Product Description:
Parker 2-series O-rings are precision-engineered elastomeric seals that conform to the AS568A dimensional standards. This product line includes dash numbers ranging from 2-102 to 2-178, all characterized by a consistent cross-sectional thickness of 2.62 mm (0.103"). The inside diameters vary widely, starting at 1.24 mm for the 2-102 size and extending up to 247.32 mm for the 2-178 size. This extensive range accommodates a variety of gland dimensions, from small-scale instrumentation to large industrial housings.
The O-rings in this series are available in three main types of elastomer materials, each designed to handle different fluid compatibility and temperature conditions. The NBR (Nitrile) elastomer is suited for general-purpose applications involving petroleum and hydraulic fluids. For environments involving aggressive chemicals and higher temperature demands, the FKM (Fluoroelastomer) option is recommended. Lastly, the VMQ (Silicone) elastomer is ideal for applications requiring extreme temperature resistance and suitability for high-purity uses.
Each elastomer compound offers dependable resistance to compression set and ensures sealing effectiveness in both static and dynamic gland configurations. This combination of precision manufacturing and diverse material options makes Parker 2-series O-rings a reliable choice for a broad spectrum of sealing applications.
Features:
The AS568A specification ensures dimensional compliance by molding seals to the standard dash-number tolerances. This guarantees drop-in interchangeability, making replacements and maintenance straightforward and reliable.
A uniform cross-section of 2.62 mm is maintained throughout the entire 2-102 to 2-178 series. With a precise cord diameter of 2.62 ± 0.08 mm, this consistency simplifies gland design and streamlines spare-parts management.
For general-purpose applications, NBR (Nitrile) offers excellent resistance to petroleum oils, fuels, and hydraulic fluids. It typically operates within a temperature range of approximately -34°C to +121°C (-30°F to +250°F), providing dependable performance in various environments.
FKM (Fluoroelastomer) compounds provide superior chemical resistance, especially against aggressive chemicals, acids, and fuels. Their standard service temperature range spans about -26°C to +204°C (-15°F to +400°F), while special low-temperature variants can extend the lower limit down to -46°C.
VMQ (Silicone) materials excel in extreme temperature flexibility, offering a broad service window from approximately -54°C to +232°C (-65°F to +450°F). This makes them particularly suitable for high-purity and medical applications where performance under wide temperature variations is critical.
These products utilize precision-molded compounds available in standard Parker formulations, such as N0674-70, V0747-75, and S0604-70. This ensures uniform hardness and reliable compression set characteristics across the range.
The series covers a broad size range with 77 dash numbers, spanning from 2-102 to 2-178. This corresponds to inner diameters ranging from 1.24 mm up to 247.32 mm, accommodating a diverse array of sealing requirements.
Technical Parameters:
| Typical Parker Compound |
N0674-70, V0747-75, S0604-70 |
| Inside Diameter (mm) |
1.24 To 247.32 |
| Inside Diameter (inch) |
0.049 To 9.737 |
| Cross-Section (mm) |
2.62 |
| Cross-Section (inch) |
0.103 |
| Hardness (Shore A) |
70 To 75 |
| Material |
NBR, FKM, VMQ |
| Key Media Compatibility |
Petroleum Oils, Hydraulic Fluids, Water, Fuels, Greases |
Applications:
In the realm of hydraulic and pneumatic systems, NBR O-rings play a crucial role. These seals are commonly used in cylinder seals, valve bodies, and connections within fluid lines, ensuring reliable performance and leak prevention.
When it comes to chemical processing applications, FKM O-rings are the preferred choice. They are designed to withstand harsh environments and are used extensively in pump housings, reactor seals, and lines that handle aggressive media transfer.
For high-temperature and high-purity requirements, VMQ O-rings are ideal. These specialized seals are found in analytical instruments, cleanroom equipment, and thermal processing systems, providing excellent stability and purity under demanding conditions.
In general industrial assembly, the AS568 2-series O-rings are widely utilized. These versatile seals are essential components in gearboxes, actuators, flanges, and standard gland sealing applications, offering dependable sealing solutions across various industries.
Support and Services:
Our Pulse Valve Diaphragm is engineered for optimal performance and durability in demanding industrial environments. To ensure the longevity and efficiency of your pulse valve diaphragm, regular inspection and maintenance are recommended. Replace the diaphragm if you notice any signs of wear, cracking, or deformation.
For technical support, our team of experts is available to assist with installation guidance, troubleshooting, and performance optimization. We provide detailed documentation and resources to help you achieve the best results with your pulse valve diaphragm.
We also offer comprehensive services including diaphragm replacement, customization options to meet specific application requirements, and advice on compatible components to enhance system reliability.
Ensure compatibility by selecting the correct diaphragm model based on your pulse valve specifications and operating conditions. Proper installation and handling are critical to maintaining the valve’s sealing integrity and operational efficiency.
Contact our support team for assistance with product selection, technical inquiries, and service requests to keep your pulse valve system operating smoothly and efficiently.
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 any contamination or damage. It is then securely positioned within a sturdy cardboard box with cushioning materials to absorb shocks and vibrations.
For shipping, we use reliable carriers to guarantee timely and safe delivery. Each package is clearly labeled with product information and handling instructions. Bulk orders are packed in reinforced cartons with additional padding to maintain product integrity throughout the shipping process.
We also offer customized packaging solutions upon request to meet specific customer requirements. Our commitment is to deliver the Pulse Valve Diaphragm in perfect condition, ready for immediate use upon arrival.
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