{"product_id":"universal-rubber-sprue-base-casting-flasks","title":"Sprue Base \"Universal\" For 2-1\/2\",  3\", \u0026 3-1\/2\" Diameter Flasks","description":"\u003cp\u003eThe Universal Rubber Sprue Base is a practical, versatile solution for investment casting setups. Designed to fit multiple flask sizes, this single sprue base accommodates 2-1\/2\", 3\", and 3-1\/2\" diameter flasks — eliminating the need to stock separate bases for each flask size you use.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOne sprue base fits three common flask diameters: 2-1\/2\", 3\", and 3-1\/2\"\u003c\/li\u003e\n  \u003cli\u003eUniversal fit reduces the need for multiple size-specific bases\u003c\/li\u003e\n  \u003cli\u003eRubber construction for a secure, flexible seal against the flask\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard casting flask setups used in jewelry production\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eCompatible Flask Diameters\u003c\/th\u003e\n\u003ctd\u003e2-1\/2\", 3\", 3-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e1 sprue base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43579568128214,"sku":"121.780","price":5.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/sprue-base-universal-for-2-12-3-and-3-12-diameter-flasks-otto-frei.jpg?v=1719958592","url":"https:\/\/www.ottofrei.com\/products\/universal-rubber-sprue-base-casting-flasks","provider":"Otto Frei","version":"1.0","type":"link"}