The O-circle is usually a circular molded elastomer with a circular cross-section. The O-ring can also be an indefinite rope (similar to a rubber band) and made of other materials such as plastic. According to the requirements of the application, they can be constructed to have unique cross sections, such as T, L, etc. O-circles are used to seal liquids and gases in both static and dynamic applications. The working principle of the silicone O-ring

O-ring seals are able to be sealed at relatively high pressure because they are compressed or " activated when pressurized, and when pressure is applied to the O-ring, it is deformed in the lid or groove. When the silicone O-ring forms between two flat and smooth surfaces, it presses into the lid wall and seals the joint. Compression powers the seal and creates a mechanical barrier preventing the fluid from passing; this constraint allows the silicone O-ring to be sealed at higher pressures than many flat washers.

The silicone O-ring O-ring press cover is the O-ring groove. The most common shape is the circular —— hence called the "O-ring". Standard circular O-circles are easily available from a variety of sources. Xiang Hong produces custom O-rings or pre-formed O-rings for non-standard lid configurations in OEM enclosures with tight corners or sealing grooves around the screw boss. Attempts to install standard circular O-rings into these types of custom housing can be very time consuming and the O-ring / seals fail due to distortion and inconsistent assembly practices during installation.

Xianghong uses liquid silicone injection molding technology, and uses liquid silicone rubber to produce silicone O-ring, and the hardness range is 10 70 Xiao's class A. Silicone is one of the few commercially available low hardness or soft hardness rubber compounds. The 30-hardness silicone O-rings controls well elongation and softness, while the softer 10 hardness O-rings and 20 hardness O-rings are easy to manufacture but should be handled with care as low hardness thin cross-section O-rings are easily stretched and mounted during use.

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