Best Lab Gaskets & O-Rings of 2025

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Lab gaskets and O-rings are essential components used in laboratory equipment to prevent leaks and ensure that experiments are carried out safely and accurately. These products are made from a range of materials, including silicone, Viton, and EPDM, which offer excellent resistance to chemicals, high temperatures, and pressure. Lab gaskets and O-rings are widely used in various laboratory applications, such as chemical processing, pharmaceuticals, and biotechnology. Proper selection and installation of these products can help to reduce the risk of equipment failure and improve the overall efficiency of laboratory operations.
At a Glance: Our Top Picks
Top 10 Lab Gaskets & O-Rings
sourcingmap Silicone O-Ring for Various Applications
The sourcingmap Silicone O-Ring is designed with a 110mm outside diameter and a 103.8mm inner diameter, making it suitable for various applications. With a hardness of 50 Durometer, it offers excellent resistance to penetration, ensuring durability. This standard silicone O-Ring can withstand temperatures from -22℉ (-30℃) to 392℉ (200℃), providing versatility in extreme conditions. You can use this O-Ring in travel mug lids or espresso coffee makers, making it convenient for daily use.
Nitrile Rubber O-Ring Cord - 7mm Diameter
The Nitrile O-Ring Cord is a versatile sealing solution that caters to a wide range of needs. Made from 70° Shore A nitrile rubber, it offers excellent resistance to water, oil, and fuel, making it ideal for various applications. With a temperature range of -30 to +100°C, you can rely on it in both cold and hot environments. This product is perfect for custom O-ring seal making, allowing you to create seals that fit your specific requirements with ease.
Sourcingmap Silicone O-Ring Pack of 10
The Sourcingmap O-Ring Set features a 50mm outside diameter and a 44mm inner diameter, making it ideal for various applications. With a hardness of 50 Durometer, these rings resist penetration, ensuring durability and reliability. Made from standard silicone (VMQ), the rings can withstand a wide temperature range from -22℉ (-30℃) to 392℉ (200℃), providing versatility in different conditions. This set is perfect for sealing in travel mugs, espresso machines, and more, giving you peace of mind in everyday use.
NS-RC4NA-14 Remote Control for Insignia TVs
The NS-RC4NA-14 Remote Control is designed to work seamlessly with various Insignia TV models. You will find it incredibly convenient as it requires no programming—simply install new alkaline batteries and you're ready to go. Made of durable ABS material, this remote is built to last, ensuring you have a reliable device for your entertainment needs. Furthermore, each unit undergoes 100% inspection before delivery, so you can trust in its quality.
sourcingmap Nitrile Rubber O-Rings Pack of 20
The sourcingmap O-Rings offer a convenient sealing solution with their precise dimensions of 13mm outer diameter and 10mm inner diameter, making them suitable for a variety of applications. With a hardness rating of 70A, they resist penetration, ensuring durability and reliability. Made from standard nitrile rubber, these O-rings can withstand temperatures ranging from -20°C to 100°C, allowing you to use them in various environments. Their versatility makes them perfect for use in pressure washers, plumbing pipes, and mechanical maintenance, providing you with peace of mind in your projects.
sourcingmap Nitrile Rubber O-Rings Pack of 50
The sourcingmap O-Rings are designed with a 17mm outside diameter and an 11mm inner diameter, ensuring a perfect fit for various applications. With a hardness of 70A Durometer, these O-rings provide excellent resistance to penetration, making them durable and reliable. Made from standard Nitrile Butadiene Rubber, they can withstand temperatures ranging from -4℉ to 212℉, offering versatility for both hot and cold environments. These O-rings are widely used in pressure washers, pumps, and plumbing, ensuring effective sealing and preventing leaks, which ultimately saves you time and money.
sourcing map Nitrile Rubber O-Rings 28mm OD
The Nitrile Rubber O-Rings are designed with a 28mm outside diameter and a 25mm inner diameter, making them suitable for a range of applications. With a hardness rating of 70A Durometer, these rings offer excellent resistance to penetration, ensuring durability. Made from standard Nitrile Butadiene Rubber, they can withstand temperatures from -20°C to 100°C, providing versatility in various environments. These O-Rings are ideal for use in pressure washers, pumps, and plumbing, offering you reliable sealing solutions for your projects.
sourcingmap Nitrile Rubber O-Rings Pack of 10
The sourcingmap O-Rings are designed with a 17mm outside diameter and 14mm inner diameter, making them ideal for various sealing applications. With a hardness rating of 70A durometer, they provide excellent resistance to penetration, ensuring durability. Made from standard nitrile rubber, these O-Rings can withstand temperatures ranging from -4℉ (-20°C) to 212℉ (100°C), offering versatility for different environments. This makes them perfect for use in pressure washers, filters, and plumbing, giving you reliable performance and peace of mind in your projects.
sourcingmap NBR Rubber Sealing Ring 20Pcs
The sourcingmap Rubber O Ring is designed for effective sealing in various applications. With an inner diameter of 11.2mm and a thickness of 1.8mm, it provides a reliable fit, ensuring that you can prevent leaks in your projects. Made from oil-resistant NBR rubber, these rings are durable and suitable for a range of environments. Each package contains 20 pieces, offering great value for your needs. You can trust this sealing solution to enhance the performance and longevity of your equipment.
10 Pcs Red Silicone O Ring Seals
The Red Silicone O Rings are made of durable silicone, ensuring long-lasting performance. With an outside diameter of 20mm and an inner diameter of 16mm, these rings provide a secure fit for various applications. The 2mm thickness offers excellent sealing capabilities, making them ideal for preventing leaks. Weighing just 3g, they are lightweight and easy to handle, adding convenience to your projects.
Frequently Asked Questions (FAQs)
1. Are O rings and gaskets the same?
O-rings are circular, ring-shaped pieces that sit in a groove between two (usually cylindrical) parts. ... Terminology note: Any o-ring can technically be called a gasket since they prevent the transfer of liquid and air, but while o-rings are a specific shape of gasket, any gasket cannot be called an o-ring.
2. Which is better o ring or gasket?
When deciding whether a gasket or O-ring is best for your application, consider the environment and function of the seal. ... While both can withstand a wide range of temperatures, gaskets are best for extreme temperature situations. However, O-rings perform better than gaskets in applications with extreme pressure.
3. What is the role of the o ring?
The function of O rings is to seal a joining of two pieces to ensure that no air, gas or liquid can pass. Typically, they are fitted into a groove and designed to resist pressure. The resistance is what prevents air or liquid from escaping or entering the joining.
During our lab gaskets & o-ring research, we found 13 lab gaskets & o-ring products and shortlisted 10 quality products. We collected and analyzed 3,671 customer reviews through our big data system to write the lab gaskets & o-rings list. We found that most customers choose lab gaskets & o-rings with an average price of £5.99.
The lab gaskets & o-rings are available for purchase. We have researched hundreds of brands and picked the top brands of lab gaskets & o-rings, including Uxcell, Camthorne, PERFASCIN. The seller of top 1 product has received honest feedback from 20,029 consumers with an average rating of 4.8.

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