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Ring Wire-Seal Flanges

The Wire Seal flange system is used for UHV applications.

Wire seal flanges are sexed—with male/female flanges forming a mating pair that captures an OFHC copper "o-ring" gasket under extreme compression. Standard flange sizes are 10" (254mm) to 24" (610mm) in diameter; the seal is OFHC copper wire, 0.080" (2mm) in diameter and repeatedly bakeable to 450°C.

Wire seal flanges are offered in three versions:

  • Bored ring flanges - Bored flange
  • Solid blank flanges - Flat blank flange with uniform thickness
  • Domed blank flanges - Lighter blank flange with a thick ring for bolts and seal, blanked by a domed light-gauge centerpiece
Contact Us
To speak with someone directly, please call +1 412 387 9200 or email international@lesker.com.
Note:
  • Since no international standards exist for wire-seal flanges of any size, we have designed ours to fit with flanges from other major manufacturers. However, you can only guarantee compatibility by purchasing both male and female flanges from the same manufacturer.

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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
VacuCADSM
Part Number Price In Stock Add Item
Description For Per Package
VacuCADSM
Part Number Price In Stock Add Item
Bolt/Nut Sets 19-9/16" Wire-Seal 36
N/A
WSFBS-19
$202.05 Call for Availability
Bolt/Nut Sets 22-1/8" Wire-Seal 36
N/A
WSFBS-22
$269.35 Call for Availability
Bolt/Nut Sets 27-1/8" Wire-Seal 40
N/A
WSFBS-27
$305.55 Call for Availability
Copper Wire Gaskets 19-9/16" Wire-Seal 1
N/A
WSFG-19+
P.O.R. Call for Availability
Copper Wire Gaskets 22-1/8" Wire-Seal 1
N/A
WSFG-22
$88.45 In Stock
Copper Wire Gaskets 27-1/8" Wire-Seal 1
N/A
WSFG-27
$89.45 Call for Availability