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O-ring

O-ring, NBR lower than 68 Sh

O-ring, NBR lower than 68 Sh

O-ring from NBR rubber, lower than 68 Sh NBR (nitrile butadiene rubber) O-rings are among the most popular sealing solutions,...

 O-ring, NBR 70-75 Sh

O-ring, NBR 70-75 Sh

O-ring from NBR rubber, 70-75 Sh NBR (nitrile butadiene rubber) O-rings are reliable sealing solutions widely used in various...

 O-ring, NBR 80-85 Sh

O-ring, NBR 80-85 Sh

O-ring from NBR rubber, 80-85 Sh NBR (nitrile butadiene rubber) O-rings with a hardness of 80-85 Shore A (Sh) provide medium-...

 O-ring, NBR 88-90 Sh

O-ring, NBR 88-90 Sh

O-ring from NBR rubber, 88-90 Sh NBR (nitrile butadiene rubber) O-rings with a hardness of 88-90 Shore A (Sh) are extremely h...

 O-ring, FKM (FPM, Viton)

O-ring, FKM (FPM, Viton)

O-ring, FKM (FPM, Viton) rubber FKM O-rings (fluoroelastomer, commonly known as Viton) are among the highest-performing seali...

 O-ring, Silicone (MVQ, VMQ)

O-ring, Silicone (MVQ, VMQ)

O-ring, Silicone (MVQ, VMQ) rubber Silicone O-rings (MVQ, VMQ) are a specialized and widely used sealing solution in sealing ...

 O-ring, EPDM

O-ring, EPDM

O-ring from EPDM rubber EPDM O-rings (ethylene propylene diene rubber) are one of the most reliable and versatile sealing cho...

 O-ring, other material (HNBR, FFPM, FEP/MVQ)

O-ring, other material (HNBR, FFPM, FEP/MVQ)

O-ring from other materials (HNBR, FFPM, FEP/MVQ) O-rings made from special materials such as HNBR (Hydrogenated Nitrile Rubb...

 O-ring set box, O-ring splice kit

O-ring set box, O-ring splice kit

O-ring set box, O-ring splice kit O-Ring Kit The O-ring kit includes a wide range of O-rings in different sizes, making it...

O-Rings

NBR, FKM (FPM, Viton), Silicone (MVQ, VMQ), EPDM, PTFE O-rings are available with various coatings (FEP encapsulled, PTFE, peroxide, Molycote) and FDA-compliant versions for food industry applications.

What is an O-Ring?

An O-ring is a simple yet highly effective static sealing device widely used in various industrial and mechanical applications. It is a circular cross-section ring made of flexible rubber or synthetic material, ensuring a tight seal at connection points to prevent leakage of fluids, gases, or dust.

Key Features of O-Rings

  • Flexibility
    O-rings easily adapt to mating surfaces, ensuring a secure seal even under changing environmental conditions.

  • Wide Range of Materials
    Available in different materials such as nitrile (NBR), fluoro rubber (FKM), silicone (MVQ), and EPDM, offering various temperature and chemical resistance properties.

  • Easy Installation
    The simple shape and flexibility make installation and maintenance easy, reducing operational costs.

Applications of O-Rings

O-rings are used in hydraulic and pneumatic systems, the automotive industry, food processing, pharmaceuticals, and many other industrial environments.

Technical Summary of O-Rings

 

DIMENSIONING

 

Typical dimensions:
d1 = inner diameter
d2 = cord diameter
 
Rule of dimensioning: d1 x d2
 
Important abbreviations:
FDA – applicable in food industry (fulfillment for regulation of FDA – Food and Drug Administration)
FEP – FEP (fluoroethylene propylene) encapsulated
 
 

APPLICATION AREA

 
O-rings are widely used sealing elements employed in various industries to solve multiple sealing and insulating tasks. These rings are designed in an oval shape and are typically made of NBR, HNBR, EPDM rubber, neoprene (CR), fluoro-rubber (FKM, FPM, Viton), silicone (MVQ, VMQ), PTFE or other rubber-based materials. O-rings find applications in several areas, including:
 

Hydraulics and Pneumatics

O-rings are commonly used in hydraulic and pneumatic systems. They help eliminate fluid or gas leakage at connections, contributing to system efficiency and reliability.
 

Automotive and Mechanical Industry

In the automotive sector, O-rings play a crucial role in engines, transmissions, and other components. They ensure the sealing of oil and other fluids, thus enhancing the efficiency of vehicles. 
 

Food Industry

In the food industry, O-rings are employed in applications where sealing and hygiene are critical. They are used for handling compressed air and gases and in food processing machinery. The FDA means in product name the fulfillment for regulation of Food and Drug Administration and this products are surely applicable in food industry.
 

Electronics

O-rings are also used in the manufacturing of electronic devices and equipment. These sealing elements help prevent dust, water, and other contaminants from entering around electronic components.
 

Oil and Gas Industry

O-rings have a significant role in the oil and gas sector during drilling and transportation processes. They prevent oil and gas leakage at pipe connections and valves.
 
O-rings offer several advantages, such as excellent wear resistance, chemical resistance, and the ability to function over a wide temperature range. Material selection is a crucial factor in meeting the specific requirements of a given application.
In conclusion, O-rings can be used to address a wide range of technical challenges, and they are indispensable in various industries for sealing and insulation purposes. It is essential to choose the appropriate material and size for the specific application to ensure reliable and efficient operation.
 
 

COATED and ENCAPSULATED O-RINGS

 
Coated O-rings are sealing elements equipped with special coatings to enhance their sealing and insulating properties. Here are some examples of coatings and their properties:
 

PTFE (Polytetrafluoroethylene) Coating

Properties: Excellent low-friction characteristics, outstanding chemical resistance, high-temperature tolerance.
Example Application: Hydraulic systems handling aggressive fluids.
 

Silicone Coating

Properties: Excellent flexibility, low wear, good temperature resistance.
Example Application: Food industry applications where hygiene and sealing are critical.
 

Peroxide Coating

Properties: Good chemical resistance, suitability for sterilization.
Example Application: Medical devices and pharmaceuticals in sterile environments.
 

FEP (Fluorinated Ethylene Propylene) Encapsulating

It is important to distinguish that in this case we are not talking about a coating produced by layer formation. The O-ring gets a FEP tube. cover. Properties: Excellent non-adhesive characteristics, high-temperature resistance, good electrical properties.
Example Application: Chemical industry applications where exposure to aggressive chemicals is a concern.
 

Molykote Coating

Properties: Excellent lubrication, low friction, wear resistance.
Example Application: Machinery manufacturing and automotive industry, where minimizing friction is important.
 
These coatings address various environmental and application requirements, improving the performance of O-rings in specific tasks. It's essential to select the appropriate coating and O-ring material for the best results in your application.
 
 
 

TECHNICAL GUIDES

 

The KTT tolerance table helps You in size selection

 
Tolerance table for o-rings
 

Material selection guide

 
Rubber materials
 

Introduction of elastomers

 
Elastomers

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