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Stainless Steel ISO-K Weld Flanges (Metric Tube) Stainless Steel ISO-K Weld Flanges (Metric Tube) 1

Stainless Steel ISO-K Weld Flanges (Metric Tube)

The ISO flange (also called Large ISO) is used for HV chamber ports and is available in two distinct styles; ISO-K which uses clamp fasteners and ISO-F which uses nut and bolt fasteners. A variety of bolt/clamp options permit joints between mixed ISO-K and -F flanges.

The design principles of ISO and KF seals are identical. Each flange face is counter-bored or grooved to receive a metal centering ring with an elastomeric o-ring around its O.D. As with KF, the ISO centering ring both aligns the flanges and holds the o-ring in place.

ISO flanges are limited (by the o-ring's properties) to applications with temperatures between ~0° C and 120–180° C, and pressure from atmosphere to ~10-8 torr or mbar.

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Notes:
  • These flanges are identical to the ISO NW flange standard. While these flanges are compatible with those made by European manufacturers, the tube diameter listed is in inches.
  • Our ISO-K Flanges are compatible to the ISO Standard 1609 Specification.

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Ordering Table

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Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at +1 412 387 9200 or email international@lesker.com with your inquiry.

Accessories Table

Description For Per Package
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Part Number Price In Stock Add Item
Description For Per Package
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Part Number Price In Stock Add Item
Double Clamps (Aluminum) ISO63 - ISO100 "K" Flanges 1
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QF-SDC-AL1
$6.75 In Stock
Double Clamps (Aluminum) ISO160 - ISO250 "K" Flanges 1
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QF-SDC-AL2
$7.35 In Stock
Double Clamps (Aluminum) ISO320 - ISO500 "K" Flanges 1
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QF-SDC-AL3
$14.10 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO63 "K" Flanges 1
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QF63-SAVR
$51.30 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO80 "K" Flanges 1
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QF80-SAVR
$71.40 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO100 "K" Flanges 1
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QF100-SAVR
$68.35 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO160 "K" Flanges 1
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QF160-SAVR
$89.45 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO200 "K" Flanges 1
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QF200-SAVR
$124.65 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO250 "K" Flanges 1
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QF250-SAVR
$148.75 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO320 "K" Flanges 1
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QF320-SAVR
$425.15 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO400 "K" Flanges 1
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QF400-SAVR
$452.25 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO500 "K" Flanges 1
N/A
QF500-SAVR
$1,335.65 In Stock
Centering Ring (SS with Fluorocarbon O-Ring) ISO630 "K" Flanges 1
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QF630-SAVR
P.O.R. In Stock
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Contact Us - Stainless Steel ISO-K Weld Flanges (Metric Tube)