bmotiontechElbow 90 Degrees Elbow 90 Degrees KF-16 Vacuum Fittings, ISO-KF Flange Size NW-16, Stainless SteelThese KF-16 90 degree elbow vacuum fittings follow ISO-KF standards and have a flange size of NW-16.They are commonly used to build foreline vacuum plumbing and process systems.They are often called quick flange fittings because they are quick to assemble.A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge).The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.KF-16 Elbow 90 DegreesISO-KF Flange Size: NW-16Common Dimensions: A = 1.6" (40mm)We only accept PayPal on eCRATER, this means you can rest assured your order will be with you ASAP after your purchase. For your security we only despatch your order to the address you provide us via PayPal.As soon as you pay, eCRATER & PayPal will email you to let you know it's been received and as soon as we've shipped your order, we'll let you know by email that it has been despatched and the tracking number if applicable. "We want you to be 100% happy with your purchase and offer a 14 day "no quibble" guarantee"If you change your mind, or the purchase is not suitable, you may notify us to cancel the contract within 14 days after the day of receipt of item(s) and you have a duty to take reasonable care of the item(s) until we receive the item(s) back. Return posting costs will be at your expense.Any Questions?Please check this listing page carefully as the answer is usually there. If not, let us know and we'll try our hardest to reply within one working day. "" ( ) "" ( ) "" ( ) "" ( ) "" ( ) 3.1210525804bmotiontech22182177723430-04-2017 15:22:4430-04-2017 15:22:44On Apr-30-17 at 07:26:07 PDT, seller added the following information: