Product Description:
The Parker AS568 2-Series O-Rings, encompassing sizes 2-001 through 2-050, are miniature sealing rings crafted with precision molding techniques. These elastomeric rings feature a consistent cross-section thickness of 0.070 inches (1.78 mm), ensuring uniformity and reliability in performance. Designed according to the AS568A dimensional specifications, these small-diameter O-rings are ideal for applications requiring compact sealing solutions.
Available in four advanced polymer types—NBR (nitrile), FKM (fluorocarbon), EPDM (ethylene propylene), and VMQ (silicone)—each material offers unique properties tailored to meet specific fluid compatibility, temperature ranges, and environmental conditions. This variety allows users to select the optimal compound based on their application needs, whether they involve chemical resistance, temperature extremes, or flexibility.
The 2-Series O-Rings are specifically engineered to perform in space-limited environments, providing effective sealing under low to medium pressure for both static and lightly dynamic systems. With inside diameters spanning 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, this series includes some of the smallest standard sizes available in the AS568 lineup. Consequently, these O-rings are an excellent choice for precision equipment such as sensors, small fittings, miniature valves, analytical devices, and compact pneumatic or hydraulic components.
Whether your application demands resistance to oils (NBR), exceptional chemical and temperature durability (FKM), tolerance to hot water, steam, and weather elements (EPDM), or a wide temperature range combined with physiological inertness (VMQ), the Parker 2-Series offers a reliable, off-the-shelf sealing solution. These O-rings provide consistent material quality and are readily accessible worldwide, making them a dependable choice for many industries.
Features:
AS568A Dimensional Compliance
The AS568A O-rings are designed to be fully interchangeable with standard aerospace and industrial O-ring grooves, ensuring compatibility and ease of replacement across a variety of applications.
Available Elastomer Materials
There are four elastomer options available to suit different environmental and chemical requirements:
- NBR: General-purpose elastomer offering resistance to oils.
- FKM: Suitable for high temperature exposure and aggressive chemicals.
- EPDM: Ideal for applications involving steam, water, brake fluids, and weather resistance.
- VMQ: Provides a wide temperature range and physiological inertness.
Miniature Cross-Section Dimensions
Featuring a miniature cord diameter of 1.78 mm (± 0.08 mm), these O-rings enable effective sealing even in extremely tight radial and axial clearances.
Inside Diameter Range
The O-rings cover a comprehensive range of small sizes, from an inside diameter of 0.74 mm (2-001 size) up to 75.92 mm (2-050 size), encompassing the full spectrum of the AS568 2-series.
Durometer Hardness Options
Commonly available durometers include 70 Shore A, 75 Shore A, and 90 Shore A. The specific hardness depends on the elastomer compound and size requirements.
High-Quality Manufacturing Standards
These O-rings are produced with Parker’s Controlled Batch Identification (CBI) system, allowing full traceability. Where applicable, manufacturing meets MIL-STD-413C visual acceptance standards, ensuring consistent quality.
Chemical Compatibility
Each material offers unique resistance characteristics against various chemicals. Detailed selection guidance can be found in the accompanying specification tables to assist in choosing the most suitable elastomer for your application.
Technical Parameters:
| Series |
AS568 2-Series |
| Material |
NBR, FKM, EPDM, VMQ |
| Hardness |
70 / 90 |
| Cross-Section (inch) |
0.040 |
| Inside Diameter (inch) |
0.029 To 5.239 |
| Tolerance (mm) |
±0.10 |
| Temperature Range (VMQ) |
-55°C To +200°C (up To +232°C) |
| Temperature Range (FKM) |
-25°C To +200°C |
| Temperature Range (EPDM) |
-57°C To +150°C |
| Temperature Range (NBR) |
-34°C To +121°C |
Applications:
Precision Instruments and Sensors
This category includes small ports, transducer housings, and enclosures designed for analytical devices. These components are crucial for ensuring accurate measurements and reliable sensor performance in various technical applications.
Miniature Pneumatic and Hydraulic Systems
Compact cylinders, small-bore actuators, valve bodies, and fitting seals are key elements in miniature pneumatic and hydraulic systems. Their compact design allows for efficient operation in tight spaces while maintaining system integrity and performance.
Automotive and Transportation
Components such as fuel system parts, small fluid connectors, sensor seals, and brake system sub-assemblies utilize specialized materials like EPDM, which is resistant to glycol-based fluids. These parts contribute to the safety and efficiency of automotive and transportation systems.
Medical and Life-Science Devices
VMQ grades that meet FDA and USP Class VI standards are ideal for fluid-path seals used in diagnostic and laboratory equipment. Their biocompatibility and compliance ensure reliability and safety in sensitive medical applications.
Food and Beverage Processing
EPDM and VMQ compounds are available with certifications suitable for contact with potable water and food-processing environments. These materials comply with necessary health and safety standards, supporting hygienic operations in the food and beverage industry.
Semiconductor and High-Purity Systems
FKM and specially cleaned VMQ options are designed for chemically aggressive environments and high-temperature conditions often found in semiconductor manufacturing. These materials ensure purity and durability in demanding miniaturized settings.
General Industrial Sealing
Applications include gearboxes, pumps, small flanges, and end-caps where available space is limited. Components often conform to AS568 standardization to ensure compatibility and reliable sealing performance in industrial machinery.
Rotary Seal Auxiliary Elements
Small 2-series O-rings serve as energizers and auxiliary sealing elements within certain PTFE rotary seal assemblies. They enhance the sealing effectiveness and longevity of rotary systems operating under varied conditions.
Customization:
Our Pulse Valve Diaphragm, branded Parker and model number 2-001, is a high-quality component designed to meet your specific needs. Originating from China and certified with CE, this product ensures reliability and compliance with international standards. We offer a minimum order quantity of just 1 piece, with pricing available upon negotiation to suit your budget.
The diaphragm is part of the AS568 2-Series and is made from premium materials including NBR, FKM, EPDM, and VMQ, available in hardness ratings of 70 and 90. It operates effectively within a temperature range of -55°C to +200°C (up to +232°C for VMQ) and maintains a tolerance of ±0.10 mm, ensuring precision and durability in your applications.
Packaging is carefully done in cartons to protect the product during shipping. We guarantee a supply ability of 5000 pieces per month, with a delivery time of 1-7 work days after payment. Payment terms are flexible and include T/T, Western Union, and PayPal for your convenience.
This Pulse Valve Diaphragm is ideal for use with QBY diaphragm pump systems, including QBY air diaphragm pump spare parts, making it a perfect replacement or upgrade component for your equipment. Trust Parker for quality and performance in every pulse valve diaphragm you require.
Support and Services:
Our Pulse Valve Diaphragm product is designed to deliver reliable performance and long service life in various industrial applications. For technical support, our team of experts is available to assist with installation, troubleshooting, and maintenance to ensure optimal functionality of your pulse valve diaphragm.
We provide comprehensive services including product selection guidance, custom solutions to meet specific operational requirements, and detailed technical documentation. Our support also covers replacement parts and repair services to minimize downtime and extend the lifespan of your equipment.
To maintain the efficiency and safety of your pulse valve diaphragm, we recommend regular inspection and timely replacement of worn components. Our customer service team can provide maintenance schedules and best practice advice tailored to your application.
Trust our technical support and services to maximize the performance and reliability of your pulse valve diaphragm, ensuring smooth operation in your dust collector or pneumatic conveying systems.
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