Product Description:
Parker AS568 2-Series O-Rings, encompassing sizes from 2-001 to 2-050, are miniature sealing rings crafted with precision molding techniques. These elastomeric rings feature a consistent cross-section measuring 0.070 inches (1.78 mm). Designed according to AS568A dimensional standards, these small-diameter O-rings are offered in four different high-performance polymer materials: NBR (nitrile), FKM (fluorocarbon), EPDM (ethylene propylene), and VMQ (silicone). Each material type is specifically developed to meet various fluid compatibility, temperature ranges, and environmental conditions.
The 2-Series O-Rings are specifically engineered for applications requiring compact, space-saving seals. They are suitable for low to medium pressure environments, designed primarily for static or light dynamic sealing purposes. Their inside diameters range from as small as 0.029 inches (0.74 mm) for the 2-001 size, up to 2.989 inches (75.92 mm) for the 2-050 size. This size range includes the smallest standard O-rings in the AS568 series, making the 2-Series an ideal choice for sensors, miniature valves, small fittings, analytical instruments, and compact pneumatic or hydraulic components.
Depending on the specific sealing requirements, users can select from different polymer families within the Parker 2-Series. NBR offers excellent oil resistance, making it suitable for applications involving petroleum-based fluids. FKM provides superior chemical and temperature resistance, ideal for harsh environments. EPDM is well suited for applications involving hot water, steam, and weather exposure. Lastly, VMQ silicone is known for its broad temperature range and physiological inertness. Together, these materials provide a versatile, off-the-shelf sealing solution characterized by consistent compound quality and worldwide availability.
Features:
AS568A Dimensional Compliance
The AS568A O-rings are designed to be fully interchangeable with standard aerospace and industrial O-ring grooves. This ensures compatibility and ease of integration into existing systems that adhere to these established standards.
Material Options
There are four elastomer materials available to suit a wide range of applications:
- NBR: General-purpose with excellent oil resistance.
- FKM: Suitable for high-temperature environments and resistant to aggressive chemicals.
- EPDM: Ideal for steam, water, brake fluid, and weather exposure.
- VMQ: Known for a wide temperature range and physiological inertness.
Miniature Cross-Section Design
Featuring a compact cord diameter of 1.78 mm (± 0.08 mm), these O-rings are capable of sealing in extremely confined radial and axial spaces, making them well-suited for applications where space is at a premium.
Inside Diameter Range
The inside diameter of the AS568A O-rings spans from as small as 0.74 mm (2-001) up to 75.92 mm (2-050). This range covers the full spectrum of small sizes within the AS568 2-series, providing versatile sizing options.
Common Durometer Grades
These O-rings typically come in durometer grades of 70 Shore A, 75 Shore A, and 90 Shore A. Availability depends on the specific compound and size, allowing for tailored hardness to match different application requirements.
High-Quality Manufacturing Standards
Manufactured with Parker CBI (Controlled Batch Identification) traceability, these O-rings adhere to strict quality controls. Where applicable, they also meet MIL-STD-413C visual acceptance criteria, ensuring high-performance reliability.
Chemical Compatibility
Each elastomer material offers a unique resistance profile against various chemicals. Detailed selection guidance is provided within the specification tables to help users choose the appropriate material for their specific use case.
Technical Parameters:
| Series |
AS568 2-Series |
| Temperature Range (FKM) |
-25°C To +200°C |
| Tolerance (mm) |
±0.10 |
| Temperature Range (EPDM) |
-57°C To +150°C |
| Hardness |
70 / 90 |
| Material |
NBR, FKM, EPDM, VMQ |
| Cross-Section (inch) |
0.040 |
| Temperature Range (NBR) |
-34°C To +121°C |
| Temperature Range (VMQ) |
-55°C To +200°C (up To +232°C) |
| Inside Diameter (inch) |
0.029 To 5.239 |
Applications:
Precision Instruments and Sensors
These include small ports, transducer housings, and enclosures designed for analytical devices. The components are crafted to ensure high accuracy and reliability in various measurement and sensing applications.
Miniature Pneumatic and Hydraulic Systems
This category encompasses compact cylinders, small-bore actuators, valve bodies, and fitting seals. These elements are engineered to perform efficiently within limited spaces while maintaining strength and durability under operational pressure.
Automotive and Transportation
Components such as fuel system parts, small fluid connectors, sensor seals, and sub-assemblies for brake systems utilize EPDM materials optimized for glycol-based fluids. These components are crucial for maintaining safety and performance in vehicles.
Medical and Life-Science Devices
VMQ grades that comply with FDA and USP Class VI standards are ideal for fluid-path seals in diagnostic and laboratory instrumentation. These medical-grade materials ensure biocompatibility and reliability.
Food and Beverage Processing
EPDM and VMQ compounds are available with certifications suitable for potable water and food-contact areas. These materials meet strict compliance requirements to ensure safety and hygiene in processing environments.
Semiconductor and High-Purity Systems
FKM and specialty-cleaned VMQ options cater to chemically aggressive or high-temperature conditions in miniature environments. These materials support the stringent demands of semiconductor manufacturing and other high-purity applications.
General Industrial Sealing
Applications include gearboxes, pumps, small flanges, and end-caps, particularly where space constraints exist and adherence to AS568 O-ring standardization is necessary. These seals provide reliable performance in a variety of industrial settings.
Rotary Seal Auxiliary Elements
Small 2-series O-rings serve as energizers or auxiliary sealing components within certain PTFE rotary seal assemblies. These elements enhance sealing efficiency in dynamic rotary applications.
Customization:
Our Parker Pulse Valve Diaphragm, model number 2-001, is a high-quality QBY air diaphragm pump spare part manufactured in China. Certified with CE, this product guarantees reliable performance and durability for your air diaphragm pump needs.
We offer product customization services with a minimum order quantity of 1 piece, allowing you to negotiate the price to suit your budget. The diaphragm is made from premium materials including NBR, FKM, EPDM, and VMQ, ensuring compatibility and optimal performance across various applications.
The diaphragm features a precise tolerance of ±0.10 mm and a cross-section thickness of 0.040 inches, designed specifically for QBY air diaphragm pump spare parts to provide a perfect fit and long-lasting service.
Temperature ranges vary by material: EPDM diaphragms operate efficiently between -57°C to +150°C, while VMQ diaphragms can withstand temperatures from -55°C up to +200°C, and even up to +232°C in some cases, making them suitable for demanding environments.
Packaging details include secure carton packaging to ensure safe delivery. We maintain a supply ability of 5000 pieces per month, with delivery times ranging from 1 to 7 work days after payment confirmation.
Payment terms are flexible, accepting T/T, Western Union, and Paypal to facilitate smooth transactions. Choose our Parker Pulse Valve Diaphragm for reliable and customizable QBY air diaphragm pump spare parts tailored to your specific requirements.
Support and Services:
Our Pulse Valve Diaphragm product is supported by a dedicated technical team committed to ensuring optimal performance and longevity of your equipment. We offer comprehensive installation guidance, troubleshooting assistance, and maintenance tips to help you achieve the best results.
Our services include detailed product documentation, compatibility assessments, and customized solutions tailored to your specific application needs. Whether you require assistance with replacement, repair, or upgrading existing systems, our experts are ready to provide timely and effective support.
We also provide training sessions and workshops to help your technical staff understand the proper handling and operation of the Pulse Valve Diaphragm, ensuring safety and efficiency in your processes. Regular updates and service bulletins keep you informed about the latest enhancements and best practices.
For any technical inquiries or service requests related to the Pulse Valve Diaphragm, our team is prepared to deliver prompt and professional assistance, helping to minimize downtime and maximize productivity.
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