Product Description:
Parker 3-series O-rings are precision-engineered elastomeric seals that conform to the AS568A dimensional standards. These O-rings are specifically designed for use with internal straight thread fluid connection bosses and tube fittings, adhering to specifications such as MS33656, MS357, and SAE straight thread O-ring bosses.
The product range includes dash numbers from 3-901 to 3-932. The inside diameters of these O-rings vary from 4.70 mm (0.185 inches) up to 59.36 mm (2.337 inches). Additionally, the cross-sectional sizes, also known as cord widths, range between 1.42 mm (0.056 inches) and 3.00 mm (0.118 inches).
To address various fluid and temperature demands, these O-rings are offered in four main elastomer categories. These include NBR (Nitrile), ideal for general-purpose petroleum and hydraulic applications; FKM (Fluoroelastomer), which is suited for harsh chemicals and high-temperature environments; EPDM (Ethylene Propylene), recommended for use with water, steam, and polar solvents; and VMQ (Silicone), designed for extreme temperature conditions and high-purity uses.
Features:
The straight thread boss is designed specifically for SAE straight thread O-ring ports. This precise sizing ensures a leak-tight seal by fitting securely against the chamfered port face, providing reliable performance in various hydraulic applications.
Compliance with AS568A dimensional standards guarantees that the molded components meet the standard dash-number tolerances. This allows for easy drop-in interchangeability without the need for additional modifications or adjustments.
The NBR (Nitrile) material is known for its excellent resistance to petroleum-based hydraulic fluids, oils, and fuels. It typically operates within a temperature range from approximately -34°C to +100°C (-30°F to +212°F), making it suitable for general-purpose sealing applications.
FKM (Fluoroelastomer) offers superior chemical resistance, particularly against aggressive chemicals, acids, and high-temperature fluids. Its standard service temperature ranges from about -25°C up to +200°C (-13°F to +392°F), making it ideal for demanding chemical environments.
EPDM (Ethylene Propylene) is preferred for use with hot water, steam, and polar solvents such as ketones and alcohols. Its effective temperature range spans roughly from -50°C to +150°C (-58°F to +302°F), providing durability in steam and water service conditions.
VMQ (Silicone) exhibits exceptional flexibility across an extreme temperature range, approximately from -55°C to +200°C (-67°F to +392°F). This makes it perfectly suited for applications requiring high purity and performance in extreme temperature environments.
Additionally, the precision-molded geometry of these seals ensures uniform compression set resistance. This results in reliable sealing integrity, especially important in high-pressure hydraulic systems where consistent performance is critical.
Technical Parameters:
| Hardness |
70 / 90 |
| Inside Diameter (Inch) |
0.185 To 2.337 |
| Inside Diameter (mm) |
4.7 To 59.36 |
| Cross-Section (mm) |
1.42 To 3 |
| Cross-Section (Inch) |
0.056 To 0.118 |
| Representative Parker Compound |
N0674-70 / N0552-90, V0747-75 / V0894-90, E3609-70, S0604-70 |
| Material |
NBR, FKM, EPDM, VWQ |
| Media (EPDM) |
Hot Water, Steam, Brake Fluids, Polar Solvents |
Applications:
Hydraulic Systems & Manifolds
These systems involve sealing SAE straight thread ports found on hydraulic pumps, motors, and valve bodies. Ensuring tight seals in these components is critical for maintaining system integrity and preventing fluid leaks.
Tube Fittings & Connectors
Tube fittings and connectors are commonly utilized in both adjustable and fixed fluid line fittings. Their design accommodates various fluid transfer applications, providing reliable and secure connections.
Automotive & Mobile Hydraulics
In automotive and mobile hydraulic systems, these components are essential for transmission lines, power steering assemblies, and braking system ports. They play a vital role in ensuring the performance and safety of vehicles.
Industrial Fluid Power
Industrial applications include cylinder ports, gearboxes, and hydraulic power units. Proper sealing and connection in these areas enhance operational efficiency and durability of hydraulic machinery.
Aerospace & Marine
Fluid connection bosses in aerospace and marine environments must comply with MS and SAE standards. This compliance guarantees reliability and safety under demanding conditions.
Support and Services:
Our Pulse Valve Diaphragm is designed to ensure optimal performance and longevity of your pulse valve system. For technical support, our team of experts is available to assist with installation guidance, troubleshooting, and maintenance recommendations to help you achieve maximum efficiency.
We offer comprehensive services including replacement diaphragm installation, system diagnostics, and performance evaluations. Regular maintenance and timely replacement of the diaphragm are crucial to prevent leaks and ensure reliable operation of your pulse valve.
For best results, always use genuine replacement parts and follow the manufacturer's guidelines for cleaning and inspection. Our technical support team can provide detailed manuals, instructional videos, and on-site assistance if required.
Whether you need help with selecting the right diaphragm model for your application or require support during system upgrades, we are committed to delivering prompt and effective solutions tailored to your needs.
Packing and Shipping:
Each Pulse Valve Diaphragm is carefully packaged to ensure maximum protection during transit. The diaphragm is placed in a sealed plastic bag to prevent contamination and moisture exposure. It is then cushioned with foam padding inside a sturdy cardboard box to avoid any damage caused by impact or rough handling.
For bulk orders, the diaphragms are individually packed and then grouped together in larger cartons with additional protective materials to maintain product integrity. All packages are clearly labeled with product information and handling instructions.
We use reliable shipping carriers to deliver your order promptly and safely. Tracking information will be provided once your shipment is dispatched, allowing you to monitor the delivery status in real time.
If you have any special packaging or shipping requirements, please contact our customer service team, and we will be happy to accommodate your needs.
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