low helium leak rate metallized alumina ceramics

{"cid":"91200183","title":"Custom Metalized Ceramic Tubes with High Tensile Strength > 20,000 psi and Low Helium Leak Rate < 10-9 cc\/sec","imgUrl":"https:\/\/img.chinax.com\/nimg\/80\/50\/6e253d8d2011af1457612772a595-200x200-1.jpg","attrs":{"Price":"10USD\/PC","Brand Name":"ZG","Model Number":"MS","Minimum Order Quantity":"1 PC","Delivery Time":"5-8 WORKING DAYS","Certification":"CE","Place of Origin":"China","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Supply Ability":"1000PCS","Packaging Details":"Strong wooden box for Global shipping"}}

{"cid":"91201329","title":"550Mpa Alumina Ceramic Components Ceramic To Metal Brazing Assemblies ISO14001","imgUrl":"https:\/\/img.chinax.com\/nimg\/eb\/6f\/0d1a25e55c4f1b3ef64480a47d6c-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Antaeus","Model Number":"AD-A036","Minimum Order Quantity":"Negotiation","Delivery Time":"15-45 days","Certification":"\/","Place of Origin":"Hunan,China","Payment Terms":"T\/T or Negotiation","Supply Ability":"Full Supply","Packaging Details":"Inner vacuum packaging, outside carton.","Chemical ingredients":"Al2O3","Max. Use Temp.":"1650\u2103","Bulk Density":"3.6g\/cm3-3.9g\/cm3","Water absorption":"0%","ROHS Hardness":"\u226585","Flexural strength":"358(52) - 550 Mpa(psix10^3)","Compressive Strength":"2068(300) - 2600(377) Mpa(psix10^3)","Coefficient of thermal expansion":"7.6 - 8.2 \/ 1X10^-6\/\u2103","Coefficient of thermal conductivity":"16-30.4 \/ W\/m.K","Thermal Shock Resistance":"250\u2103","Dielectricity constant":"9-9.7 \/ 1MHz.25\u2103","Dielectric strength":"8.3(210) - 8.7(220) \/ ac-kV\/mm(ac V\/mil)","Volume Resistivity":">10^13 ohm-cm"}}

{"cid":"91213837","title":"Ceramic-To-Metal Custom Vacuum Brazing Services For Aluminum Oxide, Beryllium Oxide, Aluminum Nitride","imgUrl":"https:\/\/img.chinax.com\/nimg\/21\/5d\/1d663d7b5176ff23075ce21eef1c-200x200-1.jpg","attrs":{"Brand Name":"Cersol","Place of Origin":"China","Payment Terms":"T\/T IN ADVANCE","Packaging Details":"BAGS, BARRELS, CARTONS","Customized":"yes","Material":"ceramic and metal","Feature":"high thermal conductivity, good thermal shock behaviour"}}