bmotiontechTrue 1/2" NPT Female X KF25 flange stainless steel vacuum adapter FNPT Brand New itemTrue 1/2" NPT thread X KF25 flange vacuum adapterHex nut for easy tighteningby hand toolsMade of Stainless steel 304All NPT thread qualified by thread plug gaugeNo more PT/BSPT thread pretending NPTDon't try to mate BSPT and NPT threadtogetherNPT thread is a taper thread and self sealing when used with PTFE tape / glue Backgound info Adapter KF-25 to 1/2" NPT-Female, Flange Size ISO-KF NW-25, Stainless SteelThese adapters are KF-25 to 1/2 in. NPT female pipe thread. They are commonly used to make connections between ISO-KF and 1/2 inch NPT-Male pipe. The ISO-KF flanges 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.Adapter KF-25 to 1/2 inch. NPT-F Pipe, Stainless SteelFlange Size: ISO-KF NW-25Pipe Thread: 1/2 in. NPT-FemaleLength Dimensions: A = 1.57" (40 mm)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. "" ( ) "" ( ) "" ( ) "" ( ) "" ( ) 3.1210525804bmotiontech32177930112716-04-2017 09:46:3516-04-2017 09:46:35On Apr-16-17 at 01:50:27 PDT, seller added the following information: