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Maryland Metrics: Technical Data Chart
   
JIS SS standard o-ring size listing
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Other sizes are also available but are not included in this listing. Please inquire.
SS standard number Cord diameter (thickness) Inner diameter Outer diameter
  W ID OD
SS-005 1.0±0.05 0.5±0.10 2.5
SS-008 1.0±0.05 0.8±0.10 2.8
SS-010 1.0±0.05 1.0±0.10 3
SS-012 1.0±0.05 1.2±0.10 3.2
SS-015 1.0±0.05 1.5±0.10 3.5
SS-018 1.0±0.05 1.8±0.10 3.8
SS-020 1.0±0.05 2.0±0.10 4
SS-022 1.0±0.05 2.2±0.10 4.2
SS-025 1.0±0.05 2.5±0.10 4.5
SS-028 1.0±0.05 2.8±0.10 4.8
SS-030 1.0±0.05 3.0±0.10 5
SS-032 1.0±0.05 3.2±0.10 5.2
SS-035 1.0±0.05 3.5±0.10 5.5
SS-038 1.0±0.05 3.8±0.10 5.8
SS-040 1.0±0.05 4.0±0.10 6
SS-042 1.0±0.05 4.2±0.10 6.2
SS-045 1.0±0.05 4.5±0.10 6.5
SS-048 1.0±0.05 4.8±0.10 6.8
SS-050 1.0±0.05 5.0±0.10 7
SS-055 1.0±0.05 5.5±0.10 7.5
SS-060 1.0±0.05 6.0±0.10 8
SS-065 1.0±0.05 6.5±0.10 8.5
SS-070 1.0±0.05 7.0±0.10 9
SS-075 1.0±0.05 7.5±0.10 9.5
SS-080 1.0±0.05 8.0±0.10 10
SS-085 1.0±0.05 8.5±0.10 10.5
SS-090 1.0±0.05 9.0±0.10 11
SS-095 1.0±0.05 9.5±0.10 11.5
SS-100 1.0±0.05 10.0±0.10 12
SS-105 1.0±0.05 10.5±0.10 12.5
SS-110 1.0±0.05 11.0±0.10 13
SS-115 1.0±0.05 11.5±0.10 13.5
SS-120 1.0±0.05 12.0±0.10 14
SS-125 1.0±0.05 12.5±0.10 14.5
SS-130 1.0±0.05 13.0±0.10 15
SS-135 1.0±0.05 13.5±0.10 15.5
SS-140 1.0±0.05 14.0±0.10 16
SS-145 1.0±0.05 14.5±0.10 16.5
SS-150 1.0±0.05 15.0±0.10 17
SS-155 1.0±0.05 15.5±0.10 17.5
SS-160 1.0±0.05 16.0±0.10 18
SS-165 1.0±0.05 16.5±0.10 18.5
SS-170 1.0±0.05 17.0±0.10 19
SS-175 1.0±0.05 17.5±0.10 19.5
SS-180 1.0±0.05 18.0±0.10 20
SS-185 1.0±0.05 18.5±0.10 20.5
SS-190 1.0±0.05 19.0±0.10 21
SS-195 1.0±0.05 19.5±0.10 21.5
SS-200 1.0±0.05 20.0±0.10 22

(Unit: mm)

O ring SS standard (size table) SS standard (SS number / SS series) This is the O-ring size chart. O-ring size standard for the SS standard, for each cord diameter (thickness of the O-ring cross-section), the inner diameter and outer diameter, basic tolerance. The SS standard is the smallest O-ring size series among the common ones. Since it was prescribed in the **Showa period, today it is widely used for fixing cylindrical surfaces and flat surfaces in narrow places alongside S standards.
**The Showa period, potentially "period of enlightened peace/harmony" or "period of radiant Japan"), or Showa era refers to the period of Japanese history corresponding to the reign of the Showa Emperor, Hirohito, from December 25, 1926, through January 7, 1989.


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