ResourcesDWG symbol librariesO-rings, ISO 3601
Cross-section 3.53 mm
O-rings, ISO 3601: Cross-section 3.53 mm: 84 ready-made AutoCAD blocks (DWG), free to download and use in your own projects, as a ZIP or one symbol at a time.
84 O-rings of 3.53 mm cross-section, size codes 201 to 284: the most used cross-section.
Version 1.0 · updated October 17, 2026
Using AutoCAD 2017 or an earlier version? Download the 2010 format
Free to use and modify in your own projects, including commercial ones. The ZIP holds one plain DWG file in AutoCAD 2018 format and a README; no add-in needed. Provided as is, without warranty.
Related symbol libraries
All 84 symbols
84 of 84 symbols
O-ring 4.34 x 3.53
ORG_201Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 5.94 x 3.53
ORG_202Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 7.52 x 3.53
ORG_203Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 9.12 x 3.53
ORG_204Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 10.69 x 3.53
ORG_205Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 12.29 x 3.53
ORG_206Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 13.87 x 3.53
ORG_207Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 15.47 x 3.53
ORG_208Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 17.04 x 3.53
ORG_209Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 18.64 x 3.53
ORG_210Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 20.22 x 3.53
ORG_211Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 21.82 x 3.53
ORG_212Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 23.39 x 3.53
ORG_213Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 24.99 x 3.53
ORG_214Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 26.57 x 3.53
ORG_215Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 28.17 x 3.53
ORG_216Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 29.74 x 3.53
ORG_217Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 31.34 x 3.53
ORG_218Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 32.92 x 3.53
ORG_219Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 34.52 x 3.53
ORG_220Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 36.09 x 3.53
ORG_221Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 37.69 x 3.53
ORG_222Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 40.87 x 3.53
ORG_223Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 44.04 x 3.53
ORG_224Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 47.22 x 3.53
ORG_225Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 50.39 x 3.53
ORG_226Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 53.57 x 3.53
ORG_227Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 56.74 x 3.53
ORG_228Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 59.92 x 3.53
ORG_229Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 63.09 x 3.53
ORG_230Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 66.27 x 3.53
ORG_231Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 69.44 x 3.53
ORG_232Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 72.62 x 3.53
ORG_233Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 75.79 x 3.53
ORG_234Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 78.97 x 3.53
ORG_235Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 82.14 x 3.53
ORG_236Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 85.32 x 3.53
ORG_237Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 88.49 x 3.53
ORG_238Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 91.67 x 3.53
ORG_239Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 94.84 x 3.53
ORG_240Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 98.02 x 3.53
ORG_241Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 101.19 x 3.53
ORG_242Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 104.37 x 3.53
ORG_243Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 107.54 x 3.53
ORG_244Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 110.72 x 3.53
ORG_245Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 113.89 x 3.53
ORG_246Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 117.07 x 3.53
ORG_247Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 120.24 x 3.53
ORG_248Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 123.42 x 3.53
ORG_249Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 126.59 x 3.53
ORG_250Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 129.77 x 3.53
ORG_251Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 132.94 x 3.53
ORG_252Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 136.12 x 3.53
ORG_253Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 139.29 x 3.53
ORG_254Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 142.47 x 3.53
ORG_255Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 145.64 x 3.53
ORG_256Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 148.82 x 3.53
ORG_257Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 151.99 x 3.53
ORG_258Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 158.34 x 3.53
ORG_259Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 164.69 x 3.53
ORG_260Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 171.04 x 3.53
ORG_261Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 177.39 x 3.53
ORG_262Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 183.74 x 3.53
ORG_263Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 190.09 x 3.53
ORG_264Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 196.44 x 3.53
ORG_265Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 202.79 x 3.53
ORG_266Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 209.14 x 3.53
ORG_267Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 215.49 x 3.53
ORG_268Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 221.84 x 3.53
ORG_269Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 228.19 x 3.53
ORG_270Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 234.54 x 3.53
ORG_271Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 240.89 x 3.53
ORG_272Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 247.24 x 3.53
ORG_273Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 253.59 x 3.53
ORG_274Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 266.29 x 3.53
ORG_275Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 278.99 x 3.53
ORG_276Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 291.69 x 3.53
ORG_277Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 304.39 x 3.53
ORG_278Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 329.79 x 3.53
ORG_279Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 355.19 x 3.53
ORG_280Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 380.59 x 3.53
ORG_281Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 405.26 x 3.53
ORG_282Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 430.66 x 3.53
ORG_283Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 456.06 x 3.53
ORG_284Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESC
Missing a symbol? Tell us which one.
Attributes for parts lists
Each block has the designation as a visible attribute (for example O-ring 29.87 x 3.53). The invisible attributes are SIZE_CODE, ID_MM, CS_MM, STANDARD, MATERIAL, HARDNESS_IRHD, PART_NO, MANUFACTURER, QTY and REMARKS. The size code, inside diameter and cross-section are already filled in; set the material and hardness to what you order.
Export the O-rings of an assembly drawing to Excel with BlockSync to get a parts list with size, material and quantity, and write corrections back in one run, with preview and backup.
How to use the library
- Unzip the file and open the DWG. Copy the symbols you need into your plan, or drag the blocks in from DesignCenter (ADCENTER).
- The rings are drawn at real size, 1 drawing unit = 1 mm: the inside circle is the inside diameter and the outside circle is the inside diameter plus twice the cross-section. Insert them at scale 1. Small rings are drawn small; the catalog sheet enlarges them only so that you can see them.
- The insertion point is the centre of the ring. The end view is on the left and the cut cross-section, two circles of the cross-section diameter above and below the centre line, is on the right, so you can use the same block in a plan view and in a section view. Explode the block and keep the view you need.
- The five libraries differ only by cross-section, so take the library of the cross-section you need and look up the size by its code or by its inside diameter. The block name is ORG_ followed by the size code, for example ORG_210.






















































































