Product Description:
The Parker AS568 2-Series O-Rings, encompassing sizes 2-001 through 2-050, are miniature sealing rings precisely molded from elastomeric materials. They feature a consistent cross-sectional thickness of 0.070 inches (1.78 mm). These small-diameter O-rings conform to the AS568A dimensional standards and are offered in four distinct high-performance polymer categories: NBR (nitrile), FKM (fluorocarbon), EPDM (ethylene propylene), and VMQ (silicone). Each material type is specifically designed to meet unique fluid compatibility, temperature ranges, and environmental conditions.
Designed specifically for applications with limited space and low to medium pressure requirements, the 2-Series O-Rings excel in both static and mildly dynamic sealing scenarios. Their inside diameters vary from 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 represents the smallest standard sizes in the AS568 series, making these O-rings an ideal solution for sensors, small fittings, miniature valves, analytical instruments, as well as compact pneumatic and hydraulic components.
Depending on the application demands, Parker’s 2-Series offers options tailored to specific performance needs. For resistance to oils, NBR is recommended; for exceptional chemical and temperature stability, FKM is suitable; EPDM provides excellent resistance to hot water, steam, and weathering; while VMQ offers wide temperature flexibility combined with physiological inertness. Overall, the Parker 2-Series O-Rings provide a reliable, ready-to-use sealing solution that benefits from consistent compound quality and worldwide availability.
Features:
The AS568A standard ensures dimensional compliance, making these O-rings fully interchangeable with standard aerospace and industrial grooves. This compatibility simplifies the process of selecting O-rings for various applications requiring strict adherence to recognized dimensions.
When it comes to material options, there are four elastomer types available to suit different operating environments. NBR provides general-purpose oil resistance, while FKM is ideal for high-temperature conditions and aggressive chemical exposure. EPDM is well-suited for steam, water, brake fluids, and weather resistance, and VMQ offers a wide temperature range coupled with physiological inertness.
These O-rings feature a miniature cross-section with a cord diameter of 1.78 mm (± 0.08 mm), allowing them to effectively seal within extremely tight radial and axial spaces. This small size makes them highly versatile for compact assemblies where space constraints are critical.
The inside diameter of these O-rings ranges from 0.74 mm (size 2-001) up to 75.92 mm (size 2-050), covering the entire small-size spectrum of the AS568 2-series. This wide range ensures that designers can find the right size for diverse small-scale sealing applications.
Common durometer ratings available include 70 Shore A, 75 Shore A, and 90 Shore A, with availability depending on the specific compound and size chosen. This range of hardness allows for tailored performance characteristics to meet seal longevity and flexibility requirements.
To guarantee quality, these O-rings are manufactured under Parker’s Controlled Batch Identification (CBI) system and conform to MIL-STD-413C visual acceptance standards where applicable. This high-quality molding process ensures reliability and traceability across production batches.
The materials provide broad chemical compatibility, each exhibiting distinct resistance profiles. For optimal performance, detailed material selection guidance is provided in the accompanying specification table, helping users to choose the best elastomer for their chemical environment.
Technical Parameters:
| Cross-Section (inch) |
0.040 |
| Temperature Range (NBR) |
-34°C To +121°C |
| Temperature Range (EPDM) |
-57°C To +150°C |
| Temperature Range (FKM) |
-25°C To +200°C |
| Temperature Range (VMQ) |
-55°C To +200°C (up To +232°C) |
| Tolerance (mm) |
±0.10 |
| Material |
NBR, FKM, EPDM, VMQ |
| Inside Diameter (inch) |
0.029 To 5.239 |
| Hardness |
70 / 90 |
| Series |
AS568 2-Series |
Applications:
Precision instruments and sensors often require specialized components such as small ports, transducer housings, and enclosures for analytical devices. These elements are critical for ensuring accurate measurements and reliable performance in various applications.
In the realm of miniature pneumatic and hydraulic systems, compact cylinders, small-bore actuators, valve bodies, and fitting seals play a vital role. Their compact design allows for efficient operation within limited spaces, enhancing system functionality and responsiveness.
The automotive and transportation sectors utilize various components like fuel system parts, small fluid connectors, sensor seals, and brake system sub-assemblies. Specifically, EPDM materials are chosen for their compatibility with glycol-based fluids, ensuring durability and safety.
Medical and life-science devices benefit from VMQ grades that comply with FDA and USP Class VI standards. These materials are especially suitable for fluid-path seals used in diagnostic tools and laboratory equipment, providing both reliability and compliance with health regulations.
In food and beverage processing, EPDM and VMQ compounds are tailored to meet compliance requirements for potable water and food-contact areas. This ensures that the materials used are safe and hygienic for handling consumable products.
Semiconductor manufacturing and high-purity systems demand FKM and specially cleaned VMQ options. These materials are designed to withstand chemically aggressive environments and high temperatures within miniature settings, maintaining system integrity.
General industrial sealing applications include use in gearboxes, pumps, small flanges, and end-caps where space constraints exist. Components adhering to AS568 standards provide standardized and reliable sealing solutions in such environments.
Rotary seal auxiliary elements often involve small 2-series O-rings, which function as energizers or auxiliary sealing components in specific PTFE rotary seal assemblies. Their precise design contributes to the overall efficacy and longevity of the sealing system.
Customization:
Introducing the Parker Pulse Valve Diaphragm, model number 2-001, manufactured in China and certified with CE standards. This product is an essential component for QBY air diaphragm pump spare parts, ensuring optimal performance and durability.
We offer product customization services tailored to meet your specific requirements. The diaphragm is available with a temperature range of -34°C to +121°C for NBR material and -25°C to +200°C for FKM, with a hardness rating of 70 or 90. It features an inside diameter ranging from 0.029 to 5.239 inches with a tolerance of ±0.10 mm, making it perfectly compatible with various QBY air diaphragm pump spare parts.
Our minimum order quantity is just 1 piece, with a supply ability of 5000 pieces per month. Pricing is negotiable to suit your budget, and we ensure secure packaging in cartons. Delivery time is prompt, ranging from 1 to 7 workdays after payment. We accept multiple payment terms including T/T, Western Union, and PayPal.
Choose Parker Pulse Valve Diaphragm for reliable and customized solutions in QBY air diaphragm pump spare parts, enhancing your equipment’s efficiency and lifespan.
Support and Services:
Our Pulse Valve Diaphragm is engineered for durability and optimal performance in demanding industrial environments. To ensure reliable operation, regular inspection and maintenance are recommended. Replace the diaphragm immediately if signs of wear, cracking, or deformation are observed.
Installation should be performed by qualified personnel following the product manual to avoid damage and ensure a proper seal. Use only genuine replacement parts to maintain product integrity and warranty coverage.
For troubleshooting, common issues such as air leakage, reduced pulse efficiency, or valve malfunction can often be resolved by cleaning or replacing the diaphragm. Avoid exposure to extreme temperatures or corrosive substances beyond the diaphragm’s specified limits.
Technical support is available to assist with installation guidance, maintenance procedures, and troubleshooting tips. Comprehensive service plans can be tailored to your operational needs to maximize the lifespan and performance of your pulse valve system.
Your message must be between 20-3,000 characters!
