Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of cs 2.65mm fluororubber o-ring for high vacuum in China, also supports customized service. Please feel free to buy high quality cs 2.65mm fluororubber o-ring for high vacuum for sale here from our factory.
CS 2.65mm Fluororubber O-ring for high vacuum
This high vacuum fluororubber O-ring is mainly made of FKM 75 material, which is a specially formulated high temperature resistant and corrosion-resistant fluororubber.
- Working temperature range: -20°C ~ +200°C.
- Good chemical resistance can resist the erosion of most acids, alkalis, and solvents.
- Excellent high vacuum sealing performance, leakage rate can reach below 10-10 Pa·m3/s.
- Excellent radiation resistance, suitable for high radiation environment.
Geometric dimensions
- The standard dimensions of O-rings have various specifications. According to different high vacuum gate valve models, the following common specifications can be provided:
- Inner diameter: 20mm, 25mm, 32mm, 40mm, etc.
- Cross-sectional diameter: 2.65mm, 3.53mm, 5.33mm, etc.
- All dimensions are precisely controlled according to international standard tolerances to ensure stable and reliable sealing performance.
Surface treatment
- To further improve the sealing performance, the surface of the O-ring is also treated as follows:
- Polishing, surface roughness Ra≤0.4μm
- Saponification treatment to improve wear resistance
- Special coating to reduce gas adsorption
Installation precautions
- The following points should be noted during installation:
- Check whether the sealing groove is clean and dry, without edges and corners
- Apply special fluorine grease or silicone oil appropriately
- Install slowly and evenly to avoid deformation
- Ensure the preload is appropriate, not too large or too small
| Material advantages | Fluororubber O-rings are suitable for high vacuum systems due to their excellent temperature resistance, chemical resistance, and low air permeability. They can withstand high-temperature baking of up to 250~300℃ and can work for a long time at 125℃ under pressure. |
| Design features | When designing, O-rings with smaller cross-sectional diameters should be used, and the sealing grooves should be designed to compress the two flanges and minimize the rubber area exposed to the vacuum side to improve the sealing performance. |
| Sealing performance | The compression of fluoro rubber O-rings is generally 30% of its cross-sectional diameter, the groove width is at least 1.4 times the cross-sectional diameter, and the inner diameter is slightly smaller than the inner diameter of the sealing groove to ensure that the rubber ring fits tightly against the sealing groove after assembly and has sufficient lateral deformation space. |
| Processing and assembly | The bottom surface angle of the sealing groove can be processed into a fillet with a radius equal to 1/5 of the cross-sectional diameter of the O-ring, the roughness of the sealing surface is at least 1.6μm (preferably 0.8μm), the outer edge chamfer is 0.13mm, and it needs to be trimmed to avoid scratching the O-ring during assembly. |
| Special types |
There are special types of fluororubber O-rings, such as PF80V FK5 non-marking fluororubber O-rings show good tolerance to various etching solutions and are suitable for special applications such as touch panel processes.
The recommended maximum continuous working temperature is 260°C, suitable for static and dynamic sealing in chemical wet processes. Fluororubber O-rings can be produced according to international standards such as AS568, JIS B2401, etc., and non-standard size customization services are also available.
Widely used in industries such as oil, gas, semiconductors, aviation, and chemicals, especially for semiconductor manufacturing applications that require high purity and low particle generation. |
| Temperature range | The recommended maximum continuous working temperature is 260°C, suitable for static and dynamic sealing in chemical wet processes. |
| Dimensions | Fluororubber O-rings can be produced according to international standards such as AS568, JIS B2401, etc., and non-standard size customization services are also available. |
| Application areas | Widely used in industries such as oil, gas, semiconductors, aviation, and chemicals, especially for semiconductor manufacturing applications that require high purity and low particle generation |
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