For over 50 years, the Parker O-Ring Handbook has been an engineering reference guide for engineers and sealing designers worldwide. Now, the Parker Hannifin Corporation is enhancing its commitment to premier customer service by launching an interactive, digital version of the handbook, known as the Parker O-Ring eHandbook. This new interactive reference guide is an improved version of the handbook, which was first published in 1957.
NBR
O-Rings are a common seal material used in many projects. They come in many different materials and can adapt to a variety of project applications. One of the world’s leading manufacturers of O-rings is Parker Hannifin. Their products are used across a wide range of industries. Here are some of their benefits:
Nitrile rubber O-rings, also known as Buna-N, are one of the most common types of sealing elastomers. They are composed of acrylonitrile and butadiene copolymers. Nitrile O-rings are sometimes available in metal detectable varieties. If you are concerned about exposure to light or ozone, you can purchase High-Visibility Nitrile O-rings. These O-rings are durable, yet retain the original compound’s properties. They also have a distinct neon green color.
The advantages of NBR are extensive and diverse. Many of the NBR materials used by Parker are certified to NSF 61. These are recognized for use in the United Kingdom, Germany, and North America. The American National Standards Institute recognizes NSF International and its qualifications for potable water components and delivery systems. The company’s engineers can assist in selecting the right compound for your needs. The benefits of NBR compound will exceed your expectations.
The material neoprene is a versatile, all-purpose elastomer. It has good resilience, is abrasion and flex-cracking-resistant, and is excellent for use in automotive and aerospace applications. Fluorocarbon, also known as viton, is a popular choice in o-rings. They combine high temperature and chemical resistance. In fact, some types of Parker FKM Viton O-Rings can withstand temperatures as low as -65°F and up to 450°F.
Nitrile
Parker O-Rings come in several varieties. The 70 and 90 durometers of Nitrile are the most common. Nitrile has excellent resistance to low-temperature conditions, but has poorer resistance to polar lubricants and fuels. Unlike Nitrile, however, these compounds do not degrade when exposed to oxygen or ozone. As a result, many seal professionals choose to use Buna-Nitrile as the elastomer of choice.
While most Parker O-Rings are made of nitrile, they are not suitable for all applications. Nitrile is a high-performance material with good resistance to mild acids, oxygenated solvents, and heat. However, it does not withstand hydrocarbon environments, so many engineers recommend a different compound for these environments. Nitrile-based Parker O-Rings can be customized to meet specific requirements for both performance and cost.
Polyurethane O-Rings are also available. This type of polymer is produced through the reaction of a diisocyanate with a polyol. They exhibit outstanding strength and permeation resistance. They are also available in standard sizes. The Resilon polyurethane is a proprietary formulation. This material is available in various standard sizes and offers high flexibility. It offers a robust seal, reducing downtime.
The N0674 Nitrile Parker O-Rings are 70-durometer general-purpose nitrile O-rings. They are UL-listed, Mil-G-21569), and N0674 sizes are the equivalent of the AS-568 offering. These nitrile Parker O-Rings offer a great balance between properties. However, they should not be exposed to ozone, sunlight, or high temperatures.
The NBR compounds are both manufactured from synthetic materials. The NBR content varies from 18% to 50%, with the higher the content, the better it will be for sealing and preventing leaks. However, the higher the Acrylonitrile content, the less desirable will be the properties of the compound. However, if you are unsure of which compound to select, Marco Rubber engineers are happy to help.
Praedifa Ultrathan
The high-temperature polyurethane O-ring, the Parker Praedifa Ultrathan(r) has the physical properties to perform in many applications. Its low thermal expansion coefficient and compression set make installation easier and decreases the required groove width. Also, its high mechanical resistance makes it ideal for applications where mechanical resistance is essential. Its rounded edges and virtually no tendency to twist make it an ideal choice for pneumatic valves.
The company is committed to the highest level of quality in its products. Its O-Ring division is capable of delivering a variety of sizes, materials, and compounds. The 74-page Sealing Guide outlines the company’s capabilities. Quality assurance programs and Controlled Batch Identification (CBI) programs are a priority. Parker O-Rings perform well in a variety of environments, including oil, water, and gas.
Choosing the right o-ring material for a specific application is easy with the Parker O Ring Handbook. This resource provides detailed specifications, o-ring sizes, and chord sizes in both metric and imperial standards. In addition, a handy reference guide provides tips for selecting the right material. A comprehensive resource for Parker O-Rings, this guide is a must-have for any automotive, motorcycle, or industrial application.
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Nitrile copolymer
Nitrile is a synthetic rubber with unique chemical resistance. Other materials react to oil and fuel, while nitrile remains unaffected by diluted acids. These qualities make nitrile/Buna-N O-rings an excellent choice for fueling systems in marine and automotive applications. Furthermore, nitrile/Buna-N O-rings offer high tensile strength, which makes them useful in the aerospace industry.
As a leading supplier of precision engineered o-rings, Parker has a vast selection to choose from. Not only does its inventory feature thousands of products, but it also has an expert team of applications engineers who can help you select the right o-ring for your application. As a Parker Authorized Distributor, Sealing Devices is committed to delivering the best quality products possible.
The FDA has strict requirements for the composition of critical medical seals. These compounds must be free of leachates and system toxicity. Additionally, they must be free of other hazardous materials. They must also meet strict requirements for food handling equipment. Parker materials meet these rigorous requirements. This is why they are a popular choice among many industries. If you need a seal, contact GFS today.
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