ResourcesDWG symbol librariesO-rings, ISO 3601
Cross-section 6.99 mm
O-rings, ISO 3601: Cross-section 6.99 mm: 51 ready-made AutoCAD blocks (DWG), free to download and use in your own projects, as a ZIP or one symbol at a time.
51 O-rings of 6.99 mm cross-section, size codes 425 to 475: the large rings for flanges and covers.
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 51 symbols
51 of 51 symbols
O-ring 113.67 x 6.99
ORG_425Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 116.84 x 6.99
ORG_426Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 120.02 x 6.99
ORG_427Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 123.19 x 6.99
ORG_428Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 126.37 x 6.99
ORG_429Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 129.54 x 6.99
ORG_430Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 132.72 x 6.99
ORG_431Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 135.89 x 6.99
ORG_432Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 139.07 x 6.99
ORG_433Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 142.24 x 6.99
ORG_434Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 145.42 x 6.99
ORG_435Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 148.59 x 6.99
ORG_436Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 151.77 x 6.99
ORG_437Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 158.12 x 6.99
ORG_438Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 164.47 x 6.99
ORG_439Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 170.82 x 6.99
ORG_440Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 177.17 x 6.99
ORG_441Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 183.52 x 6.99
ORG_442Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 189.87 x 6.99
ORG_443Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 196.22 x 6.99
ORG_444Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 202.57 x 6.99
ORG_445Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 215.27 x 6.99
ORG_446Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 227.97 x 6.99
ORG_447Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 240.67 x 6.99
ORG_448Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 253.37 x 6.99
ORG_449Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 266.07 x 6.99
ORG_450Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 278.77 x 6.99
ORG_451Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 291.47 x 6.99
ORG_452Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 304.17 x 6.99
ORG_453Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 316.87 x 6.99
ORG_454Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 329.57 x 6.99
ORG_455Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 342.27 x 6.99
ORG_456Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 354.97 x 6.99
ORG_457Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 367.67 x 6.99
ORG_458Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 380.37 x 6.99
ORG_459Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 393.07 x 6.99
ORG_460Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 405.26 x 6.99
ORG_461Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 417.96 x 6.99
ORG_462Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 430.66 x 6.99
ORG_463Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 443.36 x 6.99
ORG_464Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 456.06 x 6.99
ORG_465Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 468.76 x 6.99
ORG_466Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 481.46 x 6.99
ORG_467Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 494.16 x 6.99
ORG_468Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 506.86 x 6.99
ORG_469Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 532.26 x 6.99
ORG_470Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 557.66 x 6.99
ORG_471Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 582.68 x 6.99
ORG_472Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 608.08 x 6.99
ORG_473Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 633.48 x 6.99
ORG_474Attributes
DESIGNATIONSIZE_CODEID_MMCS_MMSTANDARDMATERIALHARDNESS_IRHDPART_NOMANUFACTURERQTYREMARKSDESCO-ring 658.88 x 6.99
ORG_475Attributes
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.





















































