Product Description:
Parker 2-series O-rings are precisely molded elastomeric seals that conform to the AS568A dimensional standards. This series includes dash numbers ranging from 2-102 to 2-178, all sharing a consistent cross-section of 2.62 mm (0.103"). The inside diameters span from as small as 1.24 mm (2-102) up to 247.32 mm (2-178), accommodating a wide variety of gland sizes, from tiny instrumentation components to large-scale industrial housings.
These O-rings are offered in three main elastomer families, each designed to suit different fluid and temperature conditions. The NBR (Nitrile) variant is ideal for general-purpose applications involving petroleum and hydraulic fluids. The FKM (Fluoroelastomer) type is engineered to withstand aggressive chemicals and higher temperature environments. Lastly, the VMQ (Silicone) material is suited for extreme temperature fluctuations and high-purity applications.
Each elastomer compound ensures dependable resistance to compression set and maintains sealing integrity across both static and dynamic gland configurations. This makes Parker 2-series O-rings a versatile choice for a broad range of sealing needs in various industrial sectors.
Features:
The AS568A standard ensures dimensional compliance by molding seals to precise dash-number tolerances, allowing for seamless drop-in interchangeability. This standardization guarantees that components fit accurately without the need for custom adjustments.
All seals in the series ranging from 2-102 to 2-178 feature a uniform cross-section measuring 2.62 mm with a tolerance of ±0.08 mm. This consistent dimension across the entire series simplifies the design of gland components and facilitates efficient spare-parts management.
The material options available include NBR, or Nitrile, which serves as a general-purpose compound. NBR provides excellent resistance against petroleum oils, fuels, and hydraulic fluids, operating effectively within a temperature range from approximately -34°C to +121°C (-30°F to +250°F).
For applications requiring enhanced chemical resistance, FKM (Fluoroelastomer) compounds offer high durability against aggressive chemicals, acids, and fuels. These compounds typically function within a service temperature range of about -26°C to +204°C (-15°F to +400°F), with specialized low-temperature variants extending usability down to -46°C.
Silicone-based VMQ materials provide exceptional flexibility in extreme temperature conditions. Their wide operational window spans approximately -54°C to +232°C (-65°F to +450°F), making them ideal for high-purity environments and medical applications where temperature resilience is critical.
Precision molded compounds are available in standard Parker formulations such as N0674-70, V0747-75, and S0604-70. These ensure consistent mechanical properties, including hardness and compression set, for reliable performance.
Covering a broad size range, the series includes 77 dash numbers from 2-102 to 2-178, accommodating inner diameters from as small as 1.24 mm up to 247.32 mm, providing a comprehensive solution for diverse sealing requirements.
Technical Parameters:
| Cross-Section (inch) |
0.103 |
| Inside Diameter (mm) |
1.24 To 247.32 |
| Inside Diameter (inch) |
0.049 To 9.737 |
| Cross-Section (mm) |
2.62 |
| Hardness (Shore A) |
70 To 75 |
| Key Media Compatibility |
Petroleum Oils, Hydraulic Fluids, Water, Fuels, Greases |
| Material |
NBR, FKM, VMQ |
| Typical Parker Compound |
N0674-70, V0747-75, S0604-70 |
Applications:
In hydraulic and pneumatic systems, NBR O-rings are commonly used for sealing cylinder components, valve bodies, and fluid line connections. Their excellent resistance to oils and fuels makes them ideal for ensuring reliable performance in these applications.
For chemical processing environments, FKM O-rings are preferred due to their excellent chemical resistance. These O-rings are typically utilized in pump housings, reactor seals, and lines that handle aggressive media, providing durability and leak prevention under harsh conditions.
When it comes to high-temperature and high-purity applications, VMQ O-rings offer outstanding suitability. They are widely employed in analytical instruments, cleanroom equipment, and various thermal processing setups, where maintaining purity and withstanding elevated temperatures are critical.
In general industrial assembly, AS568 2-series O-rings serve as versatile seals for a variety of components such as gearboxes, actuators, flanges, and standard gland sealing. Their standardized dimensions ensure compatibility and dependable sealing performance across numerous industrial uses.
Support and Services:
Our Pulse Valve Diaphragm product is supported by a dedicated technical support team committed to ensuring optimal performance and longevity of your equipment. We provide comprehensive services including installation guidance, maintenance advice, troubleshooting assistance, and replacement part sourcing. Our experts are available to help diagnose issues, recommend best practices, and offer tailored solutions to meet your specific application needs. Additionally, we supply detailed product documentation and technical resources to assist in the effective operation and upkeep of the pulse valve diaphragm. Trust our support services to maximize reliability and efficiency in your dust collector systems.
Packing and Shipping:
Each Pulse Valve Diaphragm is carefully packaged to ensure maximum protection during transit. The diaphragm is first placed in a sealed plastic bag to prevent contamination and moisture exposure. It is then cushioned with foam padding or bubble wrap to protect against impact and vibration. The packaged diaphragm is placed in a sturdy cardboard box labeled with product details and handling instructions.
For shipping, we use reliable carriers to guarantee timely and safe delivery. All packages are tracked from our warehouse to the destination to provide transparency and peace of mind. We recommend inspecting the package upon arrival and reporting any damage immediately to ensure prompt resolution.
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