{"title":"CPI Grommets","description":"CPI tank grommets \/ flex fittings.","products":[{"product_id":"rv-tank-fittings2-flex-fitting-2-3-4-hole-size","title":"2\" Flex Fitting 2 3\/4\" Hole Size Part # 92","description":"\u003cp\u003e2\" Flex Grommet Fitting (2 3\/4\" Hole Size)\u003c\/p\u003e\n\u003cp\u003ePart # 92 (500124)\u003c\/p\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":32789646311483,"sku":"92","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/rv-tank-fittings2-flex-fitting-2-3-4-hole-size-shopify-1.jpg?v=1779181527"},{"product_id":"cpi-3-flex-black-rubber-tank-fitting-3-7-8-hole-size-part-93-500125","title":"CPI - 3\" Flex Black Rubber Tank Fitting - 3 7\/8\" Hole Size - Part # 93 (500125)","description":"\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #1d9bf0; padding: 15px; margin-bottom: 20px;\"\u003e\u003cp style=\"margin: 0; color: #1d9bf0; font-weight: bold;\"\u003e\u003cstrong\u003e✓ ElkhartRVParts.com - The Only Authorized Place for CPI Tank Fittings\u003c\/strong\u003e\u003c\/p\u003e\u003c\/div\u003e\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #10b981; padding: 15px; margin-bottom: 20px;\"\u003e\u003cp style=\"margin: 0; color: #10b981; font-weight: bold;\"\u003e\u003cstrong\u003e✓ 100% Verified Authentic OEM Grade Part\u003c\/strong\u003e\u003c\/p\u003e\u003c\/div\u003e\u003ch2\u003eCPI 3\" Flex Black Rubber Tank Fitting - Professional Grade RV Plumbing Solution\u003c\/h2\u003e\u003cp\u003eThe CPI 3\" Flex Black Rubber Tank Fitting (Part # 93 \/ 500125) is a professional-grade grommet designed specifically for plumbing connections into RV black water and grey water holding tanks. This flexible rubber fitting accommodates a 3 7\/8\" hole size and provides a secure, leak-resistant seal for 3-inch plumbing applications.\u003c\/p\u003e\u003ch2\u003eWhy Choose This CPI Flex Tank Fitting\u003c\/h2\u003e\u003cp\u003eCPI has been manufacturing premium RV tank fittings for decades, and this 3\" flex fitting represents their commitment to quality and reliability. The flexible black rubber construction allows for easier installation while maintaining a watertight seal, even when dealing with slight misalignments or tank wall irregularities. This fitting is engineered to withstand the harsh conditions of RV waste systems, including temperature fluctuations, chemical exposure, and constant vibration during travel.\u003c\/p\u003e\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\u003cp\u003eThis 3\" flex fitting features durable black rubber construction that resists cracking and degradation from waste tank chemicals. The flexible design accommodates minor installation variations and provides stress relief that rigid fittings cannot match. With a 3 7\/8\" hole size requirement, this fitting installs quickly using standard hole saws, and the rubber material creates a compression seal that prevents leaks without requiring extensive sealant application.\u003c\/p\u003e\u003cp\u003eThe fitting's 3-inch diameter is ideal for main tank outlets, drain connections, and larger vent applications. The black rubber material is UV-resistant and maintains its flexibility across a wide temperature range, ensuring reliable performance whether you're camping in Arizona summers or Minnesota winters.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 93 (500125)\u003cbr\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e CPI\u003cbr\u003e\u003cstrong\u003eFitting Diameter:\u003c\/strong\u003e 3 inches\u003cbr\u003e\u003cstrong\u003eRequired Hole Size:\u003c\/strong\u003e 3 7\/8 inches (3.875\")\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Black Rubber\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e RV Black \u0026amp; Grey Water Holding Tanks\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 lbs\u003cbr\u003e\u003cstrong\u003eBarcode:\u003c\/strong\u003e 46409787\u003c\/p\u003e\u003ch2\u003eInstallation and Compatibility\u003c\/h2\u003e\u003cp\u003eThis flex fitting is designed for use with standard 3-inch PVC or ABS plumbing pipes commonly found in RV waste systems. Installation requires drilling a 3 7\/8\" hole in the tank wall, inserting the fitting, and securing it according to manufacturer specifications. The flexible rubber design allows for some angular adjustment during installation, making it easier to align with existing plumbing runs.\u003c\/p\u003e\u003cp\u003eThis fitting is compatible with most RV holding tank materials including polyethylene, polypropylene, and ABS plastic tanks. It works with both black water and grey water applications and can be used for tank outlets, drain connections, or large-diameter vent installations.\u003c\/p\u003e\u003ch2\u003eComplete Your Tank Fitting Setup\u003c\/h2\u003e\u003cp\u003eFor comprehensive tank plumbing solutions, consider these compatible CPI fittings: The \u003ca href=\"https:\/\/elkhartrvparts.com\/products\/cpi-rv-tank-grommet-fitting-1-5-inch-2-25-hole-part-91\" style=\"color: #dc2626; font-weight: bold;\"\u003eCPI 1-1\/2\" Tank Grommet Fitting (Part 91)\u003c\/a\u003e is perfect for smaller inlet or vent connections. For 2-inch applications, the \u003ca href=\"https:\/\/elkhartrvparts.com\/products\/rv-tank-fittings2-flex-fitting-2-3-4-hole-size\" style=\"color: #dc2626; font-weight: bold;\"\u003e2\" Flex Fitting (Part 92)\u003c\/a\u003e offers the same flexible design in a smaller size. Don't forget \u003ca href=\"https:\/\/elkhartrvparts.com\/products\/adcoseal-b-100-butyl-rubber-sealent\" style=\"color: #dc2626; font-weight: bold;\"\u003especialized RV tank sealant\u003c\/a\u003e to ensure a completely leak-proof installation.\u003c\/p\u003e\u003ch2\u003eCompare 3\" Tank Fitting Options\u003c\/h2\u003e\u003cdiv style=\"overflow-x: auto; margin: 20px 0;\"\u003e\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e5e7eb;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background-color: #dc2626; color: white;\"\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eType\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eHole Size\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eBest For\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eView Details\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #fef2f2; border-left: 4px solid #dc2626;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb; font-weight: bold;\"\u003eCPI Part 93\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eFlex Rubber Fitting\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e3 7\/8\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e93 (500125)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eFlexible installation, main outlets\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCurrent Product\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb; font-weight: bold;\"\u003eUniseal U300\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eGrommet Seal\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e4\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eU300\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eWatertight seal, Schedule 40 PVC\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/3-uniseal-grommet-black-u300\" style=\"color: #dc2626; font-weight: bold;\"\u003eView Details\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb; font-weight: bold;\"\u003eCPI Part 92\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eFlex Rubber Fitting\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e2 3\/4\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e92\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e2\" applications, smaller outlets\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/rv-tank-fittings2-flex-fitting-2-3-4-hole-size\" style=\"color: #dc2626; font-weight: bold;\"\u003eView Details\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp style=\"background-color: #f3f4f6; border-left: 4px solid #dc2626; padding: 15px; margin-top: 15px;\"\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Choose flex rubber fittings like the CPI Part 93 when you need installation flexibility and stress relief. Uniseal grommets work best when you need a permanent watertight seal with Schedule 40 PVC pipe.\u003c\/p\u003e\u003ch2\u003eWhy Buy From Elkhart RV Parts\u003c\/h2\u003e\u003cp\u003eWhen you purchase this CPI 3\" flex fitting from Elkhart RV Parts, you're getting an authentic OEM-grade component backed by our commitment to quality. We stock genuine CPI parts and ship them quickly so you can complete your RV repairs without delay. Our team understands RV plumbing systems and can help ensure you're ordering the correct fitting for your specific application.\u003c\/p\u003e\u003cp\u003eWith an average customer rating of 4.6 out of 5 stars based on 9 reviews, this fitting has proven its reliability in real-world RV applications. Customers appreciate the quality construction, ease of installation, and long-lasting performance.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat size hole do I need for this 3\" flex fitting?\u003c\/h3\u003e\u003cp\u003eThis fitting requires a 3 7\/8\" (3.875 inch) hole. Use a 3 7\/8\" hole saw for accurate installation.\u003c\/p\u003e\u003ch3\u003eCan this fitting be used for both black and grey water tanks?\u003c\/h3\u003e\u003cp\u003eYes, this CPI flex fitting is suitable for both black water and grey water holding tank applications.\u003c\/p\u003e\u003ch3\u003eDo I need sealant with this rubber fitting?\u003c\/h3\u003e\u003cp\u003eWhile the rubber creates a compression seal, we recommend using specialized RV tank sealant for maximum leak protection, especially on older tanks or in high-stress applications.\u003c\/p\u003e\u003ch3\u003eWill this work with 3\" PVC pipe?\u003c\/h3\u003e\u003cp\u003eYes, this fitting is designed to work with standard 3-inch PVC or ABS plumbing pipes commonly used in RV waste systems.\u003c\/p\u003e\u003ch2\u003eOrder Your CPI 3\" Flex Tank Fitting Today\u003c\/h2\u003e\u003cp\u003eDon't let a faulty tank fitting compromise your RV's waste system. Order this genuine CPI 3\" flex black rubber tank fitting today and enjoy fast shipping, authentic OEM quality, and the peace of mind that comes with proper RV plumbing components. For questions about compatibility or installation, use our AI Live Chat for expert product guidance.\u003c\/p\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":32789646409787,"sku":"93","price":5.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/cpi-3-flex-black-rubber-tank-fitting-3-7-8-hole-size-part-93-500125-shopify-1.jpg?v=1779179884"},{"product_id":"cpi-rv-tank-grommet-fitting-1-5-inch-2-25-hole-part-91","title":"CPI - 1-1\/2\" RV Tank Grommet Fitting - 2-1\/4\" Hole - Part 91 (500123)","description":"\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #1d9bf0; padding: 15px; margin-bottom: 20px;\"\u003e\u003cp style=\"margin: 0; color: #1d9bf0; font-weight: bold;\"\u003e✓ ElkhartRVParts.com - The Only Authorized Place for CPI Parts\u003c\/p\u003e\u003c\/div\u003e\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #10b981; padding: 15px; margin-bottom: 20px;\"\u003e\u003cp style=\"margin: 0; color: #10b981; font-weight: bold;\"\u003e✓ 100% Verified Authentic OEM Grade Part\u003c\/p\u003e\u003c\/div\u003e\u003ch2\u003eCPI 1-1\/2\" Flex Rubber Grommet Tank Fitting - Part 91\u003c\/h2\u003e\u003cp\u003eThis professional-grade 1-1\/2\" slip flex rubber grommet fitting is specifically engineered for RV fresh water tanks and holding tanks. Manufactured by CPI, a trusted leader in RV tank components, this grommet fitting (Part # 91 \/ 500123) provides a secure, leak-resistant connection for 2-1\/4\" hole installations.\u003c\/p\u003e\u003ch3\u003eWhy Choose This CPI RV Tank Grommet Fitting?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentic CPI Quality:\u003c\/strong\u003e 100% genuine CPI part, not a generic substitute - ensures proper fit and long-lasting performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Rubber Construction:\u003c\/strong\u003e Premium rubber material flexes to accommodate tank movement and vibration during travel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Resistant Design:\u003c\/strong\u003e Creates a watertight seal to prevent costly leaks in your RV's water system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Slip-fit design makes installation straightforward for DIY RV owners and professional technicians\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Works with both fresh water and holding tanks for maximum utility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFitting Size: 1-1\/2\" slip connection\u003c\/li\u003e\n\u003cli\u003eRequired Hole Size: 2-1\/4\" diameter\u003c\/li\u003e\n\u003cli\u003eMaterial: Flexible rubber compound\u003c\/li\u003e\n\u003cli\u003ePart Numbers: 91, 500123\u003c\/li\u003e\n\u003cli\u003eManufacturer: CPI\u003c\/li\u003e\n\u003cli\u003eApplication: RV fresh water tanks, RV holding tanks\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Canada\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Applications \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eThis grommet fitting is ideal for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRV fresh water tank installations and repairs\u003c\/li\u003e\n\u003cli\u003eRV black water holding tank connections\u003c\/li\u003e\n\u003cli\u003eRV grey water holding tank fittings\u003c\/li\u003e\n\u003cli\u003eCamper and motorhome water system upgrades\u003c\/li\u003e\n\u003cli\u003eTravel trailer tank replacements\u003c\/li\u003e\n\u003cli\u003eFifth wheel plumbing repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation \u0026amp; Use\u003c\/h3\u003e\u003cp\u003eThe 1-1\/2\" flex rubber grommet fitting installs into a 2-1\/4\" hole drilled in your RV tank. The flexible rubber design compresses to create a secure, leak-proof seal while allowing for slight tank flexing during travel. Perfect for connecting drain lines, fill lines, or vent lines to your RV's water or waste tanks.\u003c\/p\u003e\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #dc2626; padding: 15px; margin: 20px 0;\"\u003e\n\u003cp style=\"margin: 0; color: #dc2626; font-weight: bold;\"\u003e⚠️ Professional Installation Recommended\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0 0 0; color: #4b5563;\"\u003eWhile this is a DIY-friendly part, proper installation is critical for preventing leaks. If you're unsure about installation, consult with an RV technician.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch3\u003eWhy Buy From Elkhart RV Parts?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✓ Authorized CPI dealer - guaranteed authentic parts\u003c\/li\u003e\n\u003cli\u003e✓ Fast shipping from our Indiana warehouse\u003c\/li\u003e\n\u003cli\u003e✓ Expert RV parts knowledge and support\u003c\/li\u003e\n\u003cli\u003e✓ Competitive pricing on genuine OEM components\u003c\/li\u003e\n\u003cli\u003e✓ Same-day shipping on in-stock orders\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNeed help identifying the right fitting?\u003c\/strong\u003e Use our AI Live Chat for instant product assistance and compatibility verification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrder your authentic CPI 1-1\/2\" RV tank grommet fitting today and ensure a leak-free water system in your RV!\u003c\/strong\u003e\u003c\/p\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":42431903400088,"sku":"91","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/cpi-rv-tank-grommet-fitting-1-5-inch-2-25-hole-part-91-shopify-1.jpg?v=1779180719"},{"product_id":"rubber-tank-grommet-2-slip-2-5-8","title":"Rubber Tank Grommet 2\" (Slip 2-5\/8\")","description":"\u003cul\u003e\n\u003cli\u003ePlumbing fittings for RV's are designed with you in mind. Designed to work in a vast array of plumbing applications\u003c\/li\u003e\n\u003cli\u003eMade with a thick amount of material for strength and durability\u003c\/li\u003e\n\u003cli\u003eComes ready for install\u003c\/li\u003e\n\u003cli\u003eConsider a high quality and durable holding tank or fresh water tank for your replacement needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e2\" Rubber Grommet Fitting\u003c\/p\u003e","brand":"CPI","offers":[{"title":"Default Title","offer_id":46351101952152,"sku":"CPI92","price":5.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/rubber-tank-grommet-2-slip-2-5-8-shopify-1.jpg?v=1779181103"}],"url":"https:\/\/elkhartrvparts.com\/en-ca\/collections\/cpi-grommets.oembed","provider":"Elkhart RV Parts","version":"1.0","type":"link"}