{"product_id":"12-x-135mm-sight-glass","title":"12 x 135mm Sight Glass","description":"\u003cp\u003e\u003cstrong\u003e12 x 135mm Boiler Sight Glass\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReplacement sight glass, 12 x 135mm, for La Cimbali M15, M20, M25, M27, and M30; Faema Star Tronic; and Nuova Simonelli Optima boilers. Also cross-referenced under the older part number C_477.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits: La Cimbali M15, M20, M25, M27, M30; Faema Star Tronic; Nuova Simonelli Optima\u003c\/li\u003e\n\u003cli\u003eReplaces: C_477 (older part number)\u003c\/li\u003e\n\u003cli\u003eWorks with: on Nuova Simonelli Optima installs, pair with gasket \u003ca href=\"https:\/\/www.espressoparts.mom\/S_48\" target=\"_blank\"\u003eS_48\u003c\/a\u003e — this model requires it alongside the sight glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHandle the glass carefully to avoid chipping the ends, and don't over-tighten the retaining nuts once installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eOn the Optima specifically, skipping the S_48 gasket is a common installation mistake that leads to a weeping sight glass almost immediately — order both together for that model.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37553750147259,"sku":"F_436","price":3.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/f_436_79e696e3-39ae-4021-9f1a-01bbdbc370db.jpg?v=1610087469","url":"https:\/\/www.espressoparts.mom\/products\/12-x-135mm-sight-glass","provider":"Espresso Parts","version":"1.0","type":"link"}