Product Description:
Parker 2-series O-rings are expertly precision-molded elastomeric seals designed to conform to AS568A dimensional standards. This series encompasses dash numbers ranging from 2-102 to 2-178, all sharing a consistent cross-sectional thickness of 2.62 mm (0.103"). The inside diameters vary extensively, starting at 1.24 mm for the 2-102 size and extending up to 247.32 mm for the 2-178 size, thereby accommodating a wide variety of gland applications — from small-scale instrumentation to sizable industrial housings.
The O-rings in this series are offered in three main elastomer families, each tailored to address specific fluid compatibility and temperature demands. Firstly, NBR (Nitrile) is suitable for general-purpose use, particularly within petroleum and hydraulic systems. Secondly, FKM (Fluoroelastomer) is designed for handling aggressive chemicals and performing reliably at elevated temperatures. Lastly, VMQ (Silicone) caters to applications requiring extreme temperature resistance and high purity standards.
Every material formulation ensures dependable compression set resistance and maintains sealing effectiveness across both static and dynamic gland configurations. This makes Parker 2-series O-rings a versatile sealing solution for various industrial needs where durability and performance are critical.
Features:
AS568A Dimensional Compliance
These O-rings are molded to meet the standard dash-number tolerances established by the AS568A specification, ensuring seamless drop-in interchangeability across various applications.
Uniform Cross-Section
The entire series ranging from 2-102 to 2-178 maintains a consistent cross-section diameter of 2.62 mm ± 0.08 mm. This uniformity greatly simplifies both gland design and spare-parts inventory management.
Nitrile (NBR) - General Purpose
Nitrile O-rings provide excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. They typically perform well within a temperature range from approximately -34°C to +121°C (-30°F to +250°F), making them suitable for a broad range of general industrial applications.
Fluoroelastomer (FKM) - Chemical Resistance
FKM O-rings offer high resistance against aggressive chemicals, acids, and various fuels. Their standard operational temperature range spans from about -26°C to +204°C (-15°F to +400°F). Additionally, special formulations are available that extend low-temperature performance down to -46°C.
Silicone (VMQ) - Extreme Temperature Flexibility
Silicone O-rings are designed for exceptional flexibility across a wide temperature spectrum, approximately ranging from -54°C to +232°C (-65°F to +450°F). This makes them ideal for high-purity and medical applications where temperature extremes are common.
Precision Molded Compounds
These O-rings are available in standard Parker formulations such as N0674-70, V0747-75, and S0604-70. These formulations ensure consistent hardness and excellent compression set characteristics, enhancing reliability and performance.
Broad Size Coverage
The series includes 77 dash numbers ranging from 2-102 to 2-178, covering inside diameters from 1.24 mm up to 247.32 mm. This extensive size range accommodates diverse sealing requirements across multiple industries.
Technical Parameters:
| Inside Diameter (inch) |
0.049 To 9.737 |
| Inside Diameter (mm) |
1.24 To 247.32 |
| Cross-Section (inch) |
0.103 |
| 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 the field of hydraulic and pneumatic systems, NBR O-rings are extensively utilized. These seals are ideal for cylinder sealing, valve body applications, and fluid line connections, ensuring reliable performance and leak prevention.
For chemical processing applications, FKM O-rings are the preferred choice. They are specifically designed to withstand harsh environments, making them suitable for pump housings, reactor seals, and lines transporting aggressive media.
When dealing with high-temperature and high-purity requirements, VMQ O-rings provide excellent solutions. These seals are commonly employed in analytical instruments, cleanroom equipment, and thermal processing systems, thanks to their stability under extreme conditions.
In general industrial assembly, AS568 2-series O-rings are widely used. These standard gland seals are perfect for gearboxes, actuators, flanges, and other common sealing needs, offering dependable sealing performance across various machinery.
Support and Services:
Our Pulse Valve Diaphragm is backed by comprehensive technical support and services to ensure optimal performance and longevity. We provide detailed installation guides, maintenance instructions, and troubleshooting assistance to help you get the best out of your product. Our technical team is equipped to offer expert advice on selecting the right diaphragm for your specific application and operating conditions. We also offer replacement parts and timely repair services to minimize downtime. For ongoing support, we provide training sessions and updates on product enhancements to keep your system running smoothly.
Packing and Shipping:
Each Pulse Valve Diaphragm is carefully packaged to ensure maximum protection during transit. The diaphragm is first placed in a sealed anti-static bag to prevent any contamination or damage. It is then cushioned with foam padding and placed inside a sturdy, corrugated cardboard box designed to withstand impacts and vibrations.
For bulk orders, multiple units are securely arranged in larger boxes with additional padding to avoid movement and friction between items. All packages are clearly labeled with product information, handling instructions, and shipping details.
We use reliable shipping carriers to deliver the Pulse Valve Diaphragm products promptly and safely to your location. Tracking information is provided to keep you updated on the shipment status. Our packaging and shipping processes comply with industry standards to guarantee the product arrives in perfect condition and ready for use.
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