The cylinder ring products of Nirvana Machinery (Suzhou) Co., Ltd. are specially developed for the core sealing and transmission needs of compressors, covering two core categories: piston rings and rider rings. With precise design, diverse selection, and high-quality materials, they are suitable for various complex working conditions and provide reliable guarantees for the efficient and stable operation of compressors.
The core function of the product is outstanding, and the piston ring has the triple functions of sealing, reducing wear, and guiding. Through gas pressure difference, the gap between the piston and the cylinder is sealed to prevent high-pressure gas leakage and impurity intrusion, while reducing friction loss and ensuring stable piston movement trajectory; The rider ring focuses on guiding and protecting, avoiding direct contact between the piston and the cylinder liner, and extending the service life of the equipment.

In terms of product selection, the rider ring provides a wide range of types to adapt to different radial thicknesses and working conditions:

RA: Whole ring structure, with interference fit between the rider ring and the ring groove, to prevent the rider ring from detaching from the ring groove during the reciprocating process of the piston; It is generally suitable for use when the rider ring exceeds the cylinder wall mirror or the valve socket by more than 1/3.
RB: Single straight incision structure, compared to the original circular structure; Easy to install, suitable for situations with limited radial thickness.
RC: Single oblique incision structure, compared to the original circular structure; Easy to install, suitable for situations with limited radial thickness.
RD: Double straight incision structure, compared to the original circular shape; Easy to install, suitable for situations where the cylinder is small or the single cut form is not easy to install.
RE: Single oblique incision, with side and one-way pressure relief groove forms, with staggered arrangement of side and surface grooves to ensure the direction of airflow. During the reciprocating operation of the piston, the supporting ring rotates; Conventional circular shape.
RF: Double oblique incision, with side and one-way pressure relief groove forms, with staggered arrangement of side and surface grooves to ensure the direction of airflow. During the reciprocating operation of the piston, the rider ring rotates; Conventional circular shape.

Common Type Diagram

The product advantage comes from high-quality materials and customized design. The independently developed high-performance polymer formula, processed by European and American professionals, combines self-lubricating, high wear resistance, and high mechanical strength characteristics. It is suitable for various gases such as air, natural gas, hydrogen, and extreme temperature and pressure environments. There are also special materials such as 9E, 9K, 9B that accurately match different working conditions such as oil/oil-free, high and low pressure. The company can customize the design of product structure dimensions and complete selection verification based on compressor piston materials, gas types, temperature and pressure parameters, and other operating indicators to ensure compatibility and reliability.

Product Information

Product Customization