{"id":1571,"date":"2026-10-17T10:23:44","date_gmt":"2026-10-17T02:23:44","guid":{"rendered":"https:\/\/www.bosssealing.com\/?p=1571"},"modified":"2026-10-17T10:33:27","modified_gmt":"2026-10-17T02:33:27","slug":"din-11853-2-form-a-nutflansch-dimension","status":"publish","type":"post","link":"https:\/\/www.bosssealing.com\/zh\/din-11853-2-form-a-nutflansch-dimension\/","title":{"rendered":"DIN 11853-2 Form A Dimension"},"content":{"rendered":"

DIN 11853-2 Form A Dimension<\/h2>\n\n\n\n

Unit: mm Form A: Flange with O-ring groove (Nutflansch, NF) Mating part: Form B (Glattflansch, GF, plain face flange). Flange OD, PCD and bolt holes are identical for Form A & B. O-rings are interchangeable between DIN 11853\u001e2 (short type) and DIN 11864\u001e2 (long type) DIN 11853-2 Form A Dimension<\/p>\n\n\n\n

\"DIN11853-2<\/span>
\n

ISO DIN11853-2 o-ring<\/p>\n<\/div><\/div>\n\n\n\n

DIN 11853-2 Form A Dimension Table<\/p>\n\n\n\n

DN<\/strong><\/strong><\/td>Flange OD D<\/strong><\/strong><\/td>PCD<\/strong><\/strong><\/td>Bolt Qty & Size<\/strong><\/strong><\/td>O-Ring (ID \u00d7 CS)<\/strong><\/strong><\/td>Tube OD DIN11866 A<\/strong><\/strong><\/td><\/tr>
DN10<\/td>54<\/td>41.5<\/td>4 \u00d7 M8<\/td>12 \u00d7 3.5<\/td>12.7<\/td><\/tr>
DN15<\/td>59<\/td>42.0<\/td>4 \u00d7 M8<\/td>18 \u00d7 3.5<\/td>19.0<\/td><\/tr>
DN20<\/td>64<\/td>47.0<\/td>4 \u00d7 M8<\/td>22 \u00d7 3.5<\/td>23.0<\/td><\/tr>
DN25<\/td>70<\/td>53.0<\/td>4 \u00d7 M8<\/td>28 \u00d7 3.5<\/td>29.0<\/td><\/tr>
DN32<\/td>76<\/td>59.0<\/td>4 \u00d7 M8<\/td>34 \u00d7 5.0<\/td>35.0<\/td><\/tr>
DN40<\/td>82<\/td>65.0<\/td>4 \u00d7 M8<\/td>40 \u00d7 5.0<\/td>41.0<\/td><\/tr>
DN50<\/td>94<\/td>77.0<\/td>4 \u00d7 M10<\/td>52 \u00d7 5.0<\/td>53.0<\/td><\/tr>
DN65<\/td>112<\/td>94.0<\/td>8 \u00d7 M10<\/td>68 \u00d7 5.0<\/td>70.0<\/td><\/tr>
DN80<\/td>127<\/td>109.0<\/td>8 \u00d7 M10<\/td>82 \u00d7 5.0<\/td>85.0<\/td><\/tr>
DN100<\/td>142<\/td>124.0<\/td>8 \u00d7 M10<\/td>98 \u00d7 5.0<\/td>104.0<\/td><\/tr>
DN125<\/td>162<\/td>144.0<\/td>8 \u00d7 M12<\/td>122 \u00d7 5.0<\/td>129.0<\/td><\/tr>
DN150<\/td>182<\/td>164.0<\/td>8 \u00d7 M12<\/td>142 \u00d7 5.0<\/td>154.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Technical Notes<\/strong><\/h2>\n\n\n\n
    \n
  1. Pressure rating @ -10 \u2103 ~ +140 \u2103 with suitable elastomer:
    1. DN10 ~ DN40 (Tube OD 12.7 ~ 41.0): 25 bar<\/li><\/ol>
      1. DN50 ~ DN100 (Tube OD 53 ~ 104): 16 bar<\/li><\/ol>\n
          \n
        1. DN125 ~ DN150 (Tube OD 129 ~ 154): 10 bar<\/li>\n<\/ol>\n<\/li>\n\n\n\n
        2. Flange type: DIN 11853-2 Form A, short hygienic flange, butt-weld end.<\/li>\n\n\n\n
        3. Tube: DIN 11866 Series A \/ DIN EN 10357 Series A sanitary tube.<\/li>\n\n\n\n
        4. Surface finish: Default H3, Ra \u22640.8 \u03bcm internal; sterile application Ra \u22640.4 \u03bcm optional.<\/li>\n\n\n\n
        5. O-ring materials: EPDM, VMQ, FKM, HNBR, FFKM; FDA 21 CFR 177.2600 \/ EU 10\/2011 \/ USP Class VI available upon request.<\/li>\n\n\n\n
        6. Material options: 1.4301, 1.4307 (304\/304L), 1.4404, 1.4435 (316L).<\/li>\n<\/ol>\n\n\n\n

          We supply o-rings<\/a> meet standard of DIN 11853-2 Form A, please request us if any demand.<\/p>\n\n\n\n

          \u96fb\u5b50\u90f5\u4ef6\uff1a sales@bosssealing.com<\/p>\n\n\n\n

          <\/p>","protected":false},"excerpt":{"rendered":"

          DIN 11853-2 Form A Dimension Unit: mm Form A: Flange with O-ring groove (Nutflansch, NF) Mating part: Form B (Glattflansch, GF, plain face flange). Flange OD, PCD and bolt holes are identical for Form A & B. O-rings are interchangeable between DIN 11853\u001e2 (short type) and DIN 11864\u001e2 (long type) DIN 11853-2 Form A Dimension […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1571","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t