api 11b single layer stuffing box

{"cid":"91191664","title":"Steel Double \/ Single Layer Stuffing Box For API 11B Polished Rod Seal","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/20\/cf\/b0937aa8b8e0d05b9d1fbdcabb73-200x200-1.jpg","attrs":{"Brand Name":"ZS","Model Number":"1\", 1-1\/8\", 1-1\/4\", 1-1\/2\", and 1-3\/4\"","Certification":"API 11B","Place of Origin":"China,Henan","Application":"Oilfield Cementing","Brand":"OEM","Connection Type":"Threaded, Flanged","MOQ":"1 Piece","Material":"Steel, Alloy Steel, Stainless Steel","Packaging":"Wooden Box, Carton, Pallet","Pressure Rating":"High Pressure","Product Name":"Oilfield Cementing Tools","Size":"Customized","Standard":"API, ANSI, DIN, JIS","Surface Treatment":"Polishing, Sand Blasting, Painting","Temperature Rating":"High Temperature"}}

{"cid":"91186823","title":"Casting Oilfield API 11B Polished Hot Rolled Sucker Rod","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/05\/73\/a029d8318e3cbac39336310843d0-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"TR Solids Control","Model Number":"TRCYG","Minimum Order Quantity":"1 pc","Delivery Time":"Within 15 days after deposit","Certification":"API 11 B Certificate, ISO Certificate","Place of Origin":"Xi'an China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union","Supply Ability":"100000 pcs per month","Packaging Details":"Pallet or wooden case","Length":"7518mm, 9042mm","Material":"Carbon Steel","Use":"Well Drilling, Energy & Mining","Processing Type":"Forging\/Casting","Size":"5\/8\"to 1-1\/8\"","Steel Grade":"C,D,K"}}

{"cid":"91193353","title":"Anti Corrosive Oil Well Blowout Preventer 7 1\/16\"X3 1\/8\"X3000psi Studded Flange","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/77\/9e\/9efd06f7570517178f90451b6cb3-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"JC Wellhead","Model Number":"Polish Rod rod BOP","Minimum Order Quantity":"1 set","Delivery Time":"30-45 days","Certification":"API 6A","Place of Origin":"China","Payment Terms":"T\/T, L\/C, D\/P","Supply Ability":"10 sets \/ month","Packaging Details":"Polywood case for land, air, ocean shipment","Application":"Oil well drilling operation","Usage":"Oil well pressure control equipment","Material":"Alloy Steel Forging","Production Level":"PLS 2","Temperature Class":"T","Standard":"API 16A","Product name":"Polish rod BOP","Specification":"1 1\/4\"-3000psi"}}