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ring Product List

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O-Ring Comprehensive Catalog [Featuring a wide variety of O-Rings that are easy to install and structure!]

O-Ring Comprehensive Catalog [Featuring a wide variety of O-Rings that are easy to install and structure!]

[Sample available] "O-ring Comprehensive Catalog" is being offered for free! It features a wide variety of O-rings that can be easily attached and detached and can withstand a wide range of temperatures!

The "R.Echo-Oring Product Catalog" is the product catalog of Masuoka Tokyo Co., Ltd., which mainly deals with O-rings and industrial machine parts. With a wide variety of materials available, you can also find the seals you are looking for. 【Contents】 ■ Features and sealing principles of R.Echo-Oring ■ How to use O-rings ■ Handling and storage precautions for O-rings ■ Materials for R.Echo-Oring ■ Properties and applications of general rubber ■ Standard values and property values of materials for R.Echo-Oring ■ O-ring dimension table ■ Ultra-high-performance fluororubber Echo Bar Flow ■ Vacuum sealing products *For details, please request the materials or view the PDF data from the download.

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O-ring "Characteristics and Sealing Principle"

O-ring "Characteristics and Sealing Principle"

[Sample available] Explaining the characteristics of O-rings and the principle of sealing.

O-rings are compressed when installed in a groove because the depth of the groove is smaller than the thickness of the O-ring. This amount of compression is called "crush white." At low pressure, the sealing action is performed by the rubber elasticity of the O-ring. When hydraulic pressure is applied from one side, a reaction force greater than the applied hydraulic pressure occurs. This is referred to as the O-ring's self-sealing action. 【Features】 ■ Small volume at the installation part ■ Simple structure, easy to install and remove ■ A wide variety of materials available, usable over a broad temperature range ■ Can effectively seal under alternating pressure from both sides ■ More economical compared to other packings ■ Abundant stock for quick delivery *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *Product documentation can be viewed from the [Download] section.

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O-ring "Required Rubber Properties"

O-ring "Required Rubber Properties"

[Sample available] This explains the rubber properties required for O-rings.

The necessary rubber properties for O-rings are excellent elasticity, good compression set resistance, high abrasion resistance, superior heat resistance, and a long lifespan without being affected by the applicable liquids or gases. They need to be selected according to each application. 【Features】 ■ Excellent elasticity and heat resistance ■ Good compression set resistance ■ High abrasion resistance and long lifespan *Samples are available. If you would like a sample, please apply through the [Contact Us] section. *You can view the product documentation from [Download].

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O-ring "How to Use Backup Rings"

O-ring "How to Use Backup Rings"

"Sample available" explains the use of backup rings.

The hardness of O-rings comes in type A durometer hardness Hs70 and Hs90, with Hs90 being specified for general high-pressure use. However, Hs70 can also be used for the same high-pressure applications with the use of backup rings. At high pressure, there can be protrusion from the gap in the shaft. This protrusion is determined by the hardness of the O-ring, the gap between components, and the pressure. Even in low-pressure situations where protrusion is not an issue, it helps prevent accidents such as fraying and twisting damage, which account for the majority of O-ring failures, thus extending the lifespan of the O-ring. 【Product Naming (Example)】 The naming of backup rings consists of the standard number or standard name, type symbol, and the O-ring call number. ■ Spiral JISB2401-4 (Standard Number), T1 (Type Symbol), P20 (Ring Call Number) ■ Bias Cut JISB2401-4 (Standard Number), T2 (Type Symbol), P20 (Ring Call Number) ■ Bias Cut JISB2401-4 (Standard Number), T3 (Type Symbol), P20 (Ring Call Number) *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section.

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X-ring: Enhances the sealing effect in areas that cannot be sealed by O-rings!

X-ring: Enhances the sealing effect in areas that cannot be sealed by O-rings!

[Sample available] Ensure a reliable seal with the reaction surface pressure and fluid pressure during installation!

The KS-X ring is composed of a lip seal with an X-shaped cross-section and can be used and handled almost like an O-ring. The KS-X ring has superior characteristics compared to conventional O-rings. 【Features】 ■ No possibility of twisting ■ Low friction and long lifespan ■ Excellent sealing performance ■ No sealing defects due to molding ■ Abundant materials ■ Wide range of sizes *Samples are available. If you would like a sample, please apply through the [Contact Us] section. *You can view the product documentation in the [Download] section.

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O-ring "The Relationship Between Crushing White and Crushing Force"

O-ring "The Relationship Between Crushing White and Crushing Force"

[Sample available] This explains the relationship between the crushing of O-rings and the crushing force.

We introduce the relationship between the crushing of O-rings and crushing force using graphs on our company website's "O-Ring Guide." [List of graphs introduced on the website] ■ Hardness (Shore A) 50 ■ Hardness (Shore A) 60 ■ Hardness (Shore A) 70 ■ Hardness (Shore A) 80 ■ Hardness (Shore A) 90 *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *You can view the product documentation from [Download].

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GT Jacket O-Ring with chemical resistance and elasticity.

GT Jacket O-Ring with chemical resistance and elasticity.

Sample available: O-rings that combine the elasticity of rubber with the chemical resistance of fluororesin!

The GT jacket O-ring is an O-ring that is completely coated with fluororesin using fluororubber or silicone rubber, combining the elasticity of rubber with the chemical resistance of fluororesin. It is available in standard sizes such as JIS and AS568A, as well as special dimensions ranging from an inner diameter of 6.1mm to 3,568mm. 【Features】 ■ High chemical resistance ■ Wide range of dimensions ■ Wide operating temperature range ■ Smooth and seamless joints ■ Tough and excellent electrical insulation *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *Product documentation can be viewed from the [Download] section.

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O-ring "Material Properties and Applications"

O-ring "Material Properties and Applications"

[Sample available] This explains the material properties and applications of O-rings made from natural rubber and synthetic natural rubber.

The resistances in the table are primarily characteristics due to the polymer and may vary depending on the formulation. Please confirm through actual machine tests before use. 【Types of Rubber and Their Characteristics】 ■ Natural Rubber: Has elasticity and good mechanical properties such as abrasion resistance. ■ Synthetic Natural Rubber: Almost the same properties as natural rubber. ■ Styrene Rubber: Good abrasion resistance and aging resistance, and is inexpensive. ■ Butadiene Rubber: Has good elasticity and excellent abrasion resistance. ■ Chloroprene Rubber: Has average properties such as weather resistance, ozone resistance, heat resistance, and chemical resistance. ■ Butyl Rubber: Has good weather resistance, ozone resistance, and gas permeability, and is resistant to polar solvents. *Samples are available upon request. If you would like a sample, please apply through [Contact Us]. *Product documentation can be viewed from [Download].

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O-ring "Groove Design"

O-ring "Groove Design"

Explaining the use of Tsubushi Shiro, gaps, and backup rings is possible with sample provision.

■Tsubushi Shiro When using O-rings for motion, Tsubushi Shiro significantly affects sealing effectiveness, dynamic resistance, and compression set, so it must be kept to a minimum. In cases of high speed or poor lubrication conditions, please make Tsubushi Shiro even smaller than standard motion O-rings. ■Gap At high pressure, gaps between the piston and cylinder, as well as between the rod and sleeve, can cause extrusion, leading to damage. This gap should be designed to be as small as possible. The use of backup rings is effective in preventing extrusion. ■Use of Backup Rings When pressure is applied from both sides, install backup rings on both sides of the O-ring. When pressure is applied from one direction, install one backup ring on the side opposite the pressure. If there is enough space, it is recommended to use two backup rings even for unidirectional pressure. *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *Product documentation can be viewed from the [Download] section.

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[Explanation] Examples of O-ring malfunctions and their countermeasures

[Explanation] Examples of O-ring malfunctions and their countermeasures

Possible sample provided: Explaining examples of O-ring defects and their countermeasures.

Name: We will introduce examples in the order of phenomenon, cause, and countermeasure. ■ Swelling: The rubber becomes soft, and the O-ring increases in size overall. The fluid used penetrates the rubber material → Change to a suitable rubber material. ■ Extraction: The rubber becomes hard, and the O-ring decreases in size overall. The plasticizer contained in the rubber material is extracted by the fluid used → Change to a suitable rubber material. ■ Permanent deformation: The O-ring is crushed and does not return to its original shape. The operating temperature is too high / The crush depth is too large → Change to a rubber material with good heat resistance / Review the groove dimensions or O-ring dimensions. ■ Overhang: The O-ring is torn either completely around or partially. It overhangs the gap between the groove and the mating surface and tears at the edge of the groove → Reduce the gap with the groove / Use a high-hardness O-ring or combine with a backup ring, etc. * Samples are available upon request. If you would like a sample, please apply through [Contact Us]. * Product documentation can be viewed from [Download].

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Explanation of handling and storage precautions for O-rings.

Explanation of handling and storage precautions for O-rings.

Are you having trouble with the handling and storage methods of O-rings? Sample provision available.

Please install it to avoid twisting, and apply sufficient grease or sealing liquid to the groove. As a general rule, do not reuse. Additionally, if you need to clean it with a cleaning solution after installation, please confirm compatibility with the materials before proceeding. Some materials may produce harmful gases when burned, so do not dispose of them by incineration. 【Storage Precautions】 ■ Store in a place away from direct sunlight and with low humidity. ■ Do not open until just before use. ■ Store in a place that does not become high in temperature and has little air circulation. ■ Store in a way that does not put pressure on the O-ring. ■ Do not hang, as local deformation may occur. ■ Store in a place with little dust and take care to avoid oil adhesion. *Samples are available upon request. If you would like a sample, please apply through the [Contact Us] section. *You can view the product handling materials from the [Download] section.

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