{"product_id":"horticultural-poly-grommets-precision-leak-proof-seals-bulk-bags","title":"Horticultural Poly Grommets – Precision Leak-Proof Seals (Bulk Bags)","description":"\u003csection\u003e\n  \u003ch3\u003eHorticultural Poly Grommets – Precision Leak-Proof Seals (Bulk Bags)\u003c\/h3\u003e\n  \u003cp\u003eCreating a professional manifold or reservoir system requires secure, watertight connection points where irrigation lines interface with rigid PVC pipes or nutrient tanks. Our range of Horticultural Poly Grommets is the industry-standard solution for preventing leaks and protecting your plumbing from sharp edges. Designed to provide a compressed, high-friction seal, these grommets allow you to \"tap\" into main distribution lines or reservoir walls with absolute confidence. Whether you are installing 4mm micro-tubing or high-volume 25mm supply lines, these grommets ensure a permanent, vibration-resistant seat that maintains system integrity under the constant pressure of automated hydroponic cycles.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Sealing pipe entries into reservoirs, tapping micro-lines into PVC manifolds, protecting tubing from sharp container edges, and creating watertight bulkhead transitions.\u003c\/p\u003e\n  \n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Compression Sealing:\u003c\/strong\u003e Manufactured from premium, flexible elastomers that expand when a fitting is inserted, creating a high-pressure, watertight \"sandwich\" seal against the wall of the pipe or tank.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVibration \u0026amp; Stress Resistance:\u003c\/strong\u003e The pliable material absorbs the mechanical vibrations from high-powered pumps and protects poly tubing from friction-related wear against rigid surfaces.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eChemical \u0026amp; Nutrient Stable:\u003c\/strong\u003e Engineered to withstand constant exposure to concentrated mineral salts, organic additives, and pH adjusters without degrading, hardening, or leaching harmful chemicals.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUV-Stabilised Longevity:\u003c\/strong\u003e Built for the rigours of the Australian grow room, these grommets resist the drying and cracking effects of intense HID\/LED lighting and direct sunlight.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAesthetic \u0026amp; Functional Opacity:\u003c\/strong\u003e The deep black finish ensures 100% light blockage at the entry point, preventing algae growth inside your manifold or reservoir.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProfessional Bulk Quantities:\u003c\/strong\u003e Supplied in high-count bags to ensure you have an ample supply for large-scale commercial builds and facility maintenance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eAvailable Configurations\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e6mm Grommet (Bag of 100):\u003c\/strong\u003e The essential seal for 6mm micro-tubing and high-flow dripper transitions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8mm Grommet (Bag of 20):\u003c\/strong\u003e Precision seals for specialised micro-fittings and intermediate feeder lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e13mm \/ 19mm \/ 25mm Grommets (Bags of 50):\u003c\/strong\u003e Heavy-duty seals for standard Australian poly pipe sizes; ideal for reservoir outlets and PVC manifold take-offs.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e UV-Resistant Synthetic Rubber \/ Elastomer\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black (Light-Proof)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Hydroponics, Aquaponics, and Reservoir Plumbing\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitting Type:\u003c\/strong\u003e Compression Bulkhead Grommet\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Hole Sizing:\u003c\/strong\u003e For a perfect seal, use a sharp step-drill or hole saw to create a clean, burr-free entry point. The hole should be slightly smaller than the outer diameter of the grommet's \"waist\" to ensure maximum compression.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLubricated Insertion:\u003c\/strong\u003e To make inserting your barbed fittings or pipe through the grommet easier, apply a small amount of water or a food-grade silicone lubricant. This allows the fitting to slide through without distorting the grommet's seat.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSeal Inspection:\u003c\/strong\u003e During your routine reservoir cleaning, check the grommets for any signs of salt crusting. While these are designed for long-term use, ensuring they remain seated flush against the tank wall will prevent slow-leak \"weeping\" over time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReservoir Outlets:\u003c\/strong\u003e Creating a leak-proof exit point for your pump’s main supply line at the base of a nutrient tank.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePVC Manifolds:\u003c\/strong\u003e Tapping dozens of 6mm or 13mm lines into a 40mm or 50mm PVC \"spine\" for large-scale NFT or top-feed systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCustom Float Valves:\u003c\/strong\u003e Providing a secure, watertight seal for auto-top-up systems in mixing tanks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"6mm Grommet (Bag of 100)","offer_id":48416206258276,"sku":"4498","price":47.9,"currency_code":"AUD","in_stock":true},{"title":"8mm Grommet (Bag of 20)","offer_id":48416206291044,"sku":"5728","price":26.99,"currency_code":"AUD","in_stock":true},{"title":"13mm Grommet (Bag 50)","offer_id":48416206323812,"sku":"8913","price":4.9,"currency_code":"AUD","in_stock":true},{"title":"19mm Grommet (Bag 50)","offer_id":48416206356580,"sku":"4089","price":23.9,"currency_code":"AUD","in_stock":true},{"title":"25mm Grommet (Bag 50)","offer_id":48416206389348,"sku":"8945","price":27.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay15_2026_01_14_52AM.png?v=1778779171","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/horticultural-poly-grommets-precision-leak-proof-seals-bulk-bags","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}