{"product_id":"dn64cf-sapphire-al2o3-viewport-1","title":"Sapphire (Al2O3) viewports","description":"\u003cp\u003eVacuum-brazed (lead (Pb) free) zero length sapphire viewports in 304L or 316LN stainless steel gasket-sealed UHV flanges.\u003c\/p\u003e\n\u003cp\u003eBakeable to 200 degrees C (do not exceed 3 degree C per minute ramp rate).\u003c\/p\u003e\n\u003cp\u003eAnnealed copper gaskets should be used to seal CF viewports; these are available from 4VISA, along with nut\/bolt\/washer kits.\u003c\/p\u003e","brand":"4VISA","offers":[{"title":"DN16CF (15mm view diameter) 304L flange","offer_id":55435117887813,"sku":"1","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"DN40CF (32mm view diameter) 304L flange","offer_id":55435117920581,"sku":"1","price":297.6,"currency_code":"GBP","in_stock":true},{"title":"DN63CF (63mm view diameter) 304L flange","offer_id":55435117986117,"sku":"1","price":644.4,"currency_code":"GBP","in_stock":true},{"title":"DN16CF (15mm view diameter) 316LN flange","offer_id":57848845730117,"sku":null,"price":349.2,"currency_code":"GBP","in_stock":true},{"title":"DN63CF (63mm view diameter) 316LN flange","offer_id":57848874631493,"sku":null,"price":722.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/3492\/8709\/files\/CF-Viewport.jpg?v=1752853630","url":"https:\/\/www.4visa.co.uk\/products\/dn64cf-sapphire-al2o3-viewport-1","provider":"4VISA","version":"1.0","type":"link"}