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Stainless Steel to 7740 Pyrex CF Adapters

Glass to metal tube flanged adapters (seals) use a graded glass seal to join a metal tube to a glass tube. They are often used to observe a process or to provide electrical isolation.

Glass to Metal Tube Flanged Adapters Feature:

  • Glass seal materials available include 7740 Pyrex and 7052 Glass
  • Metal seal materials available include Kovar or stainless steel
  • Tube End Type Bakeable to 400°C
  • CF Flanged Type Bakeable to 400°C
  • ISO Flanged Type Bakeable to 200°C (Bake Temperature is O-Ring Seal Dependant)
  • CF or KF flange terminations available
  • Seal Configurations Available:
    • glass tube - metal tube
    • glass dome end - metal tube
    • glass tube - metal tube - glass tube
    • metal tube - glass tube - metal tube
    • glass tube - flex hose - metal tube
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Contact Us
To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
Note:
  • We also offer nonstandard sizes, larger sizes, custom lengths, and adapters with bellows (to compensate for misalignments). Please contact us for details.

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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
Gasket, Copper, DN16CF (1.33" OD) Flange , 0.837" OD, 0.640" ID, (10) Per Package 1-1/3" (DN16CF) Nipples 10
(please log in)
GA-0133
$21.05 In Stock
Gasket, Copper, DN25 (2.125" OD) Flange, 1.291" OD, 1.010" ID, (10) Per Package 2-1/8" (DN25CF) Nipples 10
(please log in)
GA-0212
$24.05 In Stock
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, 1.895" OD, 1.451" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Nipples 10
(please log in)
GA-0275
$27.35 In Stock
Gasket, Copper, DN35CF-DN40CF (2.75" OD) Flange, Large Bore, 1.895" OD, 1.528" ID, (10) Per Package 2-3/4" (DN35-DN40CF) Nipples 10
(please log in)
GA-0275LB
$27.35 In Stock
Gasket, Copper, DN50CF (3.375" OD) Flange, 2.425" OD, 2.010" ID, (10) Per Package 3-3/8" (DN50CF) Nipples 10
(please log in)
GA-0337
$31.10 In Stock
Gasket, Copper, DN63CF (4.50" OD) Flange, 3.243" OD, 2.506" ID, (10) Per Package 4-1/2" (DN63CF) Nipples 10
(please log in)
GA-0450
$37.20 In Stock
Gasket, Copper, DN75CF (4.625" OD) Flange, 3.598" OD x 3.010" ID, (10) Per Package 4-5/8" (DN75CF) Nipples 10
(please log in)
GA-0462
$44.25 In Stock
Gasket, Copper, DN100CF (6.00" OD) Flange, 4.743" OD,4.006" ID, (10) Per Package 6" (DN100CF) Nipples 10
(please log in)
GA-0600
$55.30 In Stock
Gasket, Copper, DN125CF (6.75" OD) Flange, 5.567" OD x 5.010" ID, (10) Per Package 6-3/4" (DN125CF) Nipples 10
(please log in)
GA-0675
$66.35 In Stock
Gasket, Copper, DN160CF (8.00" OD) Flange, 6.743" OD, 6.007" ID, (10) Per Package 8" (DN160CF) Nipples 10
(please log in)
GA-0800
$78.40 In Stock
Gasket, Copper, DN200CF (10.00" OD) Flange, 8.743" OD, 8.007" ID, (10) Per Package 10" (DN200CF) Nipples 10
(please log in)
GA-1000
$96.50 In Stock
Gasket, Copper, DN275CF (13.25" OD) Flange, 11.590" OD, 10.845" ID, (1) Per Package 13-1/4" CF Nipples 1
(please log in)
GA-1325
$54.30 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 1.38" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-1/8" (DN25CF) Nipples 25
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HBS25028138
$30.50 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 1/4-28 x 1.38" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 2-3/4" (DN35-DN40CF) Nipples 25
(please log in)
HBS25028138
$30.50 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 1.75" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 3-3/8" (DN50CF) Nipples 25
(please log in)
HBS31224175
$39.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 4-1/2" (DN63CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 4-5/8" (DN75CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.00" Long Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 6" (DN100CF) Nipples 25
(please log in)
HBS31224200
$33.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.25" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 8" (DN160CF) Nipples 25
(please log in)
HBS31224225
$39.20 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.25" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 6-3/4" (DN125CF) Nipples 25
(please log in)
HBS31224225
$39.20 In Stock
Hex,bolt, Nut & Washer Set, Stainless Steel, (25) 5/16-24 x 2.50" Hex Bolts, (25) Hex Nuts, & (50) Flat Washers 10" (DN200CF) Nipples 25
(please log in)
HBS31224250
$30.05 In Stock
Hex Bolt, Nut & Washer Set, Stainless Steel, (30) 3/8-24 x 3.00" Hex Bolts, (30) Hex Nuts, & (60) Flat Washers 13-1/4" CF Nipples 30
N/A
HBS37524300
$48.25 In Stock
Socket Head Cap Screw & Nut Set, Stainless Steel, DN16CF (1.33" OD) Flange, (25) 8-32 x 0.75" Long Socket Head Cap Screws & (25) Hex Nuts 1-1/3" (DN16CF) Nipples 25
N/A
SBS832075S4-25
P.O.R. In Stock
Gasket Removal Tool, For All Conflat (CF) Flange Sizes All CF Nipples 1
N/A
VZGRT
$38.20 In Stock
Thread Lubricant, 4 Ounce Tube All CF Nipples 1
N/A
VZTL-4OZ
P.O.R. In Stock
How to Combine Click the checkboxes of the parts you would like to purchase and then click the button below to add all parts selected into your Cart.
Contact Us - Stainless Steel to 7740 Pyrex CF Adapters