Parker AS568 O-Ring 2-218 2-219 2-220 2-221 2-222 2-223 2-224 2-225 ID 31.34mm-47.22mm CS 3.53mm NBR FKM EPDM Low Compression Set Seal For Mobile Hydraulic Pump End Cap And Port Fitting

Product Description:

The Parker 2-series O-rings are precision-engineered elastomeric seals crafted according to the AS568A dimensional standards. This series includes dash numbers ranging from 2-201 up to 2-284, all sharing a consistent cross-section thickness of 3.53 mm (0.139"). The inside diameters vary widely, starting from around 7.59 mm for the 2-201 size and extending to as large as 456.06 mm for the 2-284 size. This wide range accommodates a variety of gland sizes, from small hydraulic fittings to large-scale industrial housings.

These O-rings are available in three different elastomer families, each designed to meet specific fluid compatibility and temperature resistance requirements. The NBR (Nitrile) option is suitable for general-purpose applications involving petroleum products and hydraulic fluids. For environments where aggressive chemicals and elevated temperatures are present, the FKM (Fluoroelastomer) version offers enhanced durability. Lastly, the EPDM (Ethylene Propylene) type is ideal for use with water, steam, and polar solvents.

Each elastomer compound delivers excellent performance by providing dependable resistance to compression set and maintaining sealing integrity under both static and dynamic conditions within gland designs. This ensures reliable operation across a broad spectrum of industrial and hydraulic applications.

Features:

These seals are molded to meet the standard dash-number tolerances established by the AS568A specification. This ensures they can be used for drop-in interchangeability without requiring modifications.

The entire series from 2-201 to 2-284 maintains a uniform cross-section diameter of 3.53 mm with a tolerance of ± 0.10 mm. This consistency helps to streamline gland design and simplifies the planning for spare parts inventory.

NBR seals demonstrate excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. They typically operate effectively within a temperature range of approximately -34°C to +100°C (-30°F to +212°F).

FKM materials offer high resistance against aggressive chemicals, acids, and fuels. The usual service temperature range for these seals is about -25°C to +200°C (-13°F to +392°F).

EPDM is the preferred choice for applications involving hot water, steam, and polar solvents. Its typical operating temperature range spans from approximately -50°C to +150°C (-58°F to +302°F).

The product line covers a broad spectrum of 84 dash numbers, ranging from 2-201 to 2-284. This range includes inner diameters from roughly 7.59 mm all the way up to 456.06 mm, catering to a wide variety of sealing needs.

Technical Parameters:

This Pulse Valve Diaphragm is an essential component among QBY air diaphragm pump spare parts, designed specifically for QBY diaphragm pump applications. It ensures reliable performance and durability in various industrial uses of QBY diaphragm pump systems.

Applications:

In the realm of hydraulic and pneumatic systems, NBR O-rings are commonly utilized. These seals are essential for ensuring the integrity of cylinder seals, valve bodies, and various fluid line connections, providing reliable performance under different operating conditions.

For chemical processing applications, FKM O-rings are preferred due to their excellent resistance to aggressive media. They are widely used in pump housings, reactor seals, and transfer lines that handle harsh chemicals, ensuring long-lasting durability and safety.

When it comes to water and steam systems, EPDM O-rings offer superior performance. These seals are ideal for boiler fittings, hot water valves, and sanitary process lines, as they can withstand high temperatures and exposure to steam without degradation.

In general industrial assembly, AS568 2-series O-rings are the standard choice. They are commonly applied in gearboxes, actuators, flanges, and standard gland sealing, providing effective sealing solutions across diverse mechanical components.

Support and Services:

Our Pulse Valve Diaphragm is designed to deliver reliable and efficient performance in a variety of industrial applications. For technical support, our team of experts is available to assist with installation guidance, troubleshooting, and maintenance tips to ensure optimal operation. We provide detailed documentation including user manuals, installation guides, and replacement part lists to support your maintenance and repair needs.

We offer comprehensive services including diaphragm replacement, performance testing, and custom modifications to meet specific application requirements. Our support ensures minimal downtime and extends the service life of your pulse valve system. For ongoing maintenance, we recommend regular inspection and timely replacement of the diaphragm to prevent unexpected failures.

Whether you need technical advice or service assistance, our support team is committed to providing prompt and effective solutions to keep your operations running smoothly.

Packing and Shipping:

The Pulse Valve Diaphragm is carefully packaged to ensure maximum protection during transit. Each diaphragm is individually wrapped in a protective film to prevent contamination and damage. The wrapped diaphragms are then placed in sturdy, cushioned boxes designed to absorb shocks and vibrations.

For shipping, the packages are securely sealed and labeled with handling instructions to maintain product integrity. Depending on the order size, multiple units are packed in larger cartons with additional padding to avoid movement inside the box. All shipments are tracked and insured to guarantee safe and timely delivery to the customer.