河北启跃橡胶制品有限公司

Industries and scenarios where inflatable sealing rings are used

1. Food and pharmaceutical industry (sterilization cabinets, vacuum packaging machines, powder filling and sealing, sterile isolators, airtight doors for cleanrooms, etc.)
2. Vacuum/precision equipment industry (vacuum chambers, vacuum coating machines, vacuum welding chambers, negative pressure chambers, laboratory cleanroom doors, etc.)
3. Chemical industry/energy/metallurgy (pressure vessels, pipeline flanges, dust pipelines, high-temperature furnace doors, desulfurization and denitrification equipment, etc.)
4. Packaging/logistics/warehousing (refrigerated vehicles/cold storage doors, rear doors of trucks, containers, packaging machine airlocks, side seals of conveyor belts, etc.)
5. Aviation/Rail Transit/Special Equipment (aircraft cabin doors, train doors, explosion-proof doors, firefighting equipment, large hatch covers, etc.)
6. Other general industrial products (various large double-door, sliding door, flange port, and irregular-shaped cabinets; powder/particle/liquid conveying pipeline valves; noise isolation rooms, soundproof doors, water treatment equipment, etc.)

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Inflatable sealing ring type　 Custom-shaped custom-made items　 Oil sacs and air sacs type　

High-expansion inflatable sealing ring

Outer diameter expansion: The outer diameter expansion type inflatable sealing ring. When the cavity is inflated and pressurized, the outer ring expands and expands outward, increasing the outer diameter and fitting tightly against the inner wall of the cavity groove, thereby achieving a sealing and isolation effect. In the non-inflated normal state, the rubber ring shrinks in size and has a smaller outer diameter, making installation and disassembly simple and convenient; after introducing air pressure, the entire ring expands outward, filling the gaps in the equipment, and fully adheres to the sealing surface. It can automatically compensate for the deviation of equipment gaps, ensuring uniform and stable sealing performance, and is suitable for use in warehouse doors, flanges, box body slots, and pipe outer walls. After deflation, it automatically retracts, reducing friction loss, and can be repeatedly used. It has good aging resistance and pressure resistance. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and the entire process does not require customizing a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; orders can be produced immediately, and the delivery cycle is faster. We can produce products of any large diameter, unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch, multi-model orders can be flexibly produced, and the product versatility is stronger.

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Platinum silicone rubber inflatable sealing ring

Outer diameter expansion: The outer diameter expansion type inflatable sealing ring. When the cavity is inflated and pressurized, the outer ring expands and expands outward, increasing the outer diameter and fitting tightly against the inner wall of the cavity groove, thereby achieving a sealing and isolation effect. In the non-inflated state, the rubber ring shrinks in size and has a smaller outer diameter, making installation and disassembly simple and convenient; after introducing air pressure, the entire ring expands outward, filling the gaps of the equipment and fully adhering to the sealing surface. It can automatically compensate for the deviation of equipment gaps, ensuring uniform and stable sealing performance, and is suitable for use in warehouse doors, flanges, box body slots, and pipe outer walls. After deflation, it automatically retracts, reducing friction loss, and can be repeatedly used. It has good aging resistance and pressure resistance. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and the entire process does not require customizing a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; once an order is received, production can be started immediately, and the delivery cycle is faster. We can produce products of any large diameter, unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch and multi-model orders can be flexibly produced, and the product versatility is stronger.

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Nitrile gas-tight sealing ring

Outer diameter expansion: The outer diameter expansion type inflatable sealing ring. When the cavity is inflated and pressurized, the outer ring expands and expands outward, causing the outer diameter to increase and fitting tightly against the inner wall of the cavity groove, thereby achieving a sealing and isolation effect. In the non-inflated state, the rubber ring shrinks in size and has a smaller outer diameter, making installation and disassembly simple and convenient; after introducing air pressure, the entire ring expands outward, filling the gaps in the equipment and fully adhering to the sealing surface. It can automatically compensate for the deviation of equipment gaps, ensuring uniform and stable sealing performance, and is suitable for use in warehouse doors, flanges, box body slots, and pipe outer walls. After deflation, it automatically retracts, reducing friction loss, and can be repeatedly used. It has good aging resistance and pressure resistance. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and the entire process does not require customizing a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; once an order is received, production can begin immediately, and the delivery cycle is faster. We can produce products of any large diameter, unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch, multi-model orders can be flexibly produced, and the product versatility is stronger.

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Wear-resistant inflatable sealing ring

Outer diameter expansion: The outer diameter expansion type inflatable sealing ring. When the cavity is inflated and pressurized, the outer ring expands and expands outward, causing the outer diameter to increase and tightly adhere to the inner wall of the cavity groove, thereby achieving a sealing and isolation effect. In the non-inflated normal state, the rubber ring shrinks in size and has a smaller outer diameter, making installation and disassembly simple and convenient; after introducing air pressure, the entire ring expands outward, filling the gaps of the equipment, and fully adheres to the sealing surface. It can automatically compensate for the deviation of equipment gaps, ensuring uniform and stable sealing performance, and is suitable for use in warehouse doors, flanges, box body grooves, and pipe outer walls. After deflation, it automatically retracts, reducing friction loss, and can be repeatedly used. It has good aging resistance and pressure resistance. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and the entire process does not require customizing a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; once an order is received, production can be started immediately, and the delivery cycle is faster. We can produce products of any large diameter, unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch and multiple model orders can be flexibly produced, and the product versatility is stronger.

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Outer diameter expansion inflatable sealing ring

Outer diameter expansion: The outer diameter expansion type inflatable sealing ring. When the cavity is inflated and pressurized, the outer ring expands and expands outward, causing the outer diameter to increase and fitting tightly against the inner wall of the cavity groove, thereby achieving a sealing and isolation effect. In the non-inflated normal state, the rubber ring shrinks in size and has a smaller outer diameter, making installation and disassembly simple and convenient; after introducing air pressure, the entire ring expands outward, filling the gaps in the equipment and fully adhering to the sealing surface. It can automatically compensate for the deviation of equipment gaps, ensuring uniform and stable sealing performance, and is suitable for use in warehouse doors, flanges, box body slots, and pipe outer walls. After deflation, it automatically retracts, reducing friction loss, and can be repeatedly used. It has good aging resistance and pressure resistance. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and the entire process does not require customizing a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; once an order is received, production can be started immediately, and the delivery cycle is faster. We can produce products of any large diameter, unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch, multi-model orders can be flexibly produced, and the product versatility is stronger.

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Inner diameter expansion inflatable sealing ring

Inner diameter expansion: The inner diameter of the inflatable sealing ring expands when inflated, meaning that after being inflated, the ring expands radially inward, reducing its inner diameter and tightening its grip on the shaft/core body to achieve an inner peripheral seal; after deflation, it rebounds, restoring its inner diameter and loosening its grip, suitable for dynamic/frequent opening and closing scenarios. Principle: Natural state: Loosely embedded in the groove, with a larger inner diameter and no contact with the shaft surface. Inflation: Internal pressure is applied, causing radial expansion inward, resulting in a reduction in inner diameter, and the inner peripheral surface tightly gripping the shaft/core body, forming a uniform sealing band. Deflation: Pressure is released, and the ring elastically rebounds, restoring its inner diameter and detaching from the shaft surface, without frictional resistance. Our advantages: We can adopt our own developed formula for segmented vulcanization process, and throughout the process, there is no need to customize a complete set of molding molds, significantly reducing production costs. There is no need to wait for the mold processing cycle; once an order is received, production can begin immediately, resulting in a faster delivery cycle. We can produce products of any large diameter and unconventional non-standard specifications at will, with specifications not limited by molds. Small batch, multi-model orders can be flexibly produced, and the product versatility is stronger.

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End face expansion pneumatic sealing ring

End face expansion: The end face expansion type inflatable sealing ring relies on internal inflation pressure to cause the entire axial end face to bulge and expand, extending and squeezing towards the direction of close contact with the plane. When the product is not inflated, its shape is flat, leaving a reserved installation gap, and the installation is simple without friction; after introducing air pressure, the end face of the rubber ring bulges and deforms as a whole, tightly pressing against the对接 end face， filling the uneven positions of the gaps， and forming an overall end face seal. After releasing the pressure and deflating， the rubber ring automatically retracts and recovers， completely separating the sealing contact surface， and reducing the opening and closing resistance of the switch. Our advantages： We can adopt our own developed formula for segmented vulcanization process， and the entire process does not require customizing a complete set of molding molds， significantly reducing production costs. There is no need to wait for the mold processing cycle， and orders can be produced immediately， with a faster delivery cycle. We can produce products of large diameters and unconventional non-standard specifications at will， and the specifications are not limited by molds. Small batch and multi-model orders can be flexibly produced， and the product versatility is stronger.

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One-piece molded inflatable sealing ring

Integral molded inflatable sealing ring: The integral molded inflatable sealing ring is a hollow elastic sealing component made through an integral vulcanization process. It comes with its own inflation and deflation ports, has no seams, is highly durable, and has excellent air tightness. In its normal state, it contracts and fits into the groove; after inflation, it expands uniformly and adheres to the sealing surface; after deflation, it automatically retracts to achieve dynamic sealing and unlocking. Advantages: The wall thickness is uniform, the hardness is consistent, the inflation and deflation expansion and contraction ratio is uniform, and the deformation is stable. The overall structure is complete, the toughness is uniform, the compressive strength is stronger, and the service life is longer. It can be made of various materials to meet different working conditions, such as: nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), fluorocarbon (FKM), silicone, etc.

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Inflatable sealing strip

The inflatable sealing strip is a long, linear type of sealing rubber strip. It has a slender and soft shape, and its structure is hollow and can be inflated. It has excellent elasticity and can be selected in length according to the requirements. After inflation, the entire strip expands to fit the gap between the door and the frame, providing a tight seal. When deflated and contracted, it reduces the wear on the strip and avoids jamming during opening and closing. It is suitable for straight and irregularly shaped narrow gaps and can automatically compensate for assembly deviations and gaps caused by component deformation. It has advantages such as wear resistance, aging resistance, and low opening and closing resistance. The material options include EPDM, silicone, nitrile, and fluororubber, and it is widely used in industrial doors, ovens, clean rooms, dust removal equipment, special shelters, test chambers, and other scenarios. It has the strongest versatility, flexible installation, and a wide range of styles and specifications. Our advantages: We can adopt our self-developed formula for segmented vulcanization process, and there is no need to customize a complete set of molding molds throughout the process, significantly reducing production costs. There is no need to wait for the mold processing cycle, and production can be started upon receiving an order, resulting in a faster delivery cycle. We can produce products of large diameters and unconventional non-standard specifications at will, and the specifications are not limited by molds. Small batch and multi-model orders can be flexibly produced, and the product versatility is stronger.

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Inflatable sealing frame

In addition to various inflatable sealing components, our company also specializes in the production of rubber oil tanks, buffer air tanks, compression air tanks, pressure-bearing leather tanks and other series of rubber-plastic products. These products are made by integrating high-quality rubber materials through one-step vulcanization, and they have sufficient overall toughness, excellent sealing performance, strong pressure resistance, and are not prone to damage or cracking. Rubber oil tanks are mainly used for oil storage, water storage, hydraulic buffering, and cavity liquid storage compensation. They have high flexibility, are resistant to oil erosion, corrosion and aging, and have stable expansion and rebound performance. Rubber oil tanks, air tanks and air tires are all flexible pressure-bearing components made of rubber and fibers, with good elasticity and strong sealing performance. Rubber oil tanks are resistant to oil and corrosion, and are often used for oil storage and hydraulic compensation; air tanks can be inflated and deflated, and are commonly used in engineering pouring and pipeline sealing; air tires serve as elastic supporting elements, reducing vibration and noise, and are suitable for equipment and vehicle suspension. They are lightweight, durable, easy to install, and are commonly used core rubber components in the industrial and engineering fields.

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Special-shaped customized airbag

Special-shaped customized airbag: The special-shaped inflatable sealing ring belongs to non-standard customized sealing products, different from the conventional circular and square standard rubber rings. It is specially processed and customized for various irregular holes, special-shaped cabins, and special equipment structures, without being limited by fixed specifications. Standard sealing parts cannot match the complex concave-convex structures, special arcs, and irregular corners of equipment. The special-shaped inflatable sealing parts can perfectly solve the problem of installation restrictions. The entire product is formed through one-piece vulcanization, without any joint gaps, and has better overall air tightness, without the phenomenon of air leakage or water seepage at the joint.

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Silicone flexible connection

Silicone soft connectors are flexible connection components for pipelines, featuring excellent flexibility, soft texture and good sealing performance. Sterile liquid transportation: High-purity liquid/buffer solution/injection water connections between fermentation tanks, mixing tanks, purification systems, and filling lines. Powder/particle transportation: Dust-free and sterile transportation of drug powder/particles between raw material storage, mixers, and tablet presses. Equipment flexible connection: Vibration reduction + sealing + displacement compensation at the inlet and outlet of centrifuges, dryers, and reactors. Clean ventilation/ventilation: Sealed transportation of sterile gas/tail gas in sterile workshops, biosafety cabinets, and fermentation tanks. Sterilization adapter pipelines: Flexible connection for steam sterilization and circulating pipelines. ✅ High-purity cleanliness: Platinum sulfidation, no precipitation, no residue, and no contamination of drugs. ✅ Temperature-resistant sterilization: -60℃ to +200℃, withstands 121℃ high-pressure steam sterilization. ✅ Flexible and easy to install: High elasticity, flexible and bendable, suitable for complex clean workshop layouts. ✅ Transparent visibility: Semi-transparent material, allowing visual monitoring of medium flow and no dead corners.

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