintenance requirements
The inflatable-seal design should be validated as part of the complete cleanroom door or equipment system rather than evaluated only as an individual gasket.



Custom Manufacturing

Every cleanroom door, chamber and equipment interface has different dimensional requirements.
Custom inflatable gaskets can be developed based on:
• Engineering drawing
• Existing gasket sample
• Door / hatch dimensions
• Groove drawing
• Cross-section requirement
• Sealing gap
• Inflation direction
• Inflation pressure
• Temperature
• Cleaning process
• Sterilization process
• Chemical exposure
• Required certifications
Bombay Rubber & Carbon Worksoffers custom inflatable-seal design and development and maintains a large range of standard profiles for specialized applications.



Quality & Certification

Depending on the selected compound and application, documentation can include:
• FDA compliance
• European food-contact conformity
• USP Class VI
• TSE/BSE-free certificate
• Phthalate-free certificate
• Material test report
• Laboratory test certificate
• Certificate of Conformity
• Dimensional inspection report
Bombay Rubber & Carbon Worksstates that its cleanroom inflatable gasket uses transparent platinum silicone and is designed for FDA and European certification requirements.



Engineered for Clean, Controlled Environments

Inflatable Gasket for Clean Room — High-purity, airtight and reliable pneumatic sealing for pharmaceutical, medical, biotechnology and high-containment applications.
Airtight Sealing | Platinum Silicone | Cleanroom Applications | High Containment | Custom Profiles | FDA / European Certification Options