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Definitions of English terms for “components, tolerances, and fits” in rotary seal ring systems (Part 1): Professional terms related to rotary shaft lip seals (GB/T16593-1996 – Terms for rotary shaft lip seals), along with their English equivalents. These are explained in detail in five sections. Dongsheng Sealing Components provides information on the basic dimensions and tolerances of seal rings, sealing-related terminology, storage, maintenance, and installation of seal rings, methods for performance testing, as well as definitions of terms related to visual defects in seal rings and their corresponding English expressions. http://s7.sinaimg.cn/mw690/006889OSzy7av2JPg8ef6&690 http://s2.sinaimg.cn/mw690/006889OSzy7av2KbW1331&690 1. The English translation for the diameter of the inner hole in the chamber where the seal ring is located is: diameter, housing bore. Definition of terms related to seal rings: – 2. The English translation for the diameter of the inner part of the internal frame where the seal ring is located is: diameter, inside, inner case. Definition of terms related to seal rings: – 3. The English translation for the diameter of the inner part of the external frame where the seal ring is located is: diameter, inside, outer case. Definition of terms related to seal rings: – 4. The English translation for the diameter of the outside of the seal ring is: diameter, outside. This refers to the outer diameter of the seal ring when it is fitted with a frame, and usually denotes the diameter for press-fit purposes. 5. English translation for shaft diameter seal ring: diameter; term definition for shaft seal ring: the diameter of the shaft that comes into contact with the sealing lip. 6. The English translation for \"steel wire diameter seal ring\" is \"dimeter\”; the term \"wire seal ring\" refers to the inner diameter of the sealing lip as measured in its free state after the spring is installed. 7. English translation for inner diameter seal ring with spring-loaded lip: diameter, inside, lip, with spring. Definition of seal ring term: the inner diameter of the sealing lip as measured in its free state after the spring is installed. 8. Springless inner diameter seal ring for lips: Diameter inside, lip, without spring. Definition of this seal ring term: The inner diameter of the seal ring’s lip, measured in its free state, without a spring installed. 9. English translation for \"eccentricity of the housing bore seal ring\": Eccentricity refers to the radial distance at which the geometric center of the housing bore is displaced from the rotational axis. 10. English translation for shaft eccentricity seal ring: eccentricity. Term definition for shaft seal ring: the radial distance at which the geometric center of the shaft deviates from the line of rotation. 11. English translation for \"sealing edge sealing ring\": edge, sealing. Definition of the term \"sealing ring\": It is a part of the sealing lip; together with the sealing contact area, it forms the contact surface between the sealing ring and the shaft. 12. English translation for \"spring extension length seal ring\": extended length. Term definition for spring seal ring: the working circumference of the helical spring mounted on the shaft, together with the sealing lip. 13. English translation for the back surface of the sealing ring: extended length. Term definition for the spring sealing ring: the surface of the sealing ring that does not come into contact with the sealing fluid and is perpendicular to the axis. 14. English translation for the front surface of a sealing ring: face, front. Definition of the term “sealing ring surface”: the surface of the sealing ring that faces the sealing fluid. 15. English translation for \"sealing ring on the back surface of the sealing lip\": face, back, lip. Definition of sealing ring terms: The back surface of the inclined carrier of the sealing ring lip, with the minimum diameter of the carrier terminating at the edge of the sealing ring. For more professional questions regarding rotary seals, visit www.dshmf.com or search for #DongShengSeals# on WeChat to follow us @!