ISO Flanges and Fittings

ISO Flanges

ISO Clamps and Fasteners

ISO Hardware and Seals

ISO Nipples

ISO Bellows and Flexible Hose

ISO-K 90° radius vacuum elbow

ISO Elbows

ISO Tees

ISO Crosses

Frequently Asked Questions: ISO Flanges and Fittings

Which ISO flange style should I order, ISO-K or ISO-F?

ISO-K (ISO-LF) flanges are held together with claw clamps or a bolt ring, so they pair with the parts in ISO Clamps & Fasteners. ISO-F (ISO-LFB) flanges are bolted through the flange, which suits a connection that stays assembled. Both use the same tube sizes, centering rings and O-rings.

Which ISO sizes does ANCORP offer?

ANCORP offers ISO 63, 80, 100, 160, 200, 250, 320, 400 and 500 in both ISO-K and ISO-F styles. The ISO Flanges & Fittings catalog (PDF) lists dimensions for each size.

Are ANCORP ISO flanges made to a standard?

Yes. ANCORP ISO flanges and fittings are made to ISO 2861 tolerances in 304L stainless steel with options available by request for 6061-T6 aluminum.

How do I request a quote for ISO flanges and fittings?

Send the part numbers, sizes and quantities through our quote request form, or contact our team through our live chat with questions about your application.