Oil & Gas

The oil and gas industry places high demands on sealing products as they are subjected to extreme operating conditions including high temperatures, high pressures, corrosive media and harsh environments. Seals play a key role in the extraction, processing, transport and storage of oil and gas, ensuring the reliability and safety of the equipment.

Materials

Fluoroelastomer (FKM/Viton): excellent chemical resistance and high temperature resistance, suitable for chemical handling and high temperature environment in oil and gas.

Hydrogenated Nitrile Butadiene Rubber (HNBR): excellent heat, oil and abrasion resistance, suitable for harsh environments.

Polytetrafluoroethylene (PTFE): excellent chemical resistance, low coefficient of friction and non-adhesive, suitable for highly corrosive media.

Polyetheretherketone (PEEK): excellent chemical resistance, high temperature resistance and mechanical strength, suitable for high-end oil and gas equipment.

Metal seals: such as stainless steel, monel alloy, etc., with excellent pressure and corrosion resistance, suitable for high pressure and high temperature environment.

Seals types

O-Ring: used for static and dynamic sealing, suitable for various media and pressure conditions.

Gasket: used for flat sealing, such as flange connection, need chemical resistance and pressure resistance.

Seals: used for sealing of containers and equipment, such as storage tanks, pipelines, etc.

Diaphragms: used for sealing of pumps and valves, capable of isolating the medium from the external environment and preventing cross-contamination.

Bellows: used for sealing in high temperature and high pressure environment, such as gas pipeline and chemical transport.

Seals design

Corrosion-resistant design: seals need to be able to resist the corrosion of various chemicals, including acids, alkalis, solvents and so on.

Pressure-resistant design: seals need to be able to maintain sealing performance under high-pressure environments to prevent leakage.

Temperature-resistant design: seals need to be able to maintain stable performance in high or low temperature environments.

Wear-resistant design: seals need to have good wear resistance to adapt to high wear environment.

Seals manufacturing and processing

Precision machining: Seals need to be precision machined to ensure dimensional accuracy and surface finish to ensure sealing performance.

Surface treatment: The surface of seals may require special treatment, such as polishing, coating, etc., to improve corrosion resistance and wear resistance.

Cleaning and sterilisation: In some applications, seals require stringent cleaning and sterilisation processes to ensure sterility and contamination free.

Seals testing and validation

Chemical Resistance Test: Seals are tested for corrosion resistance in a simulated chemical environment.

Pressure Resistance Test: Test the pressure resistance of seals under simulated high pressure conditions.

Temperature resistance test: test the temperature resistance of seals under simulated high or low temperature conditions.

Abrasion test: test the abrasion resistance of seals under simulated abrasion conditions.

Examples of seals applications

Oil well extraction: use of high pressure and high temperature resistant metal seals, such as stainless steel O-rings and metal gaskets.

Oil refineries: use chemical resistant seals such as FKM O-rings and PTFE gaskets.

Natural gas processing: use low-temperature resistant seals such as HNBR O-rings and PEEK bellows.

Pipeline transport: use pressure- and corrosion-resistant seals such as metal bellows and metal gaskets.

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