bmotiontechKF25 flange vacuum bellow hose 500mm 19.6" with 2 sets clamper & O-ring Combo 3 This Combo 3 package included following1. 1pcs 500mm 19" KF25 flange vacuum bellow2. 2 sets of Aluminum clamp ring & centering ring with O-ringIf you just need bellow hose only, please click the link bellowKF25 flange vacuum bellow, made of SS304Vacuum Bellow Specification1. Both size KF25 Flange /ISO-KF Flange Size: KF25, NW-252.End to endLength500mm (19 ")3. Made of Stainless Steel 3044. Wall thickness= 0.2mmand this makes the bellow bendable and twistable4. Finely polished Flange for high vacuum application5. Delicate welding to ensure integrity and reliability6. Plastic flange protective cap is included to avoid flange scratching during transportationClamp ring & Centering ring Specification1. For KF25 flange /ISO-KF Flange Size: KF25, NW-252.Made of Aluminum3.O-ring material (Buna-N)Background info of ISO-KF flangeKF flange is 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 size larger it becomes ISO-LF63, ISO-LF80, ISO-LF100, ISO-LF160We 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. "" ( ) "" ( ) "" ( ) "" ( ) "" ( ) 3.1210525804bmotiontech22182177028116-04-2017 16:35:5016-04-2017 16:35:50On Apr-16-17 at 08:38:14 PDT, seller added the following information: