{"id":5854,"date":"2026-03-26T15:26:30","date_gmt":"2026-03-26T15:26:30","guid":{"rendered":"https:\/\/ru.tubeboot.com\/?page_id=5854"},"modified":"2026-03-28T05:03:36","modified_gmt":"2026-03-28T05:03:36","slug":"heat-shrink-boot-size-guide","status":"publish","type":"page","link":"https:\/\/ru.tubeboot.com\/ru\/heat-shrink-boot-size-guide\/","title":{"rendered":"Heat Shrink Boot Size and Material Reference Guide"},"content":{"rendered":"
\n

How to Read Heat Shrink Boot Dimensions<\/h2>\n

Every heat shrink boot size is defined by the following key dimensions:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Dimension<\/th>\n\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/th>\n<\/tr>\n<\/thead>\n
D1 (Entry ID)<\/strong><\/td>\nInner diameter of the large opening \u2014 fits over connector backshell or cable trunk<\/td>\n<\/tr>\n
D2 (Exit ID)<\/strong><\/td>\nInner diameter of the cable exit leg(s) \u2014 must clear the cable bundle OD<\/td>\n<\/tr>\n
L1 (Body Length)<\/strong><\/td>\nLength of the boot body from entry to the start of the exit leg<\/td>\n<\/tr>\n
L2 (Leg Length)<\/strong><\/td>\nLength of the exit leg(s)<\/td>\n<\/tr>\n
\u041a\u043e\u044d\u0444\u0444\u0438\u0446\u0438\u0435\u043d\u0442 \u0443\u0441\u0430\u0434\u043a\u0438<\/strong><\/td>\n2:1 (most common) or 3:1 for dual-wall versions<\/td>\n<\/tr>\n
Recovered D1<\/strong><\/td>\nD1 after full shrinkage (= D1 supplied \u00f7 shrink ratio)<\/td>\n<\/tr>\n
Recovered D2<\/strong><\/td>\nD2 after full shrinkage (= D2 supplied \u00f7 shrink ratio)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Important:<\/strong> All dimensions listed in size tables are before shrinking<\/strong> (as-supplied state). Always verify that the recovered<\/strong> dimensions will grip your cable or backshell OD.<\/p><\/blockquote>\n

\n

Sizing Rule of Thumb<\/h2>\n

For a reliable grip and seal after shrinking:<\/p>\n

    \n
  • As-supplied D1<\/strong> should be \u2265 1.15\u00d7 the connector backshell or trunk OD<\/strong><\/li>\n
  • Recovered D1<\/strong> should be \u2264 0.95\u00d7 the connector backshell or trunk OD<\/strong><\/li>\n
  • As-supplied D2<\/strong> should be \u2265 1.1\u00d7 the cable bundle OD<\/strong><\/li>\n
  • Recovered D2<\/strong> should be \u2264 0.9\u00d7 the cable bundle OD<\/strong><\/li>\n<\/ul>\n

    If the cable OD is at the edge of the recovery range, size up to the next boot and use additional sleeving on the cable to fill the gap, or select a 3:1 shrink ratio dual-wall boot.<\/p>\n

    \n

    Straight Boot Size Reference (202A \/ 202K Series)<\/h2>\n

    Standard straight transition boots \u2014 2:1 shrink ratio<\/em><\/p>\n\n\n\n\n\n\n\n
    \u0420\u0430\u0437\u043c\u0435\u0440<\/strong><\/th>\nD1 As-Supplied (mm)<\/strong><\/th>\nD1 Recovered (mm)<\/strong><\/th>\nD2 As-Supplied (mm)<\/strong><\/th>\nD2 Recovered (mm)<\/strong><\/th>\nBody Length (mm)<\/strong><\/th>\n202A-0<\/th>\n12.7<\/th>\n6.4<\/th>\n6.4<\/th>\n3.2<\/th>\n38<\/th>\n<\/tr>\n<\/thead>\n
    202A-1<\/td>\n19.1<\/td>\n9.5<\/td>\n9.5<\/td>\n4.8<\/td>\n51<\/td>\n202A-2<\/td>\n25.4<\/td>\n12.7<\/td>\n12.7<\/td>\n6.4<\/td>\n64<\/td>\n<\/tr>\n
    202A-3<\/td>\n31.8<\/td>\n15.9<\/td>\n15.9<\/td>\n7.9<\/td>\n76<\/td>\n202A-4<\/td>\n38.1<\/td>\n19.1<\/td>\n19.1<\/td>\n9.5<\/td>\n89<\/td>\n<\/tr>\n
    202A-5<\/td>\n50.8<\/td>\n25.4<\/td>\n25.4<\/td>\n12.7<\/td>\n102<\/td>\n202A-6<\/td>\n63.5<\/td>\n31.8<\/td>\n31.8<\/td>\n15.9<\/td>\n114<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    202K series = same dimensions in PVDF (Kynar) material<\/em><\/p>\n

    \n

    90\u00b0 Angle Boot Size Reference (222D \/ 222K Series)<\/h2>\n

    Right-angle transition boots \u2014 2:1 shrink ratio<\/em><\/p>\n\n\n\n\n\n\n\n
    \u0420\u0430\u0437\u043c\u0435\u0440<\/strong><\/th>\nD1 As-Supplied (mm)<\/strong><\/th>\nD1 Recovered (mm)<\/strong><\/th>\nD2 As-Supplied (mm)<\/strong><\/th>\nD2 Recovered (mm)<\/strong><\/th>\nBody Length (mm)<\/strong><\/th>\n<\/tr>\n<\/thead>\n
    222D-1<\/td>\n19.1<\/td>\n9.5<\/td>\n9.5<\/td>\n4.8<\/td>\n51<\/td>\n<\/tr>\n
    222D-3<\/td>\n31.8<\/td>\n15.9<\/td>\n15.9<\/td>\n7.9<\/td>\n76<\/td>\n<\/tr>\n
    222D-5<\/td>\n50.8<\/td>\n25.4<\/td>\n25.4<\/td>\n12.7<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    222K series = same dimensions in PVDF (Kynar) material<\/em><\/p>\n

    \n

    Y-Shape Boot Size Reference (382A Series)<\/h2>\n

    Two-leg branch boots \u2014 2:1 shrink ratio<\/em><\/p>\n\n\n\n\n\n\n
    \u0420\u0430\u0437\u043c\u0435\u0440<\/strong><\/th>\nD1 Trunk (mm)<\/strong><\/th>\nD1 Recovered (mm)<\/strong><\/th>\nD2 Leg As-Supplied (mm)<\/strong><\/th>\nD2 Leg Recovered (mm)<\/strong><\/th>\nTrunk Length (mm)<\/strong><\/th>\nLeg Length (mm)<\/strong><\/th>\n382A-1<\/th>\n19.1<\/th>\n9.5<\/th>\n9.5<\/th>\n4.8<\/th>\n38<\/th>\n51<\/th>\n<\/tr>\n<\/thead>\n
    382A-2<\/td>\n25.4<\/td>\n12.7<\/td>\n12.7<\/td>\n6.4<\/td>\n51<\/td>\n64<\/td>\n382A-3<\/td>\n31.8<\/td>\n15.9<\/td>\n15.9<\/td>\n7.9<\/td>\n64<\/td>\n76<\/td>\n<\/tr>\n
    382A-4<\/td>\n38.1<\/td>\n19.1<\/td>\n19.1<\/td>\n9.5<\/td>\n76<\/td>\n89<\/td>\n382A-5<\/td>\n50.8<\/td>\n25.4<\/td>\n25.4<\/td>\n12.7<\/td>\n89<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n

    1-to-3 Boot Size Reference (462A Series)<\/h2>\n

    Three-leg fan-out boots \u2014 2:1 shrink ratio<\/em><\/p>\n\n\n\n\n\n\n
    \u0420\u0430\u0437\u043c\u0435\u0440<\/strong><\/th>\nD1 Trunk (mm)<\/strong><\/th>\nD1 Recovered (mm)<\/strong><\/th>\nD2 Leg As-Supplied (mm)<\/strong><\/th>\nD2 Leg Recovered (mm)<\/strong><\/th>\nTrunk Length (mm)<\/strong><\/th>\n<\/tr>\n<\/thead>\n
    462A-3<\/td>\n31.8<\/td>\n15.9<\/td>\n12.7<\/td>\n6.4<\/td>\n64<\/td>\n<\/tr>\n
    462A-5<\/td>\n50.8<\/td>\n25.4<\/td>\n19.1<\/td>\n9.5<\/td>\n89<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Note:<\/strong> All dimensional data above is representative reference data for standard series. Exact dimensions may vary by manufacturer. Request our full dimensional datasheet for precise specifications.<\/p><\/blockquote>\n

    \n

    Material Reference Chart<\/h2>\n\n\n\n\n\n\n
    \u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b<\/strong><\/th>\nOperating Temp<\/strong><\/th>\nShrink Temp<\/strong><\/th>\n\u041a\u043e\u044d\u0444\u0444\u0438\u0446\u0438\u0435\u043d\u0442 \u0443\u0441\u0430\u0434\u043a\u0438<\/strong><\/th>\nChemical Resistance<\/strong><\/th>\nFlexibility After Shrink<\/strong><\/th>\nFlame Rating<\/strong><\/th>\nSpec Compliance<\/strong><\/th>\nPolyolefin (std)<\/th>\n\u043e\u0442 -55\u00b0C \u0434\u043e +135\u00b0C<\/th>\n\u2265120\u00b0C<\/th>\n2:1<\/th>\n\u0423\u043c\u0435\u0440\u0435\u043d\u043d\u044b\u0439<\/th>\n\u0423\u043c\u0435\u0440\u0435\u043d\u043d\u044b\u0439<\/th>\nUL 94 V-2<\/th>\nUL 224<\/th>\n<\/tr>\n<\/thead>\n
    Polyolefin (dual-wall)<\/td>\n-55\u00b0C to +110\u00b0C<\/td>\n\u2265120\u00b0C<\/td>\n3:1<\/td>\n\u0423\u043c\u0435\u0440\u0435\u043d\u043d\u044b\u0439<\/td>\n\u0423\u043c\u0435\u0440\u0435\u043d\u043d\u044b\u0439<\/td>\nUL 94 V-2<\/td>\nUL 224<\/td>\nPVDF (Kynar)<\/td>\n\u043e\u0442 -55\u00b0C \u0434\u043e +175\u00b0C<\/td>\n\u2265150\u00b0C<\/td>\n2:1<\/td>\nExcellent (fuels, oils, solvents)<\/td>\nSemi-rigid<\/td>\nUL 94 V-0<\/td>\n\u041c\u0418\u041b-\u0414\u0422\u041b-23053\/16<\/td>\n<\/tr>\n
    PVDF dual-wall<\/td>\n\u043e\u0442 -55\u00b0C \u0434\u043e +175\u00b0C<\/td>\n\u2265150\u00b0C<\/td>\n3:1<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\nSemi-rigid<\/td>\nUL 94 V-0<\/td>\n\u041c\u0418\u041b-\u0414\u0422\u041b-23053\/16<\/td>\n\u042d\u043b\u0430\u0441\u0442\u043e\u043c\u0435\u0440<\/td>\n\u043e\u0442 -75\u00b0C \u0434\u043e +150\u00b0C<\/td>\n\u2265120\u00b0C<\/td>\n2:1<\/td>\nGood (oils, water)<\/td>\nHighly flexible<\/td>\nSelf-extinguishing<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n

    Connector Backshell OD to Boot Entry Size \u2014 Quick Match Table<\/h2>\n

    Use this table to quickly identify the boot entry size for common connector families:<\/p>\n\n\n\n\n\n\n\n\n\n\n
    Connector Family<\/strong><\/th>\nShell Size<\/strong><\/th>\nBackshell OD (approx. mm)<\/strong><\/th>\nRecommended Boot Entry Size<\/strong><\/th>\nMIL-DTL-38999<\/th>\nSize 9<\/th>\n14\u201316<\/th>\n202A-1 \/ 222D-1<\/th>\n<\/tr>\n<\/thead>\n
    MIL-DTL-38999<\/td>\nSize 11<\/td>\n18\u201320<\/td>\n202A-1 \/ 222D-1<\/td>\nMIL-DTL-38999<\/td>\nSize 13<\/td>\n22\u201325<\/td>\n202A-2 \/ 222D-2<\/td>\n<\/tr>\n
    MIL-DTL-38999<\/td>\nSize 15<\/td>\n26\u201330<\/td>\n202A-2 \/ 222D-2<\/td>\nMIL-DTL-38999<\/td>\nSize 17<\/td>\n31\u201335<\/td>\n202A-3 \/ 222D-3<\/td>\n<\/tr>\n
    MIL-DTL-38999<\/td>\nSize 19<\/td>\n36\u201340<\/td>\n202A-4 \/ 222D-4<\/td>\nMIL-DTL-38999<\/td>\nSize 21<\/td>\n41\u201346<\/td>\n202A-4 \/ 222D-4<\/td>\n<\/tr>\n
    MIL-DTL-38999<\/td>\nSize 23<\/td>\n47\u201352<\/td>\n202A-5 \/ 222D-5<\/td>\nDeutsch DT<\/td>\n2-pin<\/td>\n18\u201320<\/td>\n202A-1<\/td>\n<\/tr>\n
    Deutsch DT<\/td>\n4-pin<\/td>\n22\u201325<\/td>\n202A-2<\/td>\nDeutsch DT<\/td>\n6-pin<\/td>\n26\u201330<\/td>\n202A-2<\/td>\n<\/tr>\n
    Deutsch HD<\/td>\n06<\/td>\n30\u201334<\/td>\n202A-3<\/td>\nDeutsch HD<\/td>\n10<\/td>\n38\u201342<\/td>\n202A-4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    These are approximate references. Always measure the actual backshell OD before final boot selection.<\/p><\/blockquote>\n

    \n

    Raychem Series Cross-Reference<\/h2>\n\n\n\n\n\n\n\n\n
    Raychem Part Series<\/strong><\/th>\nBoot Type<\/strong><\/th>\n\u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b<\/strong><\/th>\nEquivalent Series<\/strong><\/th>\n<\/tr>\n<\/thead>\n
    202K<\/td>\nStraight<\/td>\nPVDF (Kynar)<\/td>\n202K (PVDF equivalent)<\/td>\n<\/tr>\n
    222K<\/td>\n90\u00b0 Angle<\/td>\nPVDF (Kynar)<\/td>\n222K (PVDF equivalent)<\/td>\n<\/tr>\n
    382A<\/td>\nY-Shape<\/td>\n\u041f\u043e\u043b\u0438\u043e\u043b\u0435\u0444\u0438\u043d<\/td>\n382A equivalent<\/td>\n<\/tr>\n
    462\u0410<\/td>\n1-to-3<\/td>\n\u041f\u043e\u043b\u0438\u043e\u043b\u0435\u0444\u0438\u043d<\/td>\n462A equivalent<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n

    Specification Standards Reference<\/h2>\n\n\n\n\n\n\n\n\n\n
    Standard<\/th>\nScope<\/th>\n\u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b<\/th>\nApplies To<\/th>\n<\/tr>\n<\/thead>\n
    \u041c\u0418\u041b-\u0414\u0422\u041b-23053\/16<\/strong><\/td>\nMilitary heat shrink tubing and boots<\/td>\n\u041f\u0412\u0414\u0424<\/td>\nDefense, aerospace, government procurement<\/td>\n<\/tr>\n
    AMS-DTL-23053<\/strong><\/td>\nAerospace heat shrink products<\/td>\nVarious<\/td>\nCommercial aerospace, OEM<\/td>\n<\/tr>\n
    UL 224<\/strong><\/td>\nCommercial heat shrink tubing<\/td>\n\u041f\u043e\u043b\u0438\u043e\u043b\u0435\u0444\u0438\u043d<\/td>\nIndustrial, commercial<\/td>\n<\/tr>\n
    IEC 60684<\/strong><\/td>\nInternational shrinkable sleeving<\/td>\nVarious<\/td>\nGlobal export \/ CE-marked products<\/td>\n<\/tr>\n
    SAE AS23053<\/strong><\/td>\nAerospace shrink tubing<\/td>\nVarious<\/td>\nSAE aerospace specifications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n

    How to Order: Information Required<\/h2>\n

    When requesting a quote or placing an order for heat shrink boots, provide the following:<\/p>\n

      \n
    1. Boot type<\/strong> \u2014 Straight \/ 90\u00b0 \/ 45\u00b0 \/ Y \/ T \/ 1-to-3<\/li>\n
    2. Size number<\/strong> \u2014 e.g., 202A-2, 222D-3<\/li>\n
    3. \u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b<\/strong> \u2014 Polyolefin \/ PVDF \/ Elastomer \/ Dual-wall<\/li>\n
    4. Quantity<\/strong> \u2014 Units per order<\/li>\n
    5. Connector reference<\/strong> (optional) \u2014 Backshell part number for sizing verification<\/li>\n
    6. Specification<\/strong> (if applicable) \u2014 MIL-DTL-23053\/16, AMS, UL, etc.<\/li>\n<\/ol>\n
      \n

      \u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/h2>\n

      How do I find the right size heat shrink boot?<\/strong><\/p>\n

      Measure the outer diameter of your connector backshell (for the entry) and the outer diameter of your cable bundle (for the exit leg). Select a boot where the as-supplied entry ID is at least 1.15\u00d7 the backshell OD, and the recovered ID is no more than 0.95\u00d7 the backshell OD.<\/p>\n

      What is the difference between 202A and 202K boots?<\/strong><\/p>\n

      202A boots are made from polyolefin for general-purpose applications. 202K boots are the PVDF (Kynar) version, offering higher temperature resistance (up to 175\u00b0C) and compliance with MIL-DTL-23053\/16 for aerospace and military use.<\/p>\n

      What shrink temperature do I need for PVDF heat shrink boots?<\/strong><\/p>\n

      PVDF (Kynar) boots require a minimum shrink temperature of approximately 150\u00b0C. Use an industrial heat gun with a temperature setting above 150\u00b0C, or a dedicated reflective nozzle for even heat distribution.<\/p>\n

      Can I use a standard heat gun for heat shrink boots?<\/strong><\/p>\n

      Yes. A standard industrial heat gun at the appropriate temperature setting is suitable. For large boots or PVDF material, a reflective nozzle attachment or bench heat tunnel ensures uniform shrinkage.<\/p>\n

      What is a 3:1 shrink ratio boot?<\/strong><\/p>\n

      A 3:1 shrink ratio boot shrinks to one-third of its as-supplied diameter. These are typically dual-wall adhesive-lined boots, allowing them to fit a wider range of cable diameters and provide a more positive seal than 2:1 ratio boots.<\/p>\n

      Are your boots compliant with MIL-DTL-23053\/16?<\/strong><\/p>\n

      Our PVDF (202K \/ 222K series) boots are manufactured to meet the functional requirements of MIL-DTL-23053\/16. Full test reports and material certifications are available on request.<\/p>\n

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

      How to Read Heat Shrink Boot Dimensions Every heat shrink boot size is defined by the following key dimensions: Dimension Description D1 (Entry ID) Inner diameter of the large opening \u2014 fits over connector backshell or cable trunk D2 (Exit ID) Inner diameter of the cable exit leg(s) \u2014 must clear the cable bundle OD…<\/p>","protected":false},"author":1,"featured_media":3810,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5854","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/pages\/5854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/comments?post=5854"}],"version-history":[{"count":3,"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/pages\/5854\/revisions"}],"predecessor-version":[{"id":5918,"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/pages\/5854\/revisions\/5918"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/media\/3810"}],"wp:attachment":[{"href":"https:\/\/ru.tubeboot.com\/ru\/wp-json\/wp\/v2\/media?parent=5854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}