Product Description:
Parker 3-series O-rings are expertly precision-molded elastomeric seals designed in accordance with AS568A dimensional standards. These seals are specifically crafted for application with internal straight thread fluid connection bosses and tube fittings, adhering to the specifications outlined in MS33656, MS357, and SAE for straight thread O-ring bosses.
This product line includes dash numbers ranging from 3-901 to 3-932. The O-rings feature inside diameters that vary between 4.70 mm (0.185 inches) and 59.36 mm (2.337 inches). Additionally, the cross-sectional sizes (cord widths) span from 1.42 mm (0.056 inches) up to 3.00 mm (0.118 inches).
To accommodate a wide range of fluid types and temperature conditions, these O-rings are offered in four main elastomer families. The NBR (Nitrile) variants are suited for general-purpose petroleum and hydraulic applications. FKM (Fluoroelastomer) O-rings provide resistance to aggressive chemicals and higher temperature environments. EPDM (Ethylene Propylene) versions are ideal for use with water, steam, and polar solvents. Finally, VMQ (Silicone) O-rings cater to extreme temperature conditions and applications requiring high purity.
Features:
Straight Thread Boss Compatibility
These seals are specifically sized to fit SAE straight thread O-ring ports. This precise sizing ensures a leak-tight seal against the chamfered port face, providing reliable performance in hydraulic systems.
AS568A Dimensional Compliance
The seals are molded according to the AS568A standard dash-number tolerances. This compliance guarantees drop-in interchangeability, making replacements and maintenance straightforward and efficient.
NBR (Nitrile) - General Purpose
NBR seals exhibit excellent resistance to petroleum-based hydraulic fluids, oils, and fuels. They operate efficiently within a temperature range of approximately -34°C to +100°C (-30°F to +212°F), making them suitable for a broad range of general-purpose applications.
FKM (Fluoroelastomer) - Chemical Resistance
FKM material offers high resistance to aggressive chemicals, acids, and high-temperature fluids. The standard service temperature range for FKM seals is roughly -25°C to +200°C (-13°F to +392°F), suitable for demanding and corrosive environments.
EPDM (Ethylene Propylene) - Water & Steam Service
EPDM seals are particularly preferred for applications involving hot water, steam, and polar solvents such as ketones and alcohols. These seals typically perform well within a temperature range of about -50°C to +150°C (-58°F to +302°F).
VMQ (Silicone) - Extreme Temperature Flexibility
Silicone (VMQ) seals provide a wide service temperature window, from approximately -55°C to +200°C (-67°F to +392°F). This makes them ideal for high-purity applications and environments with extreme temperature fluctuations.
Precision-Molded Geometry
The seals feature a precision-molded geometry that ensures uniform compression set resistance. This design contributes to consistent sealing integrity, especially important in high-pressure hydraulic systems where reliability is critical.
Technical Parameters:
| Cross-Section (mm) |
1.42 To 3 |
| Cross-Section (Inch) |
0.056 To 0.118 |
| Material |
NBR, FKM, EPDM, VWQ |
| Inside Diameter (mm) |
4.7 To 59.36 |
| Inside Diameter (Inch) |
0.185 To 2.337 |
| Representative Parker Compound |
N0674-70 / N0552-90, V0747-75 / V0894-90, E3609-70, S0604-70 |
| Media (EPDM) |
Hot Water, Steam, Brake Fluids, Polar Solvents |
| Hardness |
70 / 90 |
This Pulse Valve Diaphragm is an essential component for QBY diaphragm pump and QBY air diaphragm pump spare parts. It ensures reliable performance and durability in various applications requiring QBY air diaphragm pump spare parts.
Applications:
Hydraulic Systems and Manifolds
These systems involve sealing SAE straight thread ports found on hydraulic pumps, motors, and valve bodies. Proper sealing is essential to ensure the efficient operation and leak-free performance of hydraulic machinery.
Tube Fittings and Connectors
Tube fittings and connectors are utilized in both adjustable and non-adjustable fluid line assemblies. They provide secure and reliable connections for fluid transport in various hydraulic applications.
Automotive and Mobile Hydraulics
In the automotive and mobile equipment sectors, hydraulic systems cover transmission lines, power steering mechanisms, and ports in braking systems. These components demand high-quality sealing solutions to maintain safety and performance.
Industrial Fluid Power
Industrial fluid power applications include cylinder ports, gearboxes, and hydraulic power units. Effective sealing in these areas is critical for maintaining operational integrity and preventing fluid leakage.
Aerospace and Marine
Aerospace and marine fluid connections often require bosses that comply with Heavy-Duty Standard (MS) and SAE specifications. These standards ensure durability and reliability in demanding environments.
Support and Services:
Our Pulse Valve Diaphragm product is supported by a dedicated technical team committed to providing comprehensive assistance to ensure optimal performance and longevity. We offer expert guidance on installation, operation, and maintenance to help you achieve maximum efficiency in your applications.
Our services include troubleshooting support, replacement part identification, and detailed product documentation to facilitate easy integration into your systems. We also provide tailored maintenance schedules and best practice recommendations to minimize downtime and extend the service life of your pulse valve diaphragms.
For technical inquiries, product updates, and service requests, our support team is equipped to deliver timely and effective solutions, helping you maintain uninterrupted operation and achieve reliable performance from your pulse valve diaphragm products.
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-fitted box that provides cushioning against shocks and vibrations.
For bulk orders, individual diaphragms are packed in sealed bags and grouped in sturdy cartons with adequate padding materials to maintain product integrity. All packaging materials used are environmentally friendly and comply with international shipping regulations.
Shipping is handled by reliable carriers with tracking options available to ensure timely and safe delivery. We offer various shipping methods including standard, expedited, and freight services to accommodate the needs of our customers worldwide.
Before shipment, each package undergoes a quality inspection to verify the product's condition and packaging completeness. Customers will receive shipment confirmation along with tracking details once their order has been dispatched.
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