O-RINGS & X-RINGS
CTG’s experienced engineers will custom tailor a seal to fit your exact requirements, and manufacture 1 or 1,000 seals to your specifications that same day.
O-rings are sized to the SAE standard AS568, which is known as a dash number. Metric O-rings are sized to the actual measured inside diameter. Custom sizes can be developed to suit your applications.O-Rings PDF X-Rings PDF Request Quote
- High or low temperatures
- High or low pressures
- Static or dynamic systems
- Corrosive environments
Provide a simple and effective seal that can be used for thousands of applications. O-rings are manufactured in an array of materials to match any design needs.
Quad Seal (x-ring):
These can be used in a wide variety of static and dynamic sealing applications. Quad Seals should be used when seal life is important. Quad Seals allow for a narrower gland over standard O-rings. These are well suited for use on high pressure and pulsating pressure applications.
- Both types of seals provide a simple, inexpensive, and effective plug for many applications
- A wide variety of forms and sizes
- Fabricated from custom materials to meet the exact needs of the application
- X-rings are ideal for dynamic and extreme pressure applications
- O-rings with backup rings increase the effective pressure range of the O-ring
In dynamic applications, a seal can also fail by abrasion against the walls of the gland. In such situations, the walls should be polished to prolong the life of the seal.
为了为最大密封寿命，必须从正确的弹性体中构建密封件。CTG可以从耐受高温或低温，高压或低压，动态应用和腐蚀性环境的弹性体中建立密封。如果您不确定哪种材料最好，请问我们 - 我们可以帮助您为您的情况选择正确的材料。
Request a quoteFor emergency needs, 24/7 delivery is also available
The following table details the materials that are commonly used to construct our O-rings and X-rings. Customers sometimes ask about seals made from other materials. We can do that, too. Let us know the dimensions of the O-ring or X-ring that you need, and we will have your seals ready within a day.
|Material||Temperature Range(°F)*||Comments and Typical Uses|
|Nitrile (Buna-N, NBR)||-20 to 212||Highly resistant to abrasion and tearing.
Nitrile is the most commonly used elastomer for sealing applications,
and it is the material of choice for petroleum applications.
|Hydrogenated nitrile (HNBR)||-20 to 300||Compared to nitrile, HNBR has better chemical resistance, better heat
resistance, and better resistance to seal extrusion.
|-60 to 250||Very resistant to ozone.|
|-40 to 250||Resists both weathering and exposure to petroleum oils|
|Butyl (isobutylene, IIR)||-50 to 250||Extremely low gas permeability; resists a diverse range of chemicals.
Useful in applications requiring an air-tight seal.
|Viton® (fluorocarbon, fluoroelastomer)||-15 to 400||Better resistance to chemicals and high temperatures than most
|Silicone (VMQ, PVMQ)||-150 to 400||Excellent tolerance for temperature extremes, and high resistance to
|Fluorosilicone (FVMQ, FK)||-75 to 400||Tolerant to temperature extremes, and resists degradation by fuel and oils.
Primarily used where resistance to hot, dry conditions is required.
|FFKM (perfluoroelastomer)||-15年到600年||Highly resistant to many chemicals, and outstanding resistance to
|PTFE||-400 to 450||Highly resistant to many chemicals, and can function over a very wide
temperature range. Also resists weathering.
* Temperature ranges given here are approximate; the values relevant to any particular situation depend upon the application. If in doubt, ask us—we will help you design an O-ring or X-ring to meet the temperature tolerance needs of your system.