{"product_id":"alumina-ceramic-disc-round-crucible-cover-o8-68-mm-1-15-mm-thick-99-or-95-al-o-up-to-1750-c","title":"Alumina Ceramic Disc \/ Round Crucible Cover, Ø8–68 mm, 1–15 mm Thick, 99% or 95% Al₂O₃, up to 1750 °C","description":"\u003ch2\u003eAlumina Ceramic Disc \/ Round Crucible Cover\u003c\/h2\u003e\u003cp\u003eRound alumina ceramic discs used as crucible and beaker covers, setter discs or gasket plates for high-temperature laboratory work. Most sizes are made of 99% alumina; four sizes are also offered in 95% alumina. 37 sizes from Ø8 mm to Ø68 mm.\u003c\/p\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor high-temperature use:\u003c\/strong\u003e 99% alumina discs withstand up to 1750 °C for demanding laboratory and industrial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMany sizes:\u003c\/strong\u003e diameters from 8 to 68 mm and thicknesses from 1 to 15 mm to fit a wide range of crucibles and beakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-purity ceramic:\u003c\/strong\u003e minimal contamination and excellent thermal stability for precise work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCover function:\u003c\/strong\u003e sits securely on crucibles and beakers to prevent spillage and protect samples during heating or storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold individually:\u003c\/strong\u003e 1 piece per pack.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-purity, dense, uniform alumina without pores, cracks or color differences\u003c\/li\u003e\n\u003cli\u003eStable corundum structure, long-term use above 1600 °C; low thermal expansion, resists cracking and deformation under rapid heating and cooling\u003c\/li\u003e\n\u003cli\u003eMohs 9 hardness: excellent wear, erosion and impact resistance; service life over 3× that of ordinary ceramic sheets\u003c\/li\u003e\n\u003cli\u003eExcellent high-temperature electrical insulation; suitable for humid, corrosive and high-pressure environments\u003c\/li\u003e\n\u003cli\u003ePressed, high-temperature sintered and precision polished: uniform roundness and thickness, high flatness, burr-free edges\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"font-size:1.2rem\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDiameter (mm)\u003c\/th\u003e\n\u003cth\u003eThickness (mm)\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e95% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e62.5\u003c\/td\u003e\n\u003ctd\u003e5.5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e66\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e66\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e66\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e68\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e99% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e95% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e95% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e95% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e95% Al₂O₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eFor research and laboratory use only.\u003c\/em\u003e\u003c\/p\u003e","brand":"Alabsupply","offers":[{"title":"Ø25 × 3 mm","offer_id":68292054810844,"sku":"PUR-ADSC-25X3","price":3.0,"currency_code":"USD","in_stock":true},{"title":"Ø30 × 3 mm","offer_id":68292054843612,"sku":"PUR-ADSC-30X3","price":3.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 5 mm","offer_id":68292054876380,"sku":"PUR-ADSC-35X5","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 13 mm","offer_id":68292054909148,"sku":"PUR-ADSC-35X13","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Ø30 × 2.5 mm","offer_id":68292054941916,"sku":"PUR-ADSC-30X2P5","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø40 × 4 mm","offer_id":68292054974684,"sku":"PUR-ADSC-40X4","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 1 mm","offer_id":68292055007452,"sku":"PUR-ADSC-50X1","price":10.0,"currency_code":"USD","in_stock":true},{"title":"Ø20 × 2 mm (95% Alumina)","offer_id":68292055040220,"sku":"PUR-ADSC-20X2-95","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø8 × 6 mm","offer_id":68292055072988,"sku":"PUR-ADSC-8X6","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø10 × 2 mm","offer_id":68292055105756,"sku":"PUR-ADSC-10X2","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø10 × 8 mm","offer_id":68292055138524,"sku":"PUR-ADSC-10X8","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø10 × 10 mm","offer_id":68292055171292,"sku":"PUR-ADSC-10X10","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø18 × 15 mm","offer_id":68292055204060,"sku":"PUR-ADSC-18X15","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø20 × 2.5 mm","offer_id":68292055236828,"sku":"PUR-ADSC-20X2P5","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø20 × 3 mm","offer_id":68292055269596,"sku":"PUR-ADSC-20X3","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 2 mm","offer_id":68292055302364,"sku":"PUR-ADSC-35X2","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 2.5 mm","offer_id":68292055335132,"sku":"PUR-ADSC-35X2P5","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø35 × 3 mm","offer_id":68292055367900,"sku":"PUR-ADSC-35X3","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø40 × 2.5 mm","offer_id":68292055400668,"sku":"PUR-ADSC-40X2P5","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø45 × 3 mm","offer_id":68292055433436,"sku":"PUR-ADSC-45X3","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø45 × 4 mm","offer_id":68292055466204,"sku":"PUR-ADSC-45X4","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 3.5 mm","offer_id":68292055498972,"sku":"PUR-ADSC-50X3P5","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 4 mm","offer_id":68292055531740,"sku":"PUR-ADSC-50X4","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø50 × 4.5 mm","offer_id":68292055564508,"sku":"PUR-ADSC-50X4P5","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø60 × 4 mm","offer_id":68292055597276,"sku":"PUR-ADSC-60X4","price":6.0,"currency_code":"USD","in_stock":true},{"title":"Ø60 × 5 mm","offer_id":68292055630044,"sku":"PUR-ADSC-60X5","price":7.0,"currency_code":"USD","in_stock":true},{"title":"Ø60 × 7 mm","offer_id":68292055662812,"sku":"PUR-ADSC-60X7","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Ø60 × 10 mm","offer_id":68292055695580,"sku":"PUR-ADSC-60X10","price":10.0,"currency_code":"USD","in_stock":true},{"title":"Ø62.5 × 5.5 mm","offer_id":68292055728348,"sku":"PUR-ADSC-62P5X5P5","price":7.0,"currency_code":"USD","in_stock":true},{"title":"Ø66 × 4 mm","offer_id":68292055761116,"sku":"PUR-ADSC-66X4","price":7.0,"currency_code":"USD","in_stock":true},{"title":"Ø66 × 5 mm","offer_id":68292055793884,"sku":"PUR-ADSC-66X5","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Ø66 × 7 mm","offer_id":68292055826652,"sku":"PUR-ADSC-66X7","price":10.0,"currency_code":"USD","in_stock":true},{"title":"Ø68 × 14 mm","offer_id":68292055859420,"sku":"PUR-ADSC-68X14","price":24.0,"currency_code":"USD","in_stock":true},{"title":"Ø36 × 4 mm (95% Alumina)","offer_id":68292055892188,"sku":"PUR-ADSC-36X4-95","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Ø40 × 3 mm (95% Alumina)","offer_id":68292055924956,"sku":"PUR-ADSC-40X3-95","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Ø45 × 4 mm (95% Alumina)","offer_id":68292055957724,"sku":"PUR-ADSC-45X4-95","price":6.0,"currency_code":"USD","in_stock":true},{"title":"Ø60 × 10 mm (95% Alumina)","offer_id":68292055990492,"sku":"PUR-ADSC-60X10-95","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/3474\/1724\/files\/alumina-ceramic-disc-round-crucible-cover-o8-68-mm-1-15-mm-thick-99-or-95-al-o-up-to-1750-c_img_00.jpg?v=1794762772","url":"https:\/\/alabsupply.com\/products\/alumina-ceramic-disc-round-crucible-cover-o8-68-mm-1-15-mm-thick-99-or-95-al-o-up-to-1750-c","provider":"Alabsupply","version":"1.0","type":"link"}