Piston Seals
Piston seals, also known as piston rings, are used as fluid seal in hydraulic cylinders. A piston seals is located in the cylinder head and seal against the cylinder wall (bore). At Advanced Sealing Technology we offer a wide range of piston seals. Our seals provide protection against leakage and meet user requirements in terms of low friction, easy mounting and compact shape.
AST’s Piston Sealing
Mounted directly onto the piston head, piston seals interface with the inner cylinder bore to form a critical barrier inside the hydraulic and pneumatic systems. Their primary functions is to prevent fluid or air from bypassing the piston from one chamber to the other.
By maintaining a reliable seal across the sliding interface, a piston seal allows system pressure to build up efficiently on one side of the piston, driving the rod’s extension and retraction under load. Depending on the system design, these components operate as single-acting seals (withstanding pressure from one direction) or double-acting seals (maintaining pressure integrity from both directions durin reciprocating strokes).
SP1 Single Working Spring Activated Seal
Seals are particular exposed to pressure, friction and temperature. Our aim is to design and make...
SP2 Low-Friction Piston Seal
Seals are particular exposed to pressure, friction and temperature. Our aim is to design and make...
Standard Compounds
AST offers a wide range of high-quality materials for piston seals. Our selection includes PTFE, EPDM, NBR, silicone, and Polyurethane options. These materials are carefully chosen for their superior sealing properties and durability. Whether you need excellent temperature resistance, chemical resistance, or reliable sealing performance, our sealing materials are designed to meet your requirements.
PTFE's
AST’s PTFE compounds combine the exceptional properties of PTFE with specialized additives, resulting in materials that deliver unparalleled performance in the most demanding applications.
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PBF13 - Bronze filled
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PBF16 - High bronze filled
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PGF21 - Graphite filled
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PGF22 - Graphite and Carbon filled
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PTFE23 - Virgin PTFE
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PCF28 - Carbon filled
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PTF32 - Mineral filled
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PTF60 - Glass fiber filled
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PTE40 - Polyester filled
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PT114 - Carbon fiber graphite filled
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PTPM118 - Polyamide compounded
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PTMF219 - Mineral fiber and molybdenum disulfide filled
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F540 - Food approved polyester filled
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PT610 - Glass fiber and MoS2 filled
Polyurethanes
AST’s polyurethane compounds offer unmatched durability and flexibility, ensuring superior performance and longevity in high-pressure and high-wear environments.
VMQ
VMQ for piston seal O-rings provides outstanding flexibility and high-temperature stability, ensuring reliable sealing in extreme environments.
EPDM
EPDM for piston seal O-rings offers excellent resistance to heat, weathering, and ozone, making it ideal for long-lasting performance in diverse industrial applications.
NBR
NBR for piston seal O-rings delivers superior resistance to oils and fuels, offering exceptional durability and performance in demanding hydraulic systems.
FKM
FKM for piston seal O-rings excels in harsh chemical environments, providing unmatched resistance to heat, chemicals, and aggressive fluids for the most challenging applications.
Custom Piston Seal Solutions
When standard components fall short of your operational requirements, custom-engineered piston seals offer the exact geometry and material properties your system demands. Specialized working environments characterized by high pressures, aggressive chemicals, or non standard hardware dimensions, require custom sealing designs to guarantee long-term efficiency and reliability.
Our technical team works directly with you to design, prototype and manufacture custom profiles built for durability and problem solving. Contact our experts to learn how we can help with design and manufacture the ideal piston seal for your applications.
