{"id":100180,"date":"2026-02-15T20:25:23","date_gmt":"2026-02-15T20:25:23","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100180"},"modified":"2026-07-13T01:38:57","modified_gmt":"2026-07-13T01:38:57","slug":"o-ring-selection-iso3601","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/he\/calculators\/o-ring-selection-iso3601\/","title":{"rendered":"\u05d1\u05d3\u05d9\u05e7\u05ea \u05d2\u05d9\u05d0\u05d5\u05de\u05d8\u05e8\u05d9\u05d4 \u05e9\u05dc \u05d7\u05d5\u05d2 Oocumented"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Documented O-Ring Geometry Check\",\"description\":\"Checks nominal outside diameter,signed installed ID change and nominal cross-section squeeze for a documented O-ring and housing without inventing ISO 3601 sizes or acceptance limits.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/o-ring-selection-iso3601\/\",\"applicationCategory\":\"EngineeringApplication\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2026-07-13\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"Nominal OD arithmetic\",\"Signed ID stretch or compression\",\"Nominal cross-section squeeze\",\"Source and applicability gate\"],\"keywords\":\"O-ring geometry,ISO 3601 scope,O-ring squeeze,O-ring stretch,housing verification\"}<\/script>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does this select an ISO 3601 O-ring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Enter an exact designation and nominal dimensions from the applicable controlled table or manufacturer record.\"}},{\"@type\":\"Question\",\"name\":\"Does it design the housing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. ISO 3601-2:2025 housing dimensions depend on the documented application and table. This worksheet only checks entered nominal geometry.\"}},{\"@type\":\"Question\",\"name\":\"Does it decide acceptable squeeze or stretch?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. It reports signed arithmetic without universal pass\/fail limits.\"}},{\"@type\":\"Question\",\"name\":\"Are material and pressure suitability checked?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Compound,fluid,temperature,pressure,clearance,extrusion,dynamics,tolerances and surface requirements remain separate.\"}}]}<\/script>\n<style>:root{--s:#fff;--sa:#f8f6f2;--i:#1a1a1a;--is:#5a5650;--im:#8a857e;--a:#c85a2a;--al:#fdf0ea;--b:#d9d4cc;--bl:#e8e4dd;--y:#8a6500;--yl:#fef9e8;--r:#a12b2b;--sh:0 1px 3px rgba(26,26,26,.06),0 4px 12px rgba(26,26,26,.04);--f:'DM Sans',sans-serif;--m:'JetBrains Mono',monospace;--d:'Fraunces',serif}.vc-calculator{font-family:var(--f);font-size:15px;line-height:1.65;color:var(--i);max-width:960px;margin:auto;padding:20px 16px 40px}.vc-calculator *{box-sizing:border-box}.vc-header{text-align:center;padding:48px 20px 40px;border-bottom:3px solid var(--a)}.vc-header-eyebrow{font:500 11px var(--m);letter-spacing:.15em;text-transform:uppercase;color:var(--a)}.vc-header-title{font:800 clamp(24px,4vw,36px)\/1.15 var(--d);margin:10px 0 14px}.vc-header-subtitle{max-width:720px;margin:auto;color:var(--is)}.vc-badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:18px}.vc-badge{font:500 11px var(--m);padding:4px 10px;border:1px solid var(--b);border-radius:4px}.vc-card,.vc-section{background:var(--s);border:1px solid var(--b);border-radius:12px;box-shadow:var(--sh);overflow:hidden;margin-top:28px}.vc-form{padding:24px}.vc-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.vc-field{display:flex;flex-direction:column}.vc-full{grid-column:1\/-1}.vc-label{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--is);margin-bottom:6px}.vc-hint{font-weight:400;text-transform:none;letter-spacing:0;color:var(--im)}.vc-input,.vc-select{width:100%;padding:10px 12px;border:1.5px solid var(--b);border-radius:6px;font:14px var(--f);background:var(--s)}.vc-check{display:flex;gap:10px;padding:12px;border:1px solid var(--bl);border-radius:6px;background:var(--sa);font-size:13px;color:var(--is)}.vc-check input{margin-top:4px}.vc-validation{min-height:22px;color:var(--r);font-size:13px;margin-top:10px}.vc-results{border-top:1px solid var(--bl);background:var(--sa);padding:0;max-height:0;overflow:hidden}.vc-results.vc-visible{max-height:1400px;padding:24px}.vc-result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.vc-rcard{background:var(--s);border:1px solid var(--bl);border-radius:8px;padding:16px}.vc-primary{grid-column:1\/-1;border:2px solid var(--a);background:var(--al)}.vc-rcard-label{font:500 10px var(--m);letter-spacing:.1em;text-transform:uppercase;color:var(--im)}.vc-rcard-value{font:600 20px var(--m);overflow-wrap:anywhere}.vc-primary .vc-rcard-value{font-size:24px;color:var(--a)}.vc-status{grid-column:1\/-1;padding:12px;background:var(--yl);border-left:3px solid var(--y);font-size:13px;color:var(--is)}.vc-section-toggle{width:100%;display:flex;justify-content:space-between;padding:18px 24px;border:0;background:transparent;cursor:pointer;text-align:left}.vc-section-title{font:700 18px var(--d)}.vc-section-body{max-height:0;overflow:hidden}.vc-section.vc-open .vc-section-body{max-height:15000px}.vc-section-inner{padding:0 24px 24px;border-top:1px solid var(--bl)}.vc-theory h3{font:700 17px var(--d);margin:24px 0 8px}.vc-theory p,.vc-theory li{font-size:14px;color:var(--is)}.vc-formula{padding:14px;border:2px solid var(--b);border-radius:6px;background:var(--sa);text-align:center;font:500 14px var(--m);margin:12px 0}.vc-warning{padding:14px;background:var(--yl);border-left:3px solid var(--y);color:var(--is)}.vc-faq-item{border:1px solid var(--bl);margin-top:8px}.vc-faq-q{width:100%;padding:14px;border:0;background:var(--sa);text-align:left;font-weight:600}.vc-faq-a{display:none;padding:14px;color:var(--is)}.vc-faq-item.vc-open .vc-faq-a{display:block}.vc-footer{text-align:center;padding:30px;color:var(--im);font-size:13px}@media(max-width:600px){.vc-grid,.vc-result-grid{grid-template-columns:1fr}.vc-full,.vc-primary,.vc-status{grid-column:1}}<\/style>\n<div class=\"vc-calculator\"><header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Source-gated nominal check<\/p><h1 class=\"vc-header-title\">Documented O-Ring Geometry Check<\/h1><p class=\"vc-header-subtitle\">Check a selected ring and housing record. This page does not invent a standard size,groove,material,pressure rating or acceptance limit.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">No nearest-size selection<\/span><span class=\"vc-badge\">No universal limits<\/span><span class=\"vc-badge\">Not conformity<\/span><\/div><\/header><div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\" novalidate><div class=\"vc-grid\"><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-id\">Nominal free inside diameter d1<\/label><input class=\"vc-input\" id=\"vc-id\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-cs\">Nominal cross-section d2<\/label><input class=\"vc-input\" id=\"vc-cs\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-installed\">Installed ID reference diameter<\/label><input class=\"vc-input\" id=\"vc-installed\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-height\">Entered housing height across cross-section<\/label><input class=\"vc-input\" id=\"vc-height\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-unit\">Length unit<\/label><select class=\"vc-select\" id=\"vc-unit\"><option value=\"mm\">millimetres<\/option><option value=\"in\">inches<\/option><\/select><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-designation\">Exact O-ring designation<\/label><input class=\"vc-input\" id=\"vc-designation\" type=\"text\"><\/div><div class=\"vc-field vc-full\"><label class=\"vc-label\" for=\"vc-source\">Controlled size and housing source<\/label><input class=\"vc-input\" id=\"vc-source\" type=\"text\" placeholder=\"standard\/catalogue edition;table\/row;class;application;material\/housing record\"><\/div><div class=\"vc-field vc-full\"><label class=\"vc-check\" for=\"vc-gate\"><input id=\"vc-gate\" type=\"checkbox\"><span>The designation,d1,d2,tolerances and housing dimensions come from the applicable controlled source.The installed diameter and housing height use the correct geometry for this application.Material,fluid,temperature,pressure,clearance,extrusion,dynamics,swell,tolerances,surface finish and risk controls are checked separately.<\/span><\/label><\/div><\/div><div class=\"vc-validation\" id=\"vc-validation\" role=\"status\" aria-live=\"polite\"><\/div><\/form><div class=\"vc-results\" id=\"vc-results\"><div class=\"vc-result-grid\"><div class=\"vc-rcard vc-primary\"><div class=\"vc-rcard-label\">Selected designation<\/div><div class=\"vc-rcard-value\" id=\"vc-r-designation\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Nominal free OD = d1+2d2<\/div><div class=\"vc-rcard-value\" id=\"vc-r-od\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Signed installed ID change<\/div><div class=\"vc-rcard-value\" id=\"vc-r-change\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Nominal cross-section squeeze<\/div><div class=\"vc-rcard-value\" id=\"vc-r-squeeze\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Nominal centerline diameter<\/div><div class=\"vc-rcard-value\" id=\"vc-r-center\">\u2014<\/div><\/div><div class=\"vc-status\" id=\"vc-r-note\">Nominal arithmetic only.<\/div><\/div><\/div><\/div>\n<div class=\"vc-section vc-open\"><button class=\"vc-section-toggle\" type=\"button\" aria-expanded=\"true\"><span class=\"vc-section-title\">Arithmetic and current ISO boundary<\/span><span>\u2304<\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><div class=\"vc-formula\">ODnom=d1+2d2; ID change=(Dinstalled\u2212d1)\/d1\u00d7100%; nominal squeeze=(d2\u2212h)\/d2\u00d7100%<\/div><p>Positive ID change means nominal stretch;negative means nominal compression.Positive squeeze means the entered height is below nominal cross-section;negative means clearance.No pass\/fail decision is emitted.<\/p><h3>Current parts<\/h3><p>ISO3601-1:2012,edition5,confirmed2022,with Cor1:2012 and Amd1:2019 covers inside diameters,cross-sections,tolerances and designation codes.ISO3601-2:2025,edition3,now covers housing dimensions for general applications and replaced ISO3601-2:2016.ISO3601-5:2015 covers selected elastomeric material specifications and states that required properties\/test methods should be agreed among equipment user\/manufacturer and O-ring supplier\/manufacturer.<\/p><div class=\"vc-warning\"><strong>NEEDS_LICENSED_SOURCE:<\/strong> exact size rows,tolerances,housing tables,squeeze\/stretch\/fill\/clearance limits and application rules.This worksheet does not claim ISO3601 conformity or automatically select a ring.<\/div><h3>Removed unsafe content<\/h3><p>The previous page mixed AS568-style series with an incomplete ISO-labelled list,approximate ID tolerances,a universal groove-width factor1.35,nearest-size selection and universal pressure\/material recommendations.These are removed rather than guessed.<\/p><h3>Sources<\/h3><p><a href=\"https:\/\/www.iso.org\/standard\/58043.html\" target=\"_blank\" rel=\"noopener\">ISO3601-1:2012<\/a>; <a href=\"https:\/\/www.iso.org\/standard\/62415.html\" target=\"_blank\" rel=\"noopener\">Cor1:2012<\/a>; <a href=\"https:\/\/www.iso.org\/standard\/74051.html\" target=\"_blank\" rel=\"noopener\">Amd1:2019<\/a>; <a href=\"https:\/\/www.iso.org\/standard\/85921.html\" target=\"_blank\" rel=\"noopener\">ISO3601-2:2025<\/a>; <a href=\"https:\/\/www.iso.org\/standard\/62902.html\" target=\"_blank\" rel=\"noopener\">ISO3601-5:2015<\/a>.<\/p><\/div><\/div><\/div><div class=\"vc-section\"><button class=\"vc-section-toggle\" type=\"button\" aria-expanded=\"false\"><span class=\"vc-section-title\">Frequently asked questions<\/span><span>\u2304<\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div id=\"vc-faq-list\"><\/div><\/div><\/div><\/div><footer class=\"vc-footer\">\u00a92024\u20132026 Vibromera \u2014 reviewed13 July2026<\/footer><\/div>\n<script>(function(){'use strict';function $(id){return document.getElementById(id)}function read(raw){var t=String(raw||'').trim();if(!t||(t.includes(',')&&t.includes('.')))return null;t=t.replace(',','.');if(!\/^(?:\\d+(?:\\.\\d*)?|\\.\\d+)$\/.test(t))return null;var v=Number(t);return Number.isFinite(v)&&v>0?v:null}function fmt(v){if(Math.abs(v)>=1e8||Math.abs(v)<1e-6)return v.toExponential(6);return Number(v.toPrecision(10)).toString()}function hide(m){$('vc-results').classList.remove('vc-visible');$('vc-validation').textContent=m||''}function calc(){if(!$('vc-designation').value.trim())return hide('Enter the exact O-ring designation.');if(!$('vc-source').value.trim())return hide('Enter the controlled size and housing source.');if(!$('vc-gate').checked)return hide('Confirm the source,geometry and separate engineering checks.');var id=read($('vc-id').value),cs=read($('vc-cs').value),installed=read($('vc-installed').value),height=read($('vc-height').value);if([id,cs,installed,height].some(function(x){return x===null}))return hide('Enter positive complete numbers using a decimal point or comma.');var k=$('vc-unit').value==='in'?25.4:1,idmm=id*k,csmm=cs*k,imm=installed*k,hmm=height*k,od=idmm+2*csmm,change=(imm-idmm)\/idmm*100,squeeze=(csmm-hmm)\/csmm*100,center=idmm+csmm;if(![od,change,squeeze,center].every(Number.isFinite))return hide('The arithmetic did not produce finite results.');$('vc-r-designation').textContent=$('vc-designation').value.trim();$('vc-r-od').textContent=fmt(od)+' mm';$('vc-r-change').textContent=fmt(change)+'% ('+(change>0?'stretch':change<0?'compression':'no nominal change')+')';$('vc-r-squeeze').textContent=fmt(squeeze)+'%';$('vc-r-center').textContent=fmt(center)+' mm';$('vc-r-note').textContent='Nominal arithmetic only.No size selection,tolerance stack,acceptance,material,pressure or housing-conformity decision is calculated.';$('vc-validation').textContent='';$('vc-results').classList.add('vc-visible')}$('vc-form').addEventListener('input',calc);$('vc-form').addEventListener('change',calc);document.querySelectorAll('.vc-section-toggle').forEach(function(b){b.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',String(s.classList.contains('vc-open')))})});var faq=[['Does this choose a size?','No.Enter a controlled designation and dimensions.'],['Does it design a groove?','No.It checks entered nominal geometry only.'],['What does a negative ID change mean?','Nominal compression relative to the entered free ID.'],['Are acceptance limits applied?','No.Use the exact current table,application,material and tolerance stack.']];var l=$('vc-faq-list');faq.forEach(function(x){var w=document.createElement('div');w.className='vc-faq-item';var b=document.createElement('button');b.type='button';b.className='vc-faq-q';b.textContent=x[0];var a=document.createElement('div');a.className='vc-faq-a';a.textContent=x[1];w.appendChild(b);w.appendChild(a);l.appendChild(w)});l.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});hide('')})();<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Check nominal O-ring OD,signed installed ID change and nominal squeeze from controlled dimensions without inventing ISO 3601 sizes,housings or 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