{"id":1427,"date":"2025-06-17T04:59:08","date_gmt":"2025-06-17T04:59:08","guid":{"rendered":"https:\/\/tqwater.co.za\/?product=979simpletqrs-wi-sftuv-o-rings"},"modified":"2026-05-20T07:49:07","modified_gmt":"2026-05-20T07:49:07","slug":"979simpletqrs-wi-sftuv-o-rings","status":"publish","type":"product","link":"https:\/\/tqwater.co.za\/?product=979simpletqrs-wi-sftuv-o-rings","title":{"rendered":"UV O-rings"},"content":{"rendered":"

UV SYSTEMS & THEIR TYPICAL O-RING \/ SLEEVE SIZES<\/strong><\/h1>\n

(South African common stock, SDE-series + standard domestic UV)<\/em><\/p>\n

\u2b50 SMALL DOMESTIC UV \u2013 10W to 21W<\/strong><\/h2>\n
\n
\n\n\n\n\n\n\n\n\n
Model<\/th>\nFlow Rate<\/th>\nQuartz Sleeve \u00d8<\/th>\nO-Ring Size<\/th>\n<\/tr>\n<\/thead>\n
10W (226 LPH)<\/strong><\/td>\n0.23 m\u00b3\/hr<\/td>\n22\u201323 mm<\/strong><\/td>\nSmall O-ring<\/td>\n<\/tr>\n
14W (453 LPH)<\/strong><\/td>\n0.45 m\u00b3\/hr<\/td>\n22\u201323 mm<\/strong><\/td>\nSmall O-ring<\/td>\n<\/tr>\n
15W SDE-015 (680 LPH)<\/strong><\/td>\n0.68 m\u00b3\/hr<\/td>\n22\u201323 mm<\/strong><\/td>\nSmall O-ring<\/td>\n<\/tr>\n
21W SDE-021 (1360 LPH)<\/strong><\/td>\n1.3 m\u00b3\/hr<\/td>\n23\u201328 mm<\/strong><\/td>\nMedium O-ring<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

\u2b50 MEDIUM UV \u2013 29W to 65W<\/strong><\/h2>\n
\n
\n\n\n\n\n\n\n\n
Model<\/th>\nFlow Rate<\/th>\nQuartz Sleeve \u00d8<\/th>\nO-Ring Size<\/th>\n<\/tr>\n<\/thead>\n
29W SDE-029 (1814 LPH)<\/strong><\/td>\n1.8 m\u00b3\/hr<\/td>\n28 mm<\/strong><\/td>\nMedium O-ring<\/td>\n<\/tr>\n
40W SDE-040 (2721 LPH)<\/strong><\/td>\n2.7 m\u00b3\/hr<\/td>\n28\u201330 mm<\/strong><\/td>\nMedium-large<\/td>\n<\/tr>\n
65W SDE-065 (3024 LPH)<\/strong><\/td>\n3.0 m\u00b3\/hr<\/td>\n30\u201332 mm<\/strong><\/td>\nLarge O-ring<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

\u2b50 LARGE COMMERCIAL UV \u2013 85W to 120W<\/strong><\/h2>\n

These units normally use a big thick rubber O-ring<\/strong> for a 35 mm sleeve<\/strong>.<\/p>\n

\n
\n\n\n\n\n\n\n\n
Model<\/th>\nFlow Rate<\/th>\nQuartz Sleeve \u00d8<\/th>\nO-Ring Size<\/th>\n<\/tr>\n<\/thead>\n
85W (5443 LPH)<\/strong><\/td>\n5.4 m\u00b3\/hr<\/td>\n30\u201335 mm<\/strong><\/td>\nLarge O-ring<\/td>\n<\/tr>\n
105W (7938 LPH)<\/strong><\/td>\n7.9 m\u00b3\/hr<\/td>\n30\u201335 mm<\/strong><\/td>\nLarge O-ring<\/td>\n<\/tr>\n
120W (10,200 LPH)<\/strong><\/td>\n10.2 m\u00b3\/hr<\/td>\n35 mm<\/strong><\/td>\nExtra-large<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

\u2b50 INDUSTRIAL UV \u2013 2\u00d7155W \/ 3\u00d7155W \/ 4\u00d7155W<\/strong><\/h2>\n

These big UV chambers use flanged ends<\/strong> and a thick industrial O-ring<\/strong>, not the small domestic type.<\/p>\n

\n
\n\n\n\n\n\n\n\n
Model<\/th>\nFlow Rate<\/th>\nTotal Watt<\/th>\nSleeve Type<\/th>\nO-Ring<\/th>\n<\/tr>\n<\/thead>\n
(2)\u00d7155W \u2013 20 m\u00b3\/hr (310W)<\/strong><\/td>\n20,000 LPH<\/td>\n310W<\/td>\nLarge 4″ flange<\/strong><\/td>\nIndustrial flange O-ring<\/td>\n<\/tr>\n
(3)\u00d7155W \u2013 30 m\u00b3\/hr (465W)<\/strong><\/td>\n30,000 LPH<\/td>\n465W<\/td>\nLarge 2″ \/ 4″ flange (depends on manufacturer)<\/strong><\/td>\nIndustrial flange O-ring<\/td>\n<\/tr>\n
(4)\u00d7155W \u2013 50 m\u00b3\/hr (620W)<\/strong><\/td>\n50,000 LPH<\/td>\n620W<\/td>\nLarge 4″ flange<\/strong><\/td>\nIndustrial flange O-ring<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\u27a1\ufe0f These units DO NOT use the small round domestic O-rings.<\/strong>
They use big flat industrial O-rings<\/strong> designed for high-pressure stainless chambers.<\/p>\n

\n

\ud83d\udd25 QUICK SUMMARY \u2014 O-RING GROUPS<\/strong><\/h1>\n

Group 1 \u2014 Small Domestic O-ring<\/strong><\/h3>\n
    \n
  • \n

    10W, 14W, 15W, 21W<\/p>\n<\/li>\n

  • \n

    Sleeve: 22\u201323 mm<\/p>\n<\/li>\n

  • \n

    O-ring: SMALL<\/p>\n<\/li>\n<\/ul>\n

    Group 2 \u2014 Medium Domestic O-ring<\/strong><\/h3>\n
      \n
    • \n

      29W, 40W<\/p>\n<\/li>\n

    • \n

      Sleeve: 28\u201330 mm<\/p>\n<\/li>\n

    • \n

      O-ring: MEDIUM<\/p>\n<\/li>\n<\/ul>\n

      Group 3 \u2014 Large Domestic O-ring<\/strong><\/h3>\n
        \n
      • \n

        65W, 85W, 105W, 120W<\/p>\n<\/li>\n

      • \n

        Sleeve: 30\u201335 mm<\/p>\n<\/li>\n

      • \n

        O-ring: LARGE<\/p>\n<\/li>\n<\/ul>\n

        Group 4 \u2014 Industrial O-ring<\/strong><\/h3>\n
          \n
        • \n

          All 155W multi-lamp systems<\/p>\n<\/li>\n

        • \n

          Sleeve: Big flanged system (4″ or 2″)<\/p>\n<\/li>\n

        • \n

          O-ring: INDUSTRIAL FLANGE RING<\/p>\n<\/li>\n<\/ul>\n

          UV Unit Maintenance Tips: O-Rings, Leaks, and Pressure Management<\/strong><\/h2>\n

          Proper maintenance of your UV water sterilizer not only extends its lifespan but also ensures safe, leak-free operation. Below are key tips regarding O-rings<\/strong>, seal lubrication<\/strong>, and pressure management<\/strong>:<\/p>\n

          \n

          \ud83d\udfe2 O-Ring & Seal Maintenance<\/strong><\/h3>\n
            \n
          • \n

            Replace the O-ring<\/strong> each time you open the UV unit, especially during lamp or quartz sleeve replacement.<\/p>\n<\/li>\n

          • \n

            Although standard O-rings<\/strong> can last for years under normal conditions, they may become brittle<\/strong> over time.<\/p>\n<\/li>\n

          • \n

            Old or dry O-rings<\/strong> are prone to cracking or leaking, especially when reassembled.<\/p>\n<\/li>\n<\/ul>\n

            \n

            \u26a0\ufe0f Avoid Over-Tightening<\/strong><\/h3>\n
              \n
            • \n

              Over-tightening fittings can:<\/p>\n

                \n
              • \n

                Deform or flatten<\/strong> the O-ring<\/p>\n<\/li>\n

              • \n

                Cause buckling at the seal point<\/strong><\/p>\n<\/li>\n

              • \n

                Result in leaks even when everything appears tight<\/p>\n<\/li>\n<\/ul>\n<\/li>\n

              • \n

                Tightening onto a dry seal<\/strong> increases friction and may cause:<\/p>\n

                  \n
                • \n

                  Stretching, pinching, or tearing<\/strong> of the rubber<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                  \n

                  \ud83e\uddf4 Lubrication Tip: Use Crisco, Not Vaseline<\/strong><\/h3>\n
                    \n
                  • \n

                    Apply a light layer of Crisco (vegetable grease)<\/strong> to lubricate the O-ring:<\/p>\n

                      \n
                    • \n

                      Prevents pinching or stretching during assembly<\/p>\n<\/li>\n

                    • \n

                      Ensures a smooth, uniform seal<\/p>\n<\/li>\n

                    • \n

                      Safe for aquatic environments<\/strong> (non-toxic to fish and pond life)<\/p>\n<\/li>\n

                    • \n

                      Does not degrade rubber<\/strong> like Vaseline or petroleum-based lubricants can<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                      UV SYSTEMS & THEIR TYPICAL O-RING \/ SLEEVE SIZES (South African common stock, SDE-series + standard domestic UV) \u2b50 SMALL DOMESTIC UV \u2013 10W to 21W Model Flow Rate Quartz Sleeve \u00d8 O-Ring Size 10W (226 LPH) 0.23 m\u00b3\/hr 22\u201323 mm Small O-ring 14W (453 LPH) 0.45 m\u00b3\/hr 22\u201323 mm Small O-ring 15W SDE-015 (680 […]<\/p>\n","protected":false},"featured_media":1484,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[334,449],"product_tag":[],"class_list":["post-1427","product","type-product","status-publish","has-post-thumbnail","product_cat-uv-disinfection-systems","product_cat-uv-o-rings","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/tqwater.co.za\/index.php?rest_route=\/wp\/v2\/product\/1427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tqwater.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/tqwater.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/tqwater.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1427"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tqwater.co.za\/index.php?rest_route=\/wp\/v2\/media\/1484"}],"wp:attachment":[{"href":"https:\/\/tqwater.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1427"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/tqwater.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=1427"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/tqwater.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=1427"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/tqwater.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=1427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}