{"id":15141,"date":"2025-11-21T17:53:59","date_gmt":"2025-11-21T16:53:59","guid":{"rendered":"https:\/\/majk.sk\/extruded-profile-seals\/seals-made-of-microporous-rubbers\/"},"modified":"2025-11-21T17:54:42","modified_gmt":"2025-11-21T16:54:42","slug":"seals-made-of-microporous-rubbers","status":"publish","type":"page","link":"https:\/\/majk.sk\/en\/extruded-profile-seals\/seals-made-of-microporous-rubbers\/","title":{"rendered":"Seals made of microporous rubbers"},"content":{"rendered":"\t\t
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Microporous rubber gaskets (SPONGE)<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Microporous “sponge” gaskets<\/strong> are sealing materials with a foam, sponge-like structure, i.e. with many small air cavities inside. This type of structure gives them completely different properties than compact (solid) rubbers. <\/p>\n

Main features of<\/strong> microporous (sponge) seals:<\/p>\n

Low density<\/strong><\/em> – are light and soft.
Excellent compressibility<\/strong><\/em> – easy to squeeze and return to their original shape when released.
Good sealing at low pressures<\/strong> <\/em>– Suitable where high tightening force cannot be used.
Insulating properties<\/strong><\/em> – Thermal and acoustic insulation is often better than compact rubber.
Resistance by material<\/strong><\/em> – can be EPDM, silicone, neoprene, NR, etc.; properties depend on the rubber itself.<\/p>\n

They are produced either:<\/strong><\/p>\n

by chemical foaming<\/strong><\/em> during vulcanisation (a blowing agent is added to the mixture),
mechanical foaming<\/strong><\/em>where gas is introduced into the polymer during mixing.<\/p>\n

The result is a structure similar to sponge<\/strong><\/em> – from fine microcells to coarser pores, depending on the type of product.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What are actually microporous (SPONGE) seals ? <\/h1>\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tDescription\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tEPDM-microporous rubber profiles are mainly used as seals for switchboards, light fittings, windows, air-conditioning, cable expansion inserts, in structural constructions (against resonance, vibrations), in floor expansion, in the automotive industry, but also in other areas of industry.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tProperties\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tThey are characterized by reliability and good physical-mechanical properties under normal weather conditions at operating temperatures of -40 \u00b0C to +70 \u00b0C.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tMaterial basis\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tThey are manufactured using a rubber EPDM compound (EPDM+SBR or pure EPDM) with a specific gravity of 0.3 to 0.8 g\/cm3 and a hardness generally around 20-40 \u00b0ShA. In addition to standard materials for various demanding applications, we can also produce peroxide compounds (sulphur-free), flame retardant profiles in accordance with (NF F 16-101, ISO 45545), products in accordance with TL1010 and FMVSS 302, waterproofing materials in accordance with EN681, seals for flood walls, automotive seals in accordance with VW 2.8.1 \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tVersions\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tThey are manufactured in several basic shapes, either as square, rectangle, circular gasket, intermediate ring and various special cavity or reed gaskets. The seals can also be manufactured as self-adhesive. \n\n\n\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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SAMPLES OF PROFILES<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\tAre you interested in microporous (sponge) profiles?\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t
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\n\t\t\t\t\t\t\tContact us!\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\tSend inquiry\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\t\tInterested in a catalogue?\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t
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\n\t\t\t\t\t\t\tDownload catalog\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\tDownload\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Microporous rubber gaskets (SPONGE) Microporous “sponge” gaskets are sealing materials with a foam, sponge-like structure, i.e. with many small air cavities inside. This type of structure gives them completely different properties than compact (solid) rubbers. Main features of microporous (sponge) seals: Low density – are light and soft.Excellent compressibility – easy to squeeze and return […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":12974,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":null,"ast-site-content-layout":"normal-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":null,"ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-15141","page","type-page","status-publish","hentry"],"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Radoslav Kukula","author_link":"https:\/\/majk.sk\/en\/author\/radoslavkukula\/"},"uagb_comment_info":0,"uagb_excerpt":"Microporous rubber gaskets (SPONGE) Microporous “sponge” gaskets are sealing materials with a foam, sponge-like structure, i.e. with many small air cavities inside. This type of structure gives them completely different properties than compact (solid) rubbers. Main features of microporous (sponge) seals: Low density – are light and soft.Excellent compressibility – easy to squeeze and return…","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/pages\/15141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/comments?post=15141"}],"version-history":[{"count":0,"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/pages\/15141\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/pages\/12974"}],"wp:attachment":[{"href":"https:\/\/majk.sk\/en\/wp-json\/wp\/v2\/media?parent=15141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}