{"product_id":"diffuser-o-ring","title":"Pentair Diffuser O-Ring for Dynamo","description":"\u003cp\u003eThe Pentair 354634 is the diffuser bracket O-ring for the Dynamo aboveground swimming pool pump. It is also carried under the reference O-453, and it is listed at 3\/16 in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diffuser sits over the impeller and directs water into the volute. The O-ring around its bracket keeps that path sealed. When the O-ring hardens, flattens or cracks, water short circuits inside the pump and air finds its way in with it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptoms\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA Dynamo that primes slowly, loses prime after it shuts off, or runs with air riding in the strainer pot is often pointing at a seal this small. It is worth checking before you go looking for a cracked housing or a suction line leak.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDo not reuse an old O-ring once the pump is open. The mechanical seal assembly and the strainer pot lid O-ring are the parts most often changed in the same service, and all three are inexpensive next to a second teardown.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627712295124,"sku":"PAC-101-3081","price":6.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_356cb510-9d6b-46e3-adbe-5125303354bd.jpg?v=1788727017","url":"https:\/\/www.activepoolsupply.com\/products\/diffuser-o-ring","provider":"Active Pool Supply","version":"1.0","type":"link"}