{"product_id":"kerr-graphite-crucibles-30-troy-ounce-electro-melt","title":"Kerr-Ventura Graphite Crucibles For All 30 Troy Ounce Models","description":"\u003cp\u003eThese virgin graphite crucibles are manufactured exclusively for Otto Frei as a direct replacement for Kerr part numbers 29478 and 35620. Designed for use in all Kerr 30 troy ounce (approximately 1 kilo) Electro Melt models, they deliver long-lasting, economical performance that outlasts compressed graphite alternatives.\u003c\/p\u003e\u003cp\u003eUnlike the compressed graphite crucibles commonly found on the market, these crucibles are made from virgin graphite — a denser, higher-quality material that results in a heavier crucible with a bright, shiny, smooth surface when new. This construction provides maximum resistance to oxidation during the melt cycle, helping to protect your metal and extend service life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTo avoid cross-contamination, use a separate crucible for each metal type.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMade from virgin graphite — not compressed graphite — for greater density and durability\u003c\/li\u003e\n\u003cli\u003eHeavier construction with a smooth, shiny surface when new\u003c\/li\u003e\n\u003cli\u003eProvides maximum oxidation resistance during melting\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Kerr part numbers 29478 and 35620\u003c\/li\u003e\n\u003cli\u003eCompatible with all Kerr 30 troy ounce (1 kilo) Electro Melt models\u003c\/li\u003e\n\u003cli\u003eMade exclusively for Otto Frei\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e30 troy ounces (approximately 1 kilo) gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Height\u003c\/th\u003e\n\u003ctd\u003e5 in (127 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Width (widest point)\u003c\/th\u003e\n\u003ctd\u003e2–1\/4 in (57 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Width (below lip)\u003c\/th\u003e\n\u003ctd\u003e1–5\/8 in (41 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight to Top of Lip\u003c\/th\u003e\n\u003ctd\u003e4–1\/8 in (104 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInside Diameter\u003c\/th\u003e\n\u003ctd\u003e1–3\/8 in (35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInside Depth\u003c\/th\u003e\n\u003ctd\u003e4–3\/16 in (110 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eVirgin graphite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplaces Kerr Part #\u003c\/th\u003e\n\u003ctd\u003e29478, 35620\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eCompatible with all Kerr 30 troy ounce Electro Melt models, including the current model 35222 and the following former production models:\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKerr Series 1258 (former production)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eKerr 31806 – 120V\u003c\/li\u003e\n\u003cli\u003eKerr 31807 – 230V\u003c\/li\u003e\n\u003cli\u003eKerr 31808 – 120V\u003c\/li\u003e\n\u003cli\u003eKerr 31809 – 230V\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKerr Series 364 (former production)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eKerr 13993 – 115V\u003c\/li\u003e\n\u003cli\u003eKerr 13994 – 230V\u003c\/li\u003e\n\u003cli\u003eKerr 22359 – 115V\u003c\/li\u003e\n\u003cli\u003eKerr 22373 – 230V\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAll metric measurements are conversions and are ±1%.\u003c\/li\u003e\n\u003cli\u003eDimensions listed reflect a brand new crucible. Dimensions will change with use as the graphite wears with repeated exposure to heat and air.\u003c\/li\u003e\n\u003cli\u003eUse a dedicated crucible per metal type to prevent contamination.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kerr","offers":[{"title":"Default Title","offer_id":43579597324502,"sku":"122.340","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/122.340NEW_thumb_c23812bf-813d-491c-b943-1cdb86a1ae7b.jpg?v=1779837825","url":"https:\/\/www.ottofrei.com\/products\/kerr-graphite-crucibles-30-troy-ounce-electro-melt","provider":"Otto Frei","version":"1.0","type":"link"}