Hollow Orings

Hollow orings are an alternative to standard o-rings, when low closing force is required

Hollow Orings

Hollow orings are an alternative to standard o-rings, when low closing force is required.

The reduced closing force is achieved by replacing the solid cross-section by a hollow cross-section, without reducing the material hardness. Hollow o-rings are used for instance for sealing lids and doors.

Suitable for-

Low pressure static applications.
Applications where low closing force is required.
Applications with rough surface finish.
Not suitable for

High pressure applications-
Dynamic applications.

How do hollow o-rings work?
Hollow o-rings work the same as regular o-rings. An o-ring is an elastic part placed between two parts and then squeezed to fill up the gap between the two parts. When placed under pressure, the ring is forced to “flow” within the groove toward the clearance gap. As the ring flows against the gap, it produces zero clearance and prevents the sealed substance from escaping. The difference between a regular o-ring and a hollow ring is the fact that the hollow core makes it much more easy to compress the ring.


leading manufacturers of fabric inflatable seal

Today western polyrub stand out as leading manufacturers of fabric inflatable seal who make seals with hand built and fully moulded with fabric reinforcement inside make seal so tough that can withstand pressure up to 50 Kgcm2 Fabric Reinforced Rubber Seals Are Effective Where Moderate- To High-pressure Is Applied(we make seal up to 50bar bursting pressure ) , Such As In Heavy Industrial, Environmental, Technical And Laboratory Environments,marine,nuclear Region A Variety Of Reinforcing Fabrics Are Available And Determined By Factors Such As Temperature And Pressure.


Fabric inflatable seal moulded

Wespo also provide fabric inflatable seal moulded with rubber nozzle for flexibility and longer life if clients demand Western Polyrub Offers Technical Guidance To Determine The Appropriate Design, Manufacturing And Material Composition. The Fabric Inflatable Must Withstand Environmental Factors And Perform Using Air Or Gas Controlled Mechanisms Under Pressure. The Environment And Structure Will Affect The Choice



Western polyrub has developed technology to used fabric reinforced inflatable seal in a number of critical applications including offshore production, storage and offloading (FPSO); anchoring drill rigs to the seabed; gas loading systems; pipeline welding; and watertight doors and panel High -pressure inflatable seals are designed to fit in metal retaining grooves, allowing axial, external radial and internal radial expansion, These seals typically can withstand pressures of up to 8 bar, and are suitable for sealing clearances from 2-10mm.

Advantages of Hollow Orings
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