{"product_id":"lower-group-head-mushroom-o-ring","title":"Lower Group Head Mushroom O-ring","description":"\u003cp\u003e\u003cstrong\u003eLower Group Head Mushroom O-Ring, EPDM 04075\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis EPDM o-ring seals the lower mushroom valve inside the group head, the disc that opens to let hot water reach the puck on every shot. It's a wear item, EPDM handles the heat cycling well, but the ring still hardens and loses its seal over years of daily brewing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eO-ring 04075, EPDM, 3.53 mm thick, 18.64 mm ID\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eFits: Group heads using the lower mushroom valve with a 04075-size o-ring\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTechnician-level job, the group head has to be partially disassembled to access the lower mushroom, so this isn't a five-minute counter repair.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eA failing lower mushroom o-ring shows up as water dripping from the group between shots, not during brewing, if you're chasing a group head drip and the gasket and screen are fine, this o-ring is the next suspect.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37553626939579,"sku":"F_206","price":1.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/f_206_10c8fe0d-e541-41f0-8ab9-05e00c3d709d.png?v=1610086867","url":"https:\/\/www.espressoparts.mom\/products\/lower-group-head-mushroom-o-ring","provider":"Espresso Parts","version":"1.0","type":"link"}