Compared with other types of sealing rings, rubber O-rings have the following advantages
1, suitable for a variety of sealing forms: static sealing, dynamic sealing,
Suitable for various applications. The dimensions and grooves are standardized and highly interchangeable.
2. Suitable for a variety of motion modes: rotary motion, axial reciprocating motion or combined motion (such as rotary reciprocating combined motion)
3. Suitable for many different sealing media: oil, water, gas, chemical media or other mixed media
Through the selection of suitable rubber materials and appropriate formula design, it can effectively seal oil, water, air, gas and various chemical media. Wide temperature range (－ 60 ℃ ～ + 220 ℃), and pressure can reach 1500Kg / cm2 (fixed with reinforcement ring) when fixed use.
4.Simple design, compact structure, convenient assembly and disassembly
The structure of the rubber O-ring section is relatively simple, and it has a self-sealing effect, and the sealing performance is reliable. Because the rubber O-ring itself and the structure of the installation site are relatively simple and standardized, installation and replacement are easy.
5. Many kinds of materials
Can be selected according to different fluids: NBR, FKM, SIL, EPDM, Neoprene (CR), Natural Rubber (NR) hydrogenated Butadiene rubber (HNBR), butyl rubber (IIR), silicone fluorine rubber (FLS), etc.
The choice of rubber O-ring hardness is more important. For example, if the hardness of a pump's water turbine sealing ring is 70 (Shore), the sealing ring often peels off or even cuts off horizontally. After that, a 85 to 90 (Shore) sealing ring is used, which is ideal.
Low hardness, easy installation, but easy to peel off, installation damage, extrusion and even pressure. The hardness is too high and the installation is inconvenient.