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Inflatable Seals

Fabric reinforced seals for 100% gas tight sealing


Inflatable Seals

Inflatable seals are rubber seals which inflate (rather than compress) to offer contamination proof sealing in a wide range of applications. When compared to regular elastomeric seals, inflatable seals work effectively in irregular or misaligned surfaces, which enhances their sealing integrity. They are specifically designed to inflate, which ultimately helps to form a tight barrier between the mounting and striking surface. Inflatable seals are simpler to use as they demand less force while guaranteeing 100% sealing. It is the ideal fix for your unique sealing applications.


Products Benefits

Asia’s largest and fastest manufacturer of inflatable seals

Inflatable seals with 6 month warranty certification

Design guidance for customized seals


Non-Reinforced Inflatable Seals

Non-reinforced inflatable seals are made only from elastomers & are mostly extruded constructions; however, they can be molded to meet specific dimensional parameters.They are the preferred option for regular sealing applications as they are relatively affordable and do not compromise on quality and performance

Fabric Reinforced Inflatable Seals

Molded fabric reinforced inflatable seals are recommended in applications involving extreme pressure/temperature conditions or in rugged environments. The molding process eliminates joints and the fabric reinforcement adds to the seal’s overall strength and resilience. Depending upon the application, one of the following fabrics is chosen


Axially expanding Inflatable Seals have the centerline diameter as the fixed dimension. The Inflatable Seal expands in the perpendicular direction with respect to the diameter. These seals are sometimes also referred to as face seals.


Seals expanding radially outward have the Air Inlet Valves(AIV) typically installed into a channel with the inside diameter (ID) as the fixed dimension.


Inflatable seals with small outside diameters may end up wrinkling with this kind of expansion. Seals expanding radially inward have Air Inlet Valves(AIV) typically installed into a channel with the outside diameter (OD).


Circular seals are mostly preferred for sealing manhole covers, hopper seals or in industrial machinery like fluidized bed dryers & autoclaves; wherein the machines are made in circular dimensions.


Rectangular seals are very commonly used for sealing applications like doors for clean rooms, nuclear facilites, satellite testing facilities, etc.


Inflatable seals with straight configurations are most commonly found in clamps and actuators. Straight seals have vulcanized ends that do not expand. Western Rubbers’ also provides retention mechanisms for straight seals.

U shaped

U shaped seals are a common configuration in inflatable gate seals. Ends of u-shaped seals are vulcanized & hence cannot inflate. Appropriate retention mechanisms for this configuration is available at Western Rubbers.

standard Dimensions

Inflatable Seals Profile

our use cases


Waterproof door sealing of marine hatches

Ask Me

Frequently Asked Questions

01. What are the types of inflatable seals?

Inflating Radially Inward Seals:
Seals that inflate in the direction of the radius i.e. towards the center

Inflating Radially Outward Seals:
Seals that inflate in the direction of the circumference i.e. away from the center

Inflating Face Seals:
Seals that inflate perpendicular to the seating surface.

Generally, for nominal pressure applications we suggest customers to avoid fabric reinforced seals so as to avoid high costs. But if your design pressure requirements are higher than 7-8 Bar then we suggest customers to go for fabric reinforced seals for longer life and effective functionality.

We use Kevlar, Nylon, Nomex, Polypropylene and Dacron.

We can manufacture both kinds of inflatable seals; ones which require continuous air supply or
those seals which can work with a one-time fill, like a tire tube.

We can manufacture inflatable seals that can withstand temperatures up to 250 degrees (use symbol) Celsius (480 degrees F).

Western Rubbers can manufacture seals that can withstand pressures up to 30 Bar.

EPDM, Viton, Neoprene, Silicone, Nitrile and Natural rubber can be used for manufacturing
inflatable seals.

For longer life of the inflatable seal, the inflation gap between the striking surface of the seal and the mating surface should be between 5-8 mm.

Yes, we assist clients right from the designing stage to the testing and installation stage of the inflatable seal.

Yes, we manufacture FDA compliant inflatable seals. Our seals pass the stringent tests of US FDA and EU pharmacopoeia. We also provide all major food and pharmaceutical grade certifications on request.

We provide Mullen burst test report, underwater leak test report, compound report and
cycle test report (on request).

Related Downloadables

Company Brochure
Company Brochure
Rubber Extrusions Catalogue
Rubber Extrusions Catalogue
Diaphragm Catalogue
Diaphragm Catalogue
Inflatable Seals Catalogue
Inflatable Seals Catalogue
Tubes and Hoses Catalogue
Food / Pharma Tubings & Hoses
Rail & Mass Transit Catalogue
Rail & Mass Transit

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