{"product_id":"sealing-ring-for-75mm-semi-rigid-radial-duct","title":"Sealing Ring for 75mm Semi-Rigid Radial Duct","description":"\u003c!-- SEO Product Name: Casavent SRD-SR-75 Spare Sealing Ring for 75mm Semi-Rigid Radial Duct --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eCasavent SRD-SR-75\u003c\/strong\u003e is a synthetic rubber sealing ring sized for \u003cstrong\u003e75mm semi-rigid radial ducting\u003c\/strong\u003e, used to provide an airtight connection between the duct and its adapter, flange, or plenum spigot. Fitting over the outside of the duct at the connection point, the ring is compressed by the lock ring or connector to seal the joint.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eKeeping a few spares on hand is useful for any installation, since a properly seated sealing ring is what allows the push-fit duct connections throughout a radial system to maintain their air-tightness rating over time.\u003c\/p\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"margin: 20px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding-right: 8px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #008377CF; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; padding: 14px 6px;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #fff; line-height: 1.2;\"\u003e75mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 11px; font-weight: 400; color: #fff; margin-top: 4px; opacity: 0.95;\"\u003eDuct Connection Size\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding-right: 8px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #008377CF; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; padding: 14px 6px;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #fff; line-height: 1.2;\"\u003e79mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 11px; font-weight: 400; color: #fff; margin-top: 4px; opacity: 0.95;\"\u003eOuter Diameter\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding-right: 8px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #008377CF; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; padding: 14px 6px;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #fff; line-height: 1.2;\"\u003eSynthetic Rubber\u003c\/div\u003e\n\u003cdiv style=\"font-size: 11px; font-weight: 400; color: #fff; margin-top: 4px; opacity: 0.95;\"\u003eMaterial\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #008377CF; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; padding: 14px 6px;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #fff; line-height: 1.2;\"\u003e-20 to +60°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 11px; font-weight: 400; color: #fff; margin-top: 4px; opacity: 0.95;\"\u003eOperating Temperature\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"margin: 18px 0; background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 14px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; font-size: 14px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eSystem Component\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThis sealing ring is a \u003cstrong\u003esmall spare\/accessory part\u003c\/strong\u003e used at duct-to-fitting connection points — it does not include the duct, adapter, or flange itself.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\" style=\"padding-right: 10px; vertical-align: top; padding-bottom: 12px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; font-size: 15px; margin-bottom: 6px;\"\u003eAirtight Duct Connections\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #2b2b2b; line-height: 1.6;\"\u003ePositioned over the outside of the duct at each connection point, the ring is \u003cstrong\u003ecompressed by the lock ring or connector\u003c\/strong\u003e to form an airtight seal between duct and fitting.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003ctd width=\"50%\" style=\"vertical-align: top; padding-bottom: 12px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; font-size: 15px; margin-bottom: 6px;\"\u003eSynthetic Rubber Construction\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #2b2b2b; line-height: 1.6;\"\u003eMade from \u003cstrong\u003esynthetic rubber\u003c\/strong\u003e, the ring maintains its sealing properties across a working temperature range of -20°C to +60°C.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\" style=\"padding-right: 10px; vertical-align: top; padding-bottom: 12px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; font-size: 15px; margin-bottom: 6px;\"\u003eSimple Push-Fit Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #2b2b2b; line-height: 1.6;\"\u003eThe ring requires \u003cstrong\u003eno tools or adhesives\u003c\/strong\u003e — it is slipped over the duct end before the connector or lock ring is fitted.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003ctd width=\"50%\" style=\"vertical-align: top; padding-bottom: 12px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; font-size: 15px; margin-bottom: 6px;\"\u003eUseful Spare Part\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #2b2b2b; line-height: 1.6;\"\u003eKeeping \u003cstrong\u003espare sealing rings\u003c\/strong\u003e on site means a damaged or displaced ring can be replaced quickly without holding up an installation.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\" style=\"vertical-align: top; padding-bottom: 12px;\"\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; font-size: 15px; margin-bottom: 6px;\"\u003eMatches 75mm Duct Diameter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #2b2b2b; line-height: 1.6;\"\u003eSized to fit \u003cstrong\u003e75mm semi-rigid radial ducting\u003c\/strong\u003e connection points throughout a radial MVHR or MEV system.\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable role=\"presentation\" width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" style=\"border-collapse: collapse; margin: 20px 0; border: 1px solid #E0E0E0; border-radius: 6px; overflow: hidden;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.05em; text-transform: uppercase;\"\u003eProduct Overview\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003eCasavent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eProduct Code\u003c\/td\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003eSRD-SR-75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eDescription\u003c\/td\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003eSpare Sealing Ring for 75mm Semi-Rigid Radial Duct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eFitting Type\u003c\/td\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003eCompression seal, push-fit installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: 0.05em; text-transform: uppercase;\"\u003eDimensions \u0026amp; Material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eDuct Connection Size\u003c\/td\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003e75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003e79mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"background: #F0F9F8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003eSynthetic rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #E0E0E0;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #FFFFFF; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #E0E0E0;\"\u003e-20°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat does this sealing ring do?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #2b2b2b; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eIt fits over the outside of a 75mm semi-rigid duct at a connection point and is compressed by the lock ring or connector to form an airtight joint.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat is it made from?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #2b2b2b; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eSynthetic rubber, rated for use between -20°C and +60°C.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDo I need tools to fit it?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #2b2b2b; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eNo — it is a simple push-fit component slipped over the duct end before the connector is fitted.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhy keep spares on site?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #2b2b2b; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eA worn, damaged, or displaced sealing ring can compromise the air-tightness of a duct joint. Having spares on hand lets an installer replace one quickly without delaying the job.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Casavent","offers":[{"title":"Default Title","offer_id":65622603235677,"sku":"SRD-SR-75","price":3.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SealingRingforSemi-RigidRadialDuct.png?v=1787129692","url":"https:\/\/qualityheating.co.uk\/products\/sealing-ring-for-75mm-semi-rigid-radial-duct","provider":"AIZO Quality Heating","version":"1.0","type":"link"}