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Flanges & Components > Wire-Seal Flanges & Hardware

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

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.

Dimensional Drawings

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Ordering Table

(Click column headers to sort data)

Flange
Size/OD
Nominal
Tube OD
Type Bolt
Holes
Flange
Thickness
Flange
BCD
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Nominal
Tube OD
Type Bolt
Holes
Flange
Thickness
Flange
BCD
Weight
lbs
PartNo Price Add Item
VacuCADSM
19-9/16" 16 Bored Ring 36 1.31 17.87 34
WSFB19X1600F
P.O.R.
(please log in)
19-9/16" 16 Bored Ring 36 1.31 17.87 34
WSFB19X1600M
$2,943.00
(please log in)
22-1/8" 18 Bored Ring 36 1.5 20.18 51
WSFB22X1800F
P.O.R.
(please log in)
22-1/8" 18 Bored Ring 36 1.5 20.18 51
WSFB22X1800M
P.O.R.
(please log in)
27-1/8" 24 Bored Ring 40 1.75 25.84 60
WSFB27X2400F
P.O.R.
(please log in)
27-1/8" 24 Bored Ring 40 1.75 25.84 60
WSFB27X2400M
P.O.R.
(please log in)
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 Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Bolt/Nut Sets
19-9/16" Wire-Seal
36
12 (5.44)
--
WSFBS-19
$201.00
N/A
Bolt/Nut Sets
22-1/8" Wire-Seal
36
18 (8.16)
--
WSFBS-22
$268.00
N/A
Bolt/Nut Sets
27-1/8" Wire-Seal
40
22 (9.97)
--
WSFBS-27
$304.00
N/A
Copper Wire Gaskets
19-9/16" Wire-Seal
1
1 (0.45)
--
WSFG-19+
P.O.R.
N/A
Copper Wire Gaskets
22-1/8" Wire-Seal
1
1 (0.45)
--
WSFG-22
$88.00
N/A
Copper Wire Gaskets
27-1/8" Wire-Seal
1
1 (0.45)
--
WSFG-27
$89.00
N/A

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