Product Description:
The Parker AS568 2-Series O-Rings, covering sizes 2-001 through 2-050, are precision-molded elastomeric sealing rings designed with a uniform cross-section measuring 0.070 inches (1.78 mm). These miniature O-rings feature small diameters and conform to the AS568A dimensional standards, ensuring high accuracy and reliability in various sealing applications.
This series is offered in four distinct high-performance polymer materials: NBR (nitrile), FKM (fluorocarbon), EPDM (ethylene propylene), and VMQ (silicone). Each material is specially formulated to meet specific requirements related to fluids, temperature ranges, and environmental conditions, providing versatile sealing options for a wide range of uses.
Engineered for space-limited, low to medium pressure sealing tasks in both static and light dynamic settings, the 2-Series O-Rings cover inside diameters from as small as 0.029 inches (0.74 mm) for size 2-001 up to 2.989 inches (75.92 mm) for size 2-050. This range encompasses the smallest standardized AS568 sizes, making these O-rings especially suitable for applications such as sensors, small fittings, miniature valves, analytical instruments, and compact pneumatic or hydraulic components.
Regardless of whether the sealing requirement involves oil resistance, provided by NBR; exceptional chemical and temperature stability, offered by FKM; resistance to hot water, steam, and weather, characteristic of EPDM; or broad temperature tolerance combined with physiological inertness, delivered by VMQ, the Parker 2-Series provides a reliable, ready-to-use sealing solution. These O-rings guarantee consistent compound quality and are widely available worldwide, ensuring dependable sealing performance across diverse applications.
Features:
AS568A Dimensional Compliance
The AS568A O-rings meet strict dimensional standards, ensuring they are fully interchangeable with standard aerospace and industrial O-ring grooves. This compatibility guarantees seamless integration in a variety of applications without the need for groove modifications.
Variety of Elastomer Materials
There are four elastomer options available to suit different operating environments:
- NBR : General-purpose oil resistance.
- FKM : Designed for high temperatures and exposure to aggressive chemicals.
- EPDM : Ideal for use with steam, water, brake fluids, and weather resistance.
- VMQ : Provides a wide temperature range and is physiologically inert.
Compact Miniature Cross-Section
With a cord diameter of just 1.78 mm (± 0.08 mm), these O-rings are designed for sealing within extremely tight radial and axial spaces, making them perfect for applications where space is limited.
Wide Inside Diameter Range
The inside diameter of these O-rings ranges from as small as 0.74 mm (size 2-001) up to 75.92 mm (size 2-050). This range covers the full spectrum of small-size AS568 2-series O-rings, accommodating a variety of sealing needs.
Available Durometers
Common durometer options for these O-rings include 70 Shore A, 75 Shore A, and 90 Shore A. The specific durometer depends on the compound and size, allowing for customization based on the application requirements.
Superior Quality Molding
The O-rings are manufactured with high-quality molding processes, featuring Parker CBI (Controlled Batch Identification) traceability and compliance with MIL-STD-413C visual acceptance standards where applicable. This ensures consistent quality and reliability.
Extensive Chemical Compatibility
Each elastomer material possesses a unique chemical resistance profile. Detailed selection guidance is provided in the specification tables to help choose the appropriate material for your specific chemical exposure and operating conditions.
Technical Parameters:
| Temperature Range (FKM) |
-25°C To +200°C |
| Series |
AS568 2-Series |
| Hardness |
70 / 90 |
| Tolerance (mm) |
±0.10 |
| Temperature Range (VMQ) |
-55°C To +200°C (up To +232°C) |
| Inside Diameter (inch) |
0.029 To 5.239 |
| Cross-Section (inch) |
0.040 |
| Material |
NBR, FKM, EPDM, VMQ |
| Temperature Range (NBR) |
-34°C To +121°C |
| Temperature Range (EPDM) |
-57°C To +150°C |
This QBY diaphragm pump features a robust design with a wide temperature range and multiple material options including NBR, FKM, EPDM, and VMQ. The AS568 2-Series pulse valve diaphragm is ideal for various applications requiring precision and durability in QBY diaphragm pump systems.
Applications:
Precision Instruments and Sensors
This category includes small ports, transducer housings, and enclosures for analytical devices. These components demand high accuracy and reliability to ensure optimal performance in precision instrumentation.
Miniature Pneumatic and Hydraulic Systems
Compact cylinders and small-bore actuators are integral parts of miniature pneumatic and hydraulic systems. Additionally, valve bodies and fitting seals play critical roles in maintaining system integrity and efficient fluid control.
Automotive and Transportation
In the automotive and transportation sectors, components such as fuel system parts, small fluid connectors, and sensor seals are essential. Brake system sub-assemblies made from EPDM are particularly suitable for handling glycol-based fluids, ensuring safety and durability.
Medical and Life-Science Devices
Medical applications utilize VMQ grades that comply with FDA and USP Class VI standards. These materials are ideal for fluid-path seals found in diagnostic and laboratory equipment, where biocompatibility and hygiene are paramount.
Food and Beverage Processing
EPDM and VMQ compounds with appropriate compliance certifications are used in potable water and food-contact zones. These materials meet stringent regulations required for food and beverage processing environments.
Semiconductor and High-Purity Systems
FKM and specially cleaned VMQ options are designed for chemically aggressive or high-temperature miniature environments common in semiconductor manufacturing and other high-purity applications.
General Industrial Sealing
Applications in gearboxes, pumps, small flanges, and end-caps benefit from sealing solutions where limited space is a concern. Components often adhere to AS568 standardization to ensure compatibility and ease of replacement.
Rotary Seal Auxiliary Elements
Small 2-series O-rings serve as energizers or auxiliary sealing elements in specific PTFE rotary seal assemblies, contributing to enhanced sealing performance in rotary applications.
Customization:
Our Pulse Valve Diaphragm, branded Parker and model number 2-001, is a high-quality product originating from China, certified with CE to ensure reliability and safety. Designed to meet the needs of QBY diaphragm pump and QBY air diaphragm pump spare parts, this diaphragm is an essential component for maintaining efficient operation.
We offer a minimum order quantity of 1 piece, with prices available upon negotiation to suit your specific requirements. Each diaphragm is carefully packaged in a carton to ensure safe delivery. With a supply ability of 5000 pieces per month, we can fulfill orders promptly.
The delivery time ranges from 1 to 7 work days after payment, and we accept various payment terms including T/T, Western Union, and Paypal for your convenience. The diaphragm is made from premium materials such as NBR, FKM, EPDM, and VMQ, providing excellent durability and performance in diverse applications.
The temperature range for FKM material spans from -25°C to +200°C, while VMQ material withstands temperatures from -55°C up to +200°C, with a maximum of +232°C. The inside diameter varies from 0.029 inch to 5.239 inch, accommodating different pump sizes with a tolerance of ±0.10 mm to ensure a precise fit.
Whether you need replacement parts for your QBY diaphragm pump or QBY air diaphragm pump spare parts, our Pulse Valve Diaphragm offers outstanding quality and reliable performance to keep your equipment running smoothly.
Support and Services:
Our Pulse Valve Diaphragm product is supported by a dedicated technical support team committed to ensuring optimal performance and longevity. We provide comprehensive installation guidance, troubleshooting assistance, and maintenance tips to help you get the most out of your pulse valve diaphragm.
Our services include detailed product manuals, replacement part recommendations, and on-site support when necessary. We also offer training sessions to educate your staff on proper handling and preventive maintenance practices.
For any technical inquiries or service requests, our experts are ready to assist you in diagnosing issues and providing effective solutions to minimize downtime and maximize efficiency.
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