X-ring (also known as Quad-ring) is a type of sealing device that is designed to be an improved version of the traditional O-ring. It is made of elastomeric material shaped like a square cross-section with four lips that act as sealing surfaces. The x-ring provides benefits such as reduced friction, increased sealing ability, and longer service life compared to the traditional O-ring. The x-ring's four lip design helps to distribute pressure uniformly across the four sealing surfaces, reducing the chances of deformation and extrusion that can occur with O-ring seals. Additionally, the x-ring's design also helps to control the loss of lubricants or fluids and prevents ingression of contaminants. X-rings are commonly used in applications where better sealing performance is desired, such as in hydraulic systems, machinery, and automotive applications. They can be made from various elastomers such as Nitrile (NBR), Fluorocarbon (Viton), and Silicone.NBR (Nitrile Butadiene Rubber) X Rings are commonly used in static sealing applications thanks to their numerous features such as: 1. Excellent Oil Resistance: NBR X Rings are highly resistant to oils, making them ideal for use with petroleum-based fluids. 2. Good Chemical Resistance: They are also resistant to many acids, alkalis, and hydraulic fluids. 3. High-Temperature Rating: NBR X Rings are suitable for use in temperatures ranging from -40°C to 120°C. 4. Low Compression Set: They retain their original shape after compression, which helps maintain the seal's effectiveness. 5. Good Elasticity: NBR X Rings have good elasticity, which allows them to deform under pressure and then return to their original shape. 6. Durable: NBR X Rings are tough and durable, which makes them perfect for use in harsh environments. 7. Cost-Effective: They are cost-effective compared to other types of seals. Overall, NBR X Rings provide reliable sealing solutions for a wide range of applications.