{"product_id":"lapp-skintop-series-25-cable-gland","title":"Lapp SKINTOP Series 25 Cable Gland","description":"\u003cstyle\u003e\n\/* RF.Guru Shopify product page styles (standard) *\/\n.rf-product.rf-pg h2,\n.rf-product.rf-pg h3,\n.rf-product.rf-pg h4 {\n  font-weight: bold;\n  margin-top: 1.2em;\n  line-height: 1.25em;\n}\n\n.rf-product.rf-pg h2 { font-size: 1.6em !important; }\n.rf-product.rf-pg h3 { font-size: 1.3em !important; }\n.rf-product.rf-pg h4 { font-size: 1.12em !important; }\n\n.rf-product.rf-pg p,\n.rf-product.rf-pg li,\n.rf-product.rf-pg td,\n.rf-product.rf-pg th {\n  font-size: 1.02em !important;\n  line-height: 1.6em !important;\n}\n\n.rf-product.rf-pg ul {\n  margin-left: 1.2em;\n  margin-bottom: 0.8em;\n}\n\n.rf-product.rf-pg ul li {\n  margin-bottom: 0.4em;\n}\n\n.rf-product.rf-pg p {\n  margin-bottom: 0.8em;\n}\n\n.rf-product.rf-pg .inline-note {\n  color: #8a8a8a;\n  font-style: italic;\n}\n\n.rf-product.rf-pg table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 0.9em 0;\n}\n\n.rf-product.rf-pg th,\n.rf-product.rf-pg td {\n  border: 1px solid #ddd;\n  padding: 7px 9px;\n  text-align: left;\n  vertical-align: top;\n}\n\n.rf-product.rf-pg thead th {\n  background: #f7f7f7;\n}\n\n.rf-product.rf-pg .complementary-note {\n  background: #f7f7f7;\n  border: 1px solid #ddd;\n  border-radius: 6px;\n  padding: 1em;\n  margin: 1.2em 0;\n}\n\n.rf-product.rf-pg .related-reading {\n  background: #fff8e5;\n  border: 1px solid #f0d78c;\n  border-radius: 6px;\n  padding: 0.8em;\n  margin: 1.2em 0;\n}\n\n.rf-product.rf-pg .related-reading b {\n  color: #b26d00;\n}\n\n.rf-product.rf-pg .related-reading a {\n  display: block;\n  margin-top: 0.35em;\n}\n\n.rf-product.rf-pg .tech-box {\n  background: #eef6fb;\n  border: 1px solid #c6d9e8;\n  border-radius: 6px;\n  padding: 1em;\n  margin-top: 1.5em;\n  margin-bottom: 1.5em;\n  font-size: 0.95em;\n  line-height: 1.5em;\n}\n\n.rf-product.rf-pg .mini-faq {\n  background: #f9f9f9;\n  border: 1px solid #ddd;\n  border-radius: 6px;\n  padding: 1em;\n  margin-top: 2em;\n}\n\n.rf-product.rf-pg .mini-faq h3 {\n  margin-top: 0;\n}\n\n.rf-product.rf-pg .mini-faq ul {\n  list-style: none;\n  padding-left: 0;\n  margin: 0;\n}\n\n.rf-product.rf-pg .mini-faq li {\n  margin-bottom: 0.6em;\n}\n\n.rf-product.rf-pg .mini-faq li b {\n  margin-right: .3em;\n}\n\n.rf-product.rf-pg .author-bio {\n  border-left: 4px solid #ccc;\n  padding-left: 0.8em;\n  margin-top: 1.5em;\n  margin-bottom: 0.5em;\n  font-style: normal;\n  font-size: 0.95em;\n  line-height: 1.4em;\n}\n\n.rf-product.rf-pg .author-bio b a {\n  text-decoration: none;\n}\n\n.rf-product.rf-pg .author-bio b {\n  font-weight: 700;\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rf-product rf-pg\"\u003e\n\n\u003ch2\u003e\u003cb\u003eCoax Cable Feed-Through Gland for N and PL Connectors\u003c\/b\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis coax cable feed-through solution is made for a very practical problem: getting a coax cable into an outdoor enclosure without cutting the cable, removing the connector, or adding an unnecessary RF transition.\u003c\/p\u003e\n\n\u003cp\u003eInstead of using a panel-mounted RF connector, the complete coax cable can be passed through the enclosure wall, including many common N-type or PL\/SO-239 style connector assemblies. The cable entry is then sealed using a high-quality industrial cable gland together with \u003ca href=\"https:\/\/shop.rf.guru\/products\/m-p-silicone-seal-l\"\u003eM\u0026amp;P Silicone-Seal-L cold-shrink silicone sealing tube\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"complementary-note\"\u003e\n  \u003cb\u003ePractical idea:\u003c\/b\u003e keep the coax continuous, avoid extra connector losses, avoid extra RF discontinuities, and still make a clean, weather-resistant cable entry into your antenna box, filter box, preamp enclosure, relay box, or outdoor RF cabinet.\n\u003c\/div\u003e\n\n\u003cdiv class=\"related-reading\"\u003e\n  \u003cb\u003eRelated RF.Guru products and accessories:\u003c\/b\u003e\n  \u003ca href=\"https:\/\/shop.rf.guru\/products\/m-p-silicone-seal-l\"\u003eM\u0026amp;P Silicone-Seal-L cold-shrink coax sealing tube\u003c\/a\u003e\n  \u003ca href=\"https:\/\/shop.rf.guru\/collections\/coax\"\u003eRF.Guru coax, connectors, adapters, and sealing accessories\u003c\/a\u003e\n  \u003ca href=\"https:\/\/shop.rf.guru\/collections\/coaxial-seal\"\u003eCoaxial sealing products for outdoor RF installations\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cb\u003eWhy Use a Feed-Through Gland Instead of a Panel Connector?\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003eA panel-mounted N, BNC, or SO-239 connector is often convenient, but it also adds another RF joint, another place for water ingress, and another point that can loosen, corrode, or introduce mismatch over time.\u003c\/p\u003e\n\n\u003cp\u003eThis feed-through method lets the coax cable remain electrically continuous. The shield, dielectric, and center conductor are not interrupted. For receive antennas, remote filters, active antenna boxes, relay boxes, and outdoor RF distribution systems, that can be the cleaner and more reliable mechanical solution.\u003c\/p\u003e\n\n\u003cdiv class=\"tech-box\"\u003e\n  \u003cb\u003eRF note:\u003c\/b\u003e this is not a bulkhead RF connector. It is a mechanical cable entry. The coax passes through the wall as one continuous cable, so the RF path is not changed by the enclosure wall itself. That makes it especially useful where reliability and weather sealing matter more than having a removable RF connector on the outside of the box.\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cb\u003eDesigned for Pre-Terminated Coax\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe main advantage is that many coax cables can be installed after the RF connector has already been fitted. That is useful when using factory-made coax assemblies, crimped N connectors, PL-259 connectors, or cables where you do not want to redo the connector after routing it into the enclosure.\u003c\/p\u003e\n\n\u003cp\u003eAfter the cable is passed through the gland, the sealing area can be finished with M\u0026amp;P Silicone-Seal-L. The silicone tube collapses around the cable and connector area without flame or heat, creating a tight protective sleeve around the entry zone.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eTypical Applications\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOutdoor antenna feed boxes\u003c\/li\u003e\n  \u003cli\u003eRemote antenna switch enclosures\u003c\/li\u003e\n  \u003cli\u003eReceive antenna preamp or limiter boxes\u003c\/li\u003e\n  \u003cli\u003eFilter and choke enclosures\u003c\/li\u003e\n  \u003cli\u003eSDR or receiver distribution boxes\u003c\/li\u003e\n  \u003cli\u003eTemporary field boxes where the coax must remain connectorized\u003c\/li\u003e\n  \u003cli\u003eOutdoor cabinets where condensation and splash protection matter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eTechnical Overview\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eItem\u003c\/th\u003e\n      \u003cth\u003eTypical specification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGland type\u003c\/td\u003e\n      \u003ctd\u003eIndustrial metric cable gland, nickel-plated brass type\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical gland size\u003c\/td\u003e\n      \u003ctd\u003eM40 x 1.5\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical clamping range\u003c\/td\u003e\n      \u003ctd\u003e19–28 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eThread length\u003c\/td\u003e\n      \u003ctd\u003eApprox. 9 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical wrench size\u003c\/td\u003e\n      \u003ctd\u003e45 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSeal accessory\u003c\/td\u003e\n      \u003ctd\u003eM\u0026amp;P Silicone-Seal-L cold-shrink silicone tubular gasket\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eM\u0026amp;P Silicone-Seal-L length\u003c\/td\u003e\n      \u003ctd\u003eApprox. 14.5 cm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical cable compatibility\u003c\/td\u003e\n      \u003ctd\u003eCommon 10.3 mm and 12.7 mm coax cable classes, depending on connector and final assembly\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInstallation method\u003c\/td\u003e\n      \u003ctd\u003ePass the connectorized coax through the gland, tighten mechanically, then cold-shrink the silicone seal around the cable\/connector entry area\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp class=\"inline-note\"\u003eFinal weather resistance depends on the enclosure wall, hole quality, gland installation, cable diameter, compression, torque, and the quality of the silicone sealing step. Always install with a proper gasket surface and strain relief where needed.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eInstallation Concept\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe gland is installed in the enclosure wall using a correctly sized round hole. The coax cable, including the connector, is then fed through the gland into the enclosure. Once the cable position is correct, the gland is tightened to grip and support the cable.\u003c\/p\u003e\n\n\u003cp\u003eThe M\u0026amp;P Silicone-Seal-L is then positioned over the critical entry area and collapsed by pulling out the inner support strip. The silicone sleeve shrinks around the cable and connector zone, producing a tight, flexible seal without needing heat, flame, tape, or messy self-amalgamating layers.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eWhy Silicone Cold-Shrink Works Well Here\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003eCold-shrink silicone is useful because it remains elastic and keeps pressure on the cable over time. Unlike ordinary tape, it does not rely on adhesive layers alone. It also avoids the risk of heating or damaging coax insulation, connector plating, or nearby plastic enclosure parts.\u003c\/p\u003e\n\n\u003cp\u003eFor outdoor RF installations, this is especially useful around vertical cable entries, exposed antenna boxes, or field installations where wind, rain, condensation, and temperature cycling are part of normal life.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eImportant Limitations\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThis product is a mechanical feed-through and sealing solution, not a lightning protector.\u003c\/li\u003e\n  \u003cli\u003eIt does not replace proper grounding, bonding, surge protection, or strain relief.\u003c\/li\u003e\n  \u003cli\u003eConnector dimensions vary, so always verify the largest outside diameter of your connector assembly before installation.\u003c\/li\u003e\n  \u003cli\u003eThe final seal is only as good as the enclosure wall, drilled hole, gasket surface, and installation method.\u003c\/li\u003e\n  \u003cli\u003eFor permanent outdoor use, route the coax with a drip loop whenever possible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tech-box\"\u003e\n  \u003cb\u003eBest practice:\u003c\/b\u003e do not let the gland carry the full weight of a hanging coax cable. Use a proper cable support or strain relief nearby, especially with heavier coax such as Messi \u0026amp; Paoloni, Ecoflex, Aircell, RG-213 class cable, or similar outdoor feed lines.\n\u003c\/div\u003e\n\n\u003ch3\u003e\u003cb\u003eWho Is This For?\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThis solution is for builders who want a clean and robust cable entry into an RF box without creating another RF connector interface on the outside wall of the enclosure. It is especially useful for amateur radio, receive antenna systems, field stations, repeater accessories, remote switching boxes, and outdoor RF experiments.\u003c\/p\u003e\n\n\u003cp\u003eIt is also useful when the connector has already been professionally installed and you simply do not want to cut it off again just to pass the cable through a box wall.\u003c\/p\u003e\n\n\u003cdiv class=\"mini-faq\"\u003e\n  \u003ch3\u003e\u003cb\u003eMini-FAQ\u003c\/b\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eCan I pass a coax cable with an N or PL connector through it?\u003c\/b\u003e In many practical cases, yes. The exact answer depends on the outside diameter of the connector body and the gland size used. Always check the largest connector diameter before drilling the enclosure.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eDoes this replace a bulkhead RF connector?\u003c\/b\u003e No. This is a mechanical feed-through. The coax remains continuous through the box wall.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eIs this better than tape?\u003c\/b\u003e For many outdoor installations, yes. Cold-shrink silicone keeps elastic pressure around the cable and connector area and does not require flame or heat.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eIs it waterproof?\u003c\/b\u003e The gland and silicone seal can create a very robust weather-resistant entry, but the final result depends on correct installation, enclosure wall quality, gasket compression, cable diameter, and strain relief.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eCan I use it for receive antenna boxes?\u003c\/b\u003e Yes. It is very suitable for RX antenna boxes, preamp boxes, filters, switching boxes, and other outdoor RF enclosures where a continuous coax feed-through is preferred.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eInterested in more technical content? \u003ca href=\"https:\/\/shop.rf.guru\/pages\/subscribe\"\u003eSubscribe to our updates\u003c\/a\u003e for deep-dive RF articles and lab notes.\u003c\/p\u003e\n\n\u003cp\u003eQuestions or experiences to share? Feel free to \u003ca href=\"https:\/\/shop.rf.guru\/pages\/contact\"\u003econtact RF.Guru for practical RF installation advice\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"author-bio\"\u003e\n  \u003cb\u003eWritten by Joeri Van Dooren, \u003ca href=\"https:\/\/on6ure.be\"\u003eON6URE\u003c\/a\u003e\u003c\/b\u003e – RF engineer, antenna designer, and founder of RF.Guru, specializing in high-performance HF\/VHF antennas and RF components.\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I pass a coax cable with an N or PL connector through this feed-through gland?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In many practical cases, yes. The exact answer depends on the largest outside diameter of the connector body and the gland size used. Always check the connector diameter before drilling or installing the enclosure.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does this product replace a bulkhead RF connector?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. It is a mechanical cable feed-through. The coaxial cable remains continuous through the enclosure wall, so no additional RF connector interface is added.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why use silicone cold-shrink with a cable gland?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicone cold-shrink provides a tight, elastic seal around the cable and connector area without flame, heat, or adhesive tape layers. It is useful for outdoor RF installations exposed to rain, condensation, and temperature cycling.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the final assembly waterproof?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The components can create a robust weather-resistant cable entry, but the final result depends on correct installation, enclosure wall quality, gasket compression, cable diameter, torque, and proper strain relief.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this be used for outdoor receive antenna and preamp boxes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. It is well suited for receive antenna boxes, preamp enclosures, filter boxes, relay boxes, and outdoor RF cabinets where the coax should remain continuous through the enclosure wall.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Lapp","offers":[{"title":"Default Title","offer_id":53505003323734,"sku":"53111240+53119140","price":8.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4402\/4764\/files\/CableGland.webp?v=1778161166","url":"https:\/\/shop.rf.guru\/products\/lapp-skintop-series-25-cable-gland","provider":"RF Guru","version":"1.0","type":"link"}