Product Description:
Parker's 2-series O-rings are precision-engineered elastomeric seals that conform to the AS568A dimensional standards. This series includes dash numbers ranging from 2-102 to 2-178, all maintaining a consistent cross-section size of 2.62 mm (0.103"). The internal diameters span from a small 1.24 mm (2-102) to a large 247.32 mm (2-178), making them suitable for a wide variety of gland sizes. These sizes range from tiny instrumentation components to large-scale industrial housings.
These O-rings come in three main elastomer families, each designed to address distinct fluid compatibility and temperature demands. The NBR (Nitrile) option is ideal for general-purpose applications involving petroleum and hydraulic fluids. FKM (Fluoroelastomer) varieties are engineered to withstand aggressive chemicals and higher temperature environments. Meanwhile, the VMQ (Silicone) type caters to applications requiring extreme temperature resistance and high purity.
All compounds in this range offer dependable compression set resistance and maintain robust sealing performance. They are suitable for use in both static and dynamic gland configurations, ensuring reliable operation across diverse mechanical systems.
Features:
The AS568A standard ensures dimensional compliance, with molded products adhering strictly to the dash-number tolerances. This guarantees drop-in interchangeability, making replacements and maintenance straightforward and reliable.
One key feature of the 2-102 to 2-178 series is its uniform cross-section measuring 2.62 mm. This consistent dimension, with a tolerance of ±0.08 mm, greatly simplifies gland design and streamlines spare parts inventory management, enhancing overall system efficiency.
The material options include NBR (Nitrile), which is a general-purpose compound known for its excellent resistance to petroleum oils, fuels, and hydraulic fluids. NBR typically performs well within a temperature range from approximately -34°C to +121°C (-30°F to +250°F), making it suitable for many industrial applications.
FKM (Fluoroelastomer) offers superior chemical resistance, excelling against aggressive chemicals, acids, and various fuels. It functions effectively within a temperature range of about -26°C to +204°C (-15°F to +400°F). Additionally, special low-temperature formulations can extend its usability down to -46°C.
For applications requiring extreme temperature flexibility, VMQ (Silicone) is an excellent choice. It operates across a wide temperature span from roughly -54°C to +232°C (-65°F to +450°F) and is particularly suited for high-purity and medical environments due to its unique properties.
All compounds are precision molded using standard Parker formulations such as N0674-70, V0747-75, and S0604-70. This ensures consistent hardness and reliable compression set characteristics for superior performance.
The product line features broad size coverage with 77 dash numbers ranging from 2-102 to 2-178. This translates into inner diameters from 1.24 mm all the way to 247.32 mm, catering to a diverse array of sealing needs.
Technical Parameters:
| Cross-Section (mm) |
2.62 |
| Cross-Section (inch) |
0.103 |
| Hardness (Shore A) |
70 To 75 |
| Typical Parker Compound |
N0674-70, V0747-75, S0604-70 |
| Material |
NBR, FKM, VMQ |
| Inside Diameter (mm) |
1.24 To 247.32 |
| Inside Diameter (inch) |
0.049 To 9.737 |
| Key Media Compatibility |
Petroleum Oils, Hydraulic Fluids, Water, Fuels, Greases |
Applications:
In hydraulic and pneumatic systems, NBR O-rings are extensively used to ensure reliable sealing. They are commonly installed in cylinder seals, valve bodies, and connections within fluid lines, providing excellent performance under dynamic conditions.
For chemical processing applications, FKM O-rings are preferred due to their resistance to aggressive chemicals. These O-rings are ideal for pump housings, reactor seals, and transfer lines that handle harsh media, ensuring durability and leak prevention.
When dealing with high-temperature and high-purity environments, VMQ O-rings are the material of choice. They are suitable for use in analytical instruments, cleanroom equipment, and thermal processing systems where maintaining purity and withstanding elevated temperatures is essential.
In general industrial assembly tasks, AS568 2-series O-rings provide reliable sealing solutions. These O-rings are commonly utilized in gearboxes, actuators, flanges, and standard gland sealing applications, offering versatility and consistent performance across various machinery components.
Support and Services:
Our Pulse Valve Diaphragm is designed to ensure optimal performance and reliability in various industrial applications. For technical support, please refer to the installation and maintenance guidelines provided with the product. Regular inspection and timely replacement of the diaphragm are crucial to maintaining efficient pulse valve operation.
We offer comprehensive services including troubleshooting assistance, replacement parts, and expert advice to help you maximize the lifespan of your pulse valve diaphragm. Our technical support team is equipped to guide you through installation procedures, compatibility checks, and performance optimization to ensure seamless integration with your existing systems.
For maintenance, it is recommended to clean the diaphragm regularly to prevent buildup of debris and to check for signs of wear or damage. Using genuine replacement diaphragms ensures compatibility and maintains the integrity of the pulse valve system.
Our service commitment includes providing detailed product documentation, user manuals, and instructional videos to assist you in achieving the best results with your pulse valve diaphragm. We strive to support your operational needs with timely and professional service solutions.
Packing and Shipping:
Each Pulse Valve Diaphragm is carefully packaged to ensure maximum protection during transit. The diaphragm is first placed in a protective plastic sleeve to prevent contamination and damage. It is then securely positioned within a custom-molded foam insert inside a sturdy cardboard box. This packaging method minimizes movement and absorbs shocks, ensuring the product arrives in perfect condition.
For shipping, we use reliable carriers with tracking options to provide timely and safe delivery. All packages are labeled clearly with handling instructions to avoid mishandling. We also offer expedited shipping options for urgent orders. Upon receipt, please inspect the product immediately and contact us if there are any issues with the packaging or the diaphragm itself.
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