{"product_id":"esi-front-rail-seal-xl-epdm-5-5-ft-fits-0-488-1-gaps-3m-tape-weather-resistant","title":"ESI Front Rail Seal XL EPDM 5.5 ft — Fits 0.488\"–1\" Gaps, 3M Tape Weather-Resistant","description":"\u003cp\u003e\u003cstrong\u003eESI Front Rail Seal XL is a 5½-foot EPDM rubber gasket that fills front-rail height gaps from 0.488\" up to 1\" when installing a truck cap or camper shell.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen mounting a truck cap you often face uneven rail heights between the sidewalls and the front rail. This heavy-duty extruded EPDM seal was designed to bridge taller gaps cleanly, provide a compressible, weather-resistant barrier, and stick firmly in place using industrial-grade 3M 4011 acrylic foam tape. It’s manufactured in the USA to fit common installation needs without frequent replacement after cap removal.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this seal solve uneven front-rail gaps?\u003c\/h3\u003e\n\u003cp\u003eThe ESI Front Rail Seal XL compresses to fill larger height differences at the front rail so a cap or camper shell seats evenly against the truck bed rails. Its profile adds thickness where you need it most and reduces rocking or misalignment during installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to fill gaps from 0.488\" to 1\" high.\u003c\/li\u003e\n  \u003cli\u003e1.00\" nominal width and 1.125\" nominal height for substantial contact area.\u003c\/li\u003e\n  \u003cli\u003eExtruded EPDM rubber offers resilient compression and recovery.\u003c\/li\u003e\n  \u003cli\u003eCompatibility with most common cap rail geometries for simpler mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this seal stay attached when I remove and reattach my cap?\u003c\/h3\u003e\n\u003cp\u003eYes — the seal ships pre-lined with high-quality 3M 4011 acrylic foam tape for long-lasting adhesion to the truck rail. It’s formulated so the gasket remains on the rail through multiple cap removals without needing replacement each time, saving installation time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-applied 3M 4011 tape for strong initial and lasting bond.\u003c\/li\u003e\n  \u003cli\u003eEPDM compound resists creep and maintains adhesion under compression.\u003c\/li\u003e\n  \u003cli\u003eDurable enough to handle repeated cap installation cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I choose the correct ESI seal for different gap heights?\u003c\/h3\u003e\n\u003cp\u003eMeasure the height from the sidewall to the front rail before ordering. Use the XL when the gap measures between 0.488\" and 1.0\". For lower gaps follow ESI’s other seal options to get the proper compression and fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGaps .488\"–1.00\" use Front Rail Seal XL (this product).\u003c\/li\u003e\n  \u003cli\u003eGaps .251\"–.487\" should use the standard Front Rail Seal (different SKU).\u003c\/li\u003e\n  \u003cli\u003eGaps ≤.250\" typically require ESI single-rail EPDM seals on all three rails instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the material and dimensional specs I should know?\u003c\/h3\u003e\n\u003cp\u003eThis seal is extruded from EPDM rubber for UV, ozone and weather resistance and measures approximately 1.00\" wide by 1.125\" tall in cross-section. The kit length is 5.5 feet — long enough for most full-size truck front rails or trimable to fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: EPDM rubber, weather-resistant formulation.\u003c\/li\u003e\n  \u003cli\u003eCross-section: ~1.00\" width × ~1.125\" height.\u003c\/li\u003e\n  \u003cli\u003eLength: 5.5 feet (trim to size as needed).\u003c\/li\u003e\n  \u003cli\u003ePre-applied 3M 4011 acrylic foam tape for attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: This Front Rail Seal XL is aimed at truck owners, RV and camper shell installers, and fabricators who need a durable, compressible solution for taller front-rail gaps. If you measure a height difference from about 0.488\" up to 1.0\" between your sidewalls and front rail and want a U.S.-made EPDM gasket that adheres reliably and endures repeated cap removal, this product is a practical choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What gap heights does the ESI Front Rail Seal XL cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fills height gaps from 0.488\" up to 1.00\" between sidewalls and the front rail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the seal come with adhesive?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it includes factory-applied 3M 4011 acrylic foam tape for durable adhesion.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ESI","offers":[{"title":"Default Title","offer_id":55167430492503,"sku":"B07147Y43J","price":43.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/esi-front-rail-seal-xl-front-view.jpg?v=1790386415","url":"https:\/\/britishgarage.co.uk\/products\/esi-front-rail-seal-xl-epdm-5-5-ft-fits-0-488-1-gaps-3m-tape-weather-resistant","provider":"British Garage","version":"1.0","type":"link"}