{"id":270,"date":"2025-07-19T11:33:25","date_gmt":"2025-07-19T11:33:25","guid":{"rendered":"https:\/\/www.unifitmetalloys.com\/blog\/?p=270"},"modified":"2025-07-13T13:35:03","modified_gmt":"2025-07-13T13:35:03","slug":"spiral-wound-gasket","status":"publish","type":"post","link":"https:\/\/www.unifitmetalloys.com\/blog\/spiral-wound-gasket\/","title":{"rendered":"The Complete Guide to Spiral Wound Gaskets: Types, Materials &#038; Applications"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Introduction to Spiral Wound Gaskets<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What is a Spiral Wound Gasket?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong><a href=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\" data-type=\"link\" data-id=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\">spiral wound gasket<\/a><\/strong> is a type of sealing device used between two flanges to prevent leaks from high-pressure or high-temperature systems. It\u2019s crafted using alternating layers of metal (usually stainless steel) and a filler material like graphite or PTFE. This makes it strong, flexible, and incredibly reliable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why They&#8217;re Preferred in Industrial Applications<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike traditional gaskets, metal wound gaskets combine the best of both worlds\u2014metal\u2019s strength and the sealant flexibility of soft filler. They&#8217;re the go-to option when dealing with extreme environments such as chemical plants, refineries, or offshore rigs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Where They Are Used<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll find spiral-seal gaskets in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heat exchangers<\/li>\n\n\n\n<li>Steam pipelines<\/li>\n\n\n\n<li>Reactor vessels<\/li>\n\n\n\n<li>Flange joints in chemical plants<\/li>\n\n\n\n<li>High-temperature gas pipelines<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Key Components of spiral-seal gaskets<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Metal Winding Strip<\/strong> <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This is the core strength of the gasket, usually made from stainless steel like SS316 or SS304. It provides structural integrity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Filler Material<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Soft materials like <strong>graphite<\/strong>, <strong>PTFE<\/strong>, or <strong>mica<\/strong> are layered with the metal strip to ensure a tight, leak-proof seal even under vibration or temperature shifts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Outer and Inner Rings<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These rings help in centering the gasket and prevent blowout. Inner rings also protect against erosion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Types of Spiral Wound Gaskets<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>With Inner Ring<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Great for preventing inward buckling. Ideal for high-pressure systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>With Outer Ring<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Helps center the gasket during installation and supports compression.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>With Inner &amp; Outer Rings<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Best for critical environments\u2014gives full structural and sealing performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Flange spiral-seal gaskets<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Custom-made to fit ANSI or DIN flanges, often used in oil &amp; gas pipelines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Popular Materials Used in industrial gaskets<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>SS316 Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Offers excellent corrosion resistance and heat tolerance. Great for chemical plants and seawater pipelines.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>SS304 Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Affordable, corrosion-resistant, and widely used in food and water applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>PTFE Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PTFE is chemically inert\u2014making it perfect for aggressive acids or sensitive pharmaceutical media.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Graphite Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Highly flexible, high-temperature capable. It handles up to 550\u00b0C and resists chemicals well.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Branded Gaskets Comparison<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Flexitallic Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Known for durability and precision. Used globally in critical applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Teadit Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reliable sealing under stress. Commonly used in petrochemical plants.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Garlock Spiral Wound Gasket<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Premium option with custom designs and extensive chemical resistance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Applications by Industry<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Petrochemical &amp; Refining<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">High-temp and pressure <a href=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\" data-type=\"link\" data-id=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\"><strong>gaskets<\/strong><\/a> are essential in reactors and heat exchangers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Oil &amp; Gas<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Handles fluctuating pressures and harsh media in upstream and downstream processes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Power Plants<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Used in boiler flanges and steam lines\u2014especially graphite-filled types.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Marine &amp; Offshore<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SS316 spiral gaskets are perfect for seawater pipelines and offshore oil rigs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Food &amp; Pharma<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PTFE gaskets meet hygiene standards while delivering excellent sealing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Spiral Wound Gasket Standards &amp; Compliance<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-20-metallic-gaskets-flanges-ring-joint-spiral-wound-type\" data-type=\"link\" data-id=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-20-metallic-gaskets-flanges-ring-joint-spiral-wound-type\" target=\"_blank\" rel=\"noopener\">ASME B16.20<\/a><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The most widely used specification for gasket for high-pressure applications\u2014covers sizes, materials, and tolerances.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>DIN &amp; EN Standards<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Essential for European clients\u2014Unifit complies with all.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Custom Sizes &amp; Certifications<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">From \u00bd\u201d to 60\u201d and beyond\u2014we offer full MTCs, third-party inspections, and ISO certifications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Choose Unifit Metalloys as Your Supplier<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Custom Manufacturing<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Get spiral-seal gaskets made for your specs\u2014any shape, any standard.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Quick Turnaround<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We maintain stock of popular sizes and ship globally in record time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Global Delivery<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Serving clients in 40+ countries with prompt logistics and secure packaging.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How to Select the Right Spiral Wound Gasket<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Know Your Pressure and Temperature<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Higher the stress, tougher the gasket should be\u2014use graphite or SS316 for harsh environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Match the Filler with Media<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PTFE for acids, graphite for high-temp steam, mica for extreme pressure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Select the Right Metal<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SS316 for corrosion, SS304 for economy, titanium for specialized chemical service.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Final Thoughts<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>spiral wound gasket<\/strong> isn\u2019t just a ring\u2014it\u2019s the backbone of leak-proof piping systems. Whether you&#8217;re in petrochemicals, marine, or pharma, choosing the right type and material can protect your operation from costly downtimes. At <strong><a href=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\" data-type=\"link\" data-id=\"https:\/\/www.unifitmetalloys.com\/gaskets-products.html\">Unifit Metalloys<\/a><\/strong>, we don\u2019t just sell gaskets\u2014we help you seal your success.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQs<\/strong><br><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1752320188299\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Q1: What is the most common spiral wound gasket size?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Most common sizes range between \u00bd\u201d to 24\u201d for industrial pipelines.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1752320226921\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Q2: Which filler is better\u2014PTFE or graphite?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Graphite is best for high temperatures. PTFE is ideal for corrosive chemicals and food-grade systems.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1752320248201\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Q3: Can Unifit supply custom spiral wound gaskets?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, we specialize in custom builds with short lead times and global shipping.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1752320271073\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Q4: What\u2019s the best spiral wound gasket for seawater?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>SS316 spiral wound with PTFE filler is perfect for seawater applications.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1752320294585\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><strong>Q5: Are spiral wound gaskets reusable?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>No. They are designed for single-use to maintain seal integrity.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction to Spiral Wound Gaskets What is a Spiral Wound Gasket? A spiral wound gasket is a type of sealing device used between two flanges to prevent leaks from high-pressure or high-temperature systems. It\u2019s crafted using alternating layers of metal (usually stainless steel) and a filler material like graphite or PTFE. This makes it strong, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":278,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gaskets"],"jetpack_featured_media_url":"https:\/\/www.unifitmetalloys.com\/blog\/wp-content\/uploads\/2025\/07\/spiral-wound-gasket-by-unifitmetalloys.png","_links":{"self":[{"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/posts\/270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/comments?post=270"}],"version-history":[{"count":3,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/posts\/270\/revisions"}],"predecessor-version":[{"id":280,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/posts\/270\/revisions\/280"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/media\/278"}],"wp:attachment":[{"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/media?parent=270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/categories?post=270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.unifitmetalloys.com\/blog\/wp-json\/wp\/v2\/tags?post=270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}