Specification Brand : Generic BulletPoint1 : Dimensions: A= 0.50 inch, B= 0.21 inch, Mesh Pore Size=210 microns BulletPoint2 : The centering ring with a screen is used to filter the vacuum flow and keep objects from being sucked into your vacuum pump or Helium detector. BulletPoint3 : This O-ring is round in cross-section, and is designed for use in a wide variety of sealing applications. Rubber elastomer o-ring made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons. BulletPoint4 : These centering rings with screen mesh are useful in many situations in which a vacuum system or instrument needs to be protected from contamination by particulate generated from outside the system or from within. BulletPoint5 : Round in cross-section to provide a seal between cylindrical overlapping surfaces.A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring. Color : Black ConnectorType : Weld ExternallyAssignedProductIdentifier1 : 0644650671908 ExternallyAssignedProductIdentifier2 : 644650671908 ItemName : AF FBWO-06 - #6 Female O-Ring Boss (9/16''-18 Threads) Weld On ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 2 inches ItemPackageDimensions_Width : 2 inches ItemPackageQuantity : 30 ItemTypeKeyword : o-ring-seals Manufacturer : Generic Material : Rubber ModelNumber : X1E-CON-ORI-RUB-0019x30 NumberOfItems : 1 PackageLevel : unit PartNumber : AF FBWO-06 ProductDescription : #6 Female O-Ring Boss (9/16''-18 Threads) Weld On Port 1'' Outside Diameter 11/16'' Tall Steel ProductSiteLaunchDate : 2016-03-11T19:20:10.840Z Size : 240 SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 40141700