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O-Ringe sind vielseitige Dichtungen, die in einer breiten Palette von hydraulischen und pneumatischen Systemen verwendet werden. Sie passen in Nuten und werden während der Montage komprimiert, um eine dichte Abdichtung zu bilden. Hergestellt aus Materialien wie NBR, FKM, EPDM und Silikon bieten O-Ringe ausgezeichnete Beständigkeit gegen Druck, Temperatur und Chemikalien. Diese Dichtungen werden häufig in Ventilen, Pumpen, Zylindern, Verbindungsstücken und Flanschen in Branchen wie Automobilindustrie, Maschinenbau und Fluidsteuerung eingesetzt. Die richtige Materialauswahl gewährleistet langfristige Abdichtungsleistung und Leckageprävention.

Stangendichtungen verhindern das Austreten von Hydraulikflüssigkeit entlang der Kolbenstange und halten den Systemdruck aufrecht. Hergestellt aus NBR-, HNBR- oder PU-Materialien, widerstehen sie Verschleiß, Druck und Hydraulikflüssigkeiten. Sie werden häufig in Baumaschinen und Industrieanlagen eingesetzt, reduzieren Reibung und schützen interne Komponenten, wodurch die Systemzuverlässigkeit und Lebensdauer verbessert werden.

Kolbendichtungen verhindern Flüssigkeitsleckagen zwischen Kammern in Hydraulik- und Pneumatikzylindern und erhalten Druck und Systemleistung aufrecht. Hergestellt aus langlebigen Materialien wie NBR, HNBR und PTFE, widerstehen sie Verschleiß, Hitze und Druck. Häufig verwendet in Baumaschinen, Industriehydraulik und Fertigungssystemen für zuverlässigen Betrieb.

Rod and piston seals are used together in hydraulic cylinders to control fluid flow and seal both the rod and piston areas. These seals help maintain pressure in double-acting cylinders and reduce internal and external leakage. Rod and piston seals are typically made from NBR, PU, HNBR, or PTFE, offering excellent wear and pressure resistance. They are widely applied in construction machinery, mobile hydraulics, and industrial equipment. Choosing the right rod and piston seals ensures stable performance and reduces system failures.

Rotary seals are designed to seal components with rotational movement, such as shafts in motors and pumps. They prevent leakage of fluids and block entry of dust or debris. Rotary seals are typically made from materials like NBR, FKM, and PTFE for excellent wear and temperature resistance. These seals are used in hydraulic motors, gearboxes, machine tools, and other rotary equipment. Quality rotary seals improve sealing efficiency, reduce downtime, and extend system life.

Wiper seals are installed at the cylinder head to remove contaminants from the piston rod during retraction. They help prevent dirt, water, and debris from entering the system. This reduces seal wear and protects internal components. Wiper seals are made from materials like polyurethane (PU), NBR, or PTFE, offering excellent durability and flexibility. They are widely used in construction equipment, mobile hydraulics, and industrial machinery. High-quality wiper seals improve system reliability and reduce maintenance needs.

Wear rings are non-metallic guide elements used in hydraulic and pneumatic cylinders. They keep the piston or rod aligned, reducing side loads on seals. Made from materials like phenolic resin, polyester, or PTFE composites, wear rings resist abrasion, high pressure, and temperature. They are used in construction machinery, presses, injection molding machines, and other heavy-duty systems. By preventing metal-to-metal contact, they extend the life of both seals and cylinder components.

Back up rings are used alongside O-rings and other soft seals to prevent extrusion in high-pressure sealing environments. Placed in the groove behind the primary seal, they provide additional support and help maintain sealing integrity under pressure. Commonly made from PTFE or other rigid materials, back up rings improve performance in demanding hydraulic and pneumatic systems. They are widely used in valves, cylinders, pumps, and heavy-duty equipment where pressure spikes or large gaps are present.

Guide elements are used to guide and support the piston and rod inside hydraulic cylinders. They maintain alignment and reduce side forces during movement. This protects seals and prevents metal-to-metal contact. Guide elements are made from PTFE, thermoplastics, or composite materials for low friction and high strength. They are widely used in hydraulic presses, mobile equipment, and industrial automation. Reliable guide elements improve system stability and extend component life.

Spring energized rod seals combine a polymer sealing element with an internal metal spring to provide constant force against the rod surface. This ensures reliable sealing in dynamic applications, especially where pressure, temperature, or media conditions vary. Made from materials like PTFE, PEEK, or other engineered plastics, spring energized rod seals are used in aerospace, chemical processing, cryogenic systems, and high-pressure hydraulics. They offer excellent resistance to wear, extrusion, and chemical attack while maintaining low friction.

Spring energized piston seals feature a polymer sealing jacket and an internal spring that applies continuous pressure to maintain contact with the cylinder bore. This ensures tight, low-friction sealing in dynamic conditions. Commonly made from PTFE, PEEK, or other high-performance materials, spring energized piston seals resist wear, chemicals, and extreme temperatures. They are used in aerospace systems, cryogenic equipment, chemical processing, and high-pressure hydraulic cylinders, delivering long-term sealing reliability in demanding environments.

Spring energized rotary seals use a metal spring to keep sealing pressure against rotating shafts. They provide consistent sealing even with speed, pressure, or thermal changes. Made from materials like PTFE or PEEK, spring energized rotary seals resist wear, heat, and chemicals. They are used in pumps, compressors, mixers, and rotary joints across industries like aerospace, oil & gas, and chemical processing. These seals offer low friction and long service life in demanding environments.

Spring energized inside face seals apply spring force to press the sealing lip against an internal face. This design ensures axial sealing under pressure or vacuum. Made from materials like PTFE or PEEK, spring energized inside face seals resist chemicals, wear, and temperature changes. They are used in valves, static joints, and low-speed rotary systems, especially in aerospace, chemical, and cryogenic applications. These seals offer reliable, low-leakage performance in tight installation spaces.

Spring energized outside face seals use a spring-loaded sealing lip to press outward against a housing face. This ensures tight axial sealing under pressure or vacuum. Made from PTFE, PEEK, or other high-performance materials, spring energized outside face seals resist chemicals, wear, and extreme temperatures. They are used in static joints, valve bodies, and flanged connections in aerospace, chemical, and industrial systems. These seals offer long-lasting performance in tight or critical sealing areas.

Downhole and intervention tools seals are designed to withstand high pressure, high temperature, and aggressive well fluids. These seals are made from advanced materials such as FKM, HNBR, AFLAS, and PEEK, offering resistance to sour gas, thermal cycling, and mechanical stress. Downhole and intervention tools seals are used in packers, plugs, logging tools, and coiled tubing systems. They provide long-term sealing performance in drilling, completion, and workover operations, where failure is not an option.

API 6A wellhead equipment seals are engineered for use in high-pressure, high-temperature (HPHT) wellhead systems. They comply with API 6A specifications for safety, performance, and material standards. These seals are made from durable elastomers or high-performance polymers like FKM, HNBR, or PEEK. API 6A wellhead equipment seals are used in components such as casing heads, tubing hangers, and valve bodies. They ensure reliable sealing under extreme pressure and corrosive downhole conditions, critical for safe oil and gas production.

LNG seals are engineered for cryogenic temperatures, often below -160°C, where standard materials fail. These seals are made from PTFE, modified PCTFE, or elastomers specially formulated for low-temperature flexibility and chemical resistance. LNG seals are used in pumps, valves, loading arms, and transfer systems within LNG storage, transport, and processing. They ensure long-term sealing reliability in liquefied natural gas operations, preventing leakage and maintaining system integrity under thermal shock and pressure variations.

At XHH Seals, we provide advanced sealing solutions engineered for the extreme demands of the LNG (Liquefied Natural Gas) industry. Our seals deliver reliable, leak-free performance in cryogenic environments, even under severe temperature swings and high-pressure conditions.

Whether used in LNG fueling nozzles, storage tanks, transfer pipelines, pumps, or valves, our products are built to withstand intense thermal cycling, chemical exposure, and mechanical stress. We offer a comprehensive range of materials — including PTFE, PCTFE, PEEK, and cryogenic-grade elastomers — to meet the strict standards of LNG applications.

With a strong focus on safety, durability, and precision, XHH Seals empowers our partners to achieve greater efficiency, reliability, and operational excellence across the entire LNG supply chain.

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