Representative Image

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

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

(Click column headers to sort data)

Flange
Size/OD

Drawing

Glass
Size

Dim
L

Dim
G

VacuCAD^SM

Part
Number

Price

In Stock

Add To
Cart

Flange
Size/OD

Drawing

Glass
Size

Dim
L

Dim
G

VacuCAD^SM

Part
Number

Price

In Stock

Add To
Cart

DN16CF (1.33" OD)

0.19

4.88

N/A

GMPS018F1

$174.50

DN16CF (1.33" OD)

0.25

4.88

N/A

GMPS025F1

$154.00

DN16CF (1.33" OD)

0.31

4.88

N/A

GMPS031F1

$154.00

DN16CF (1.33" OD)

0.38

4.88

N/A

GMPS037F1

$154.00

DN16CF (1.33" OD)

0.5

4.88

N/A

GMPS050F1

$174.50

DN16CF (1.33" OD)

0.63

4.88

N/A

GMPS062F1

$184.50

DN16CF (1.33" OD)

0.75

4.88

N/A

GMPS075F1

$190.00

DN35CF-DN40CF (2.75" OD)

0.75

4.88

N/A

GMPS075F3

P.O.R.

DN35CF-DN40CF (2.75" OD)

0.88

4.88

N/A

GMPS087F3

$241.00

DN35CF-DN40CF (2.75" OD)

4.88

N/A

GMPS100F3

$241.00

DN35CF-DN40CF (2.75" OD)

1.13

4.88

N/A

GMPS112F3

$241.00

DN35CF-DN40CF (2.75" OD)

1.25

4.88

N/A

GMPS125F3

$241.00

DN35CF-DN40CF (2.75" OD)

1.38

4.88

N/A

GMPS137F3

$241.00

DN35CF-DN40CF (2.75" OD)

1.5

4.88

N/A

GMPS150F3

$292.50

DN50CF (3.38" OD)

1.5

4.88

N/A

GMPS150F4

$307.50

DN50CF (3.38" OD)

1.63

4.88

N/A

GMPS162F4

$359.00

DN50CF (3.38" OD)

1.75

4.88

N/A

GMPS175F4

$384.50

DN50CF (3.38" OD)

5.38

N/A

GMPS200F4

$430.50

DN63CF (4.50" OD)

5.38

N/A

GMPS200F5

$461.50

DN63CF (4.50" OD)

2.25

5.38

N/A

GMPS225F5

$477.00

DN63CF (4.50" OD)

2.5

5.38

N/A

GMPS250F5

$543.50

DN75CF (4.63" OD)

2.75

6.38

N/A

GMPS275F6

$579.50

DN75CF (4.63" OD)

6.38

N/A

GMPS300F6

$646.00

DN100CF (6.00" OD)

6.38

N/A

GMPS300F7

$676.50

DN100CF (6.00" OD)

3.25

6.38

N/A

GMPS325F7

$779.00

DN100CF (6.00" OD)

3.5

6.38

N/A

GMPS350F7

$799.50

DN100CF (6.00" OD)

3.75

6.38

N/A

GMPS375F7

$820.00

DN100CF (6.00" OD)

6.38

N/A

GMPS400F7

$803.00

DN125CF (6.75" OD)

8.38

N/A

GMPS500F8

$1,082.50

DN160CF (8.00" OD)

8.38

N/A

GMPS600F9

$1,399.50

Flange
Size/OD

Drawing

Glass
Size

Dim
L

Dim
G

VacuCAD^SM

Part
Number

Price

In Stock

Add To
Cart

Flange
Size/OD

Drawing

Glass
Size

Dim
L

Dim
G

VacuCAD^SM

Part
Number

Price

In Stock

Add To
Cart

DN16CF (1.33" OD)

4.8

124

76.2

N/A

GMPS018F1

$174.50

DN16CF (1.33" OD)

6.4

124

76.2

N/A

GMPS025F1

$154.00

DN16CF (1.33" OD)

7.9

124

76.2

N/A

GMPS031F1

$154.00

DN16CF (1.33" OD)

9.7

124

76.2

N/A

GMPS037F1

$154.00

DN16CF (1.33" OD)

12.7

124

76.2

N/A

GMPS050F1

$174.50

DN16CF (1.33" OD)

124

76.2

N/A

GMPS062F1

$184.50

DN16CF (1.33" OD)

19.1

124

76.2

N/A

GMPS075F1

$190.00

DN35CF-DN40CF (2.75" OD)

19.1

124

76.2

N/A

GMPS075F3

P.O.R.

DN35CF-DN40CF (2.75" OD)

22.4

124

76.2

N/A

GMPS087F3

$241.00

DN35CF-DN40CF (2.75" OD)

25.4

124

76.2

N/A

GMPS100F3

$241.00

DN35CF-DN40CF (2.75" OD)

28.7

124

76.2

N/A

GMPS112F3

$241.00

DN35CF-DN40CF (2.75" OD)

31.8

124

76.2

N/A

GMPS125F3

$241.00

DN35CF-DN40CF (2.75" OD)

35.1

124

76.2

N/A

GMPS137F3

$241.00

DN35CF-DN40CF (2.75" OD)

38.1

124

76.2

N/A

GMPS150F3

$292.50

DN50CF (3.38" OD)

38.1

124

76.2

N/A

GMPS150F4

$307.50

DN50CF (3.38" OD)

41.4

124

76.2

N/A

GMPS162F4

$359.00

DN50CF (3.38" OD)

44.5

124

76.2

N/A

GMPS175F4

$384.50

DN50CF (3.38" OD)

50.8

136.7

76.2

N/A

GMPS200F4

$430.50

DN63CF (4.50" OD)

50.8

136.7

76.2

N/A

GMPS200F5

$461.50

DN63CF (4.50" OD)

57.2

136.7

76.2

N/A

GMPS225F5

$477.00

DN63CF (4.50" OD)

63.5

136.7

76.2

N/A

GMPS250F5

$543.50

DN75CF (4.63" OD)

69.9

162.1

76.2

N/A

GMPS275F6

$579.50

DN75CF (4.63" OD)

76.2

162.1

101.6

N/A

GMPS300F6

$646.00

DN100CF (6.00" OD)

76.2

162.1

101.6

N/A

GMPS300F7

$676.50

DN100CF (6.00" OD)

82.6

162.1

101.6

N/A

GMPS325F7

$779.00

DN100CF (6.00" OD)

88.9

162.1

101.6

N/A

GMPS350F7

$799.50

DN100CF (6.00" OD)

95.3

162.1

101.6

N/A

GMPS375F7

$820.00

DN100CF (6.00" OD)

101.6

162.1

101.6

N/A

GMPS400F7

$803.00

DN125CF (6.75" OD)

127

212.9

152.4

N/A

GMPS500F8

$1,082.50

DN160CF (8.00" OD)

152.4

212.9

152.4

N/A

GMPS600F9

$1,399.50

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

VacuCAD^SM

Part Number

Price

In Stock

Add Item

Description

For

Per Package

VacuCAD^SM

Part Number

Price

In Stock

Add Item

1/4 Hard OFHC Copper Gasket

1-1/3" (DN16CF) Nipples

(please log in)

GA-0133

$21.05

1/4 Hard OFHC Copper Gasket

2-1/8" (DN25CF) Nipples

(please log in)

GA-0212

$24.05

1/4 Hard OFHC Copper Gasket

2-3/4" (DN35-DN40CF) Nipples

(please log in)

GA-0275

$27.35

1/4 Hard, 1.53" I.D.* OFHC Copper Gasket

2-3/4" (DN35-DN40CF) Nipples

(please log in)

GA-0275LB

$27.35

1/4 Hard OFHC Copper Gasket

3-3/8" (DN50CF) Nipples

(please log in)

GA-0337

$31.10

1/4 Hard OFHC Copper Gasket

4-1/2" (DN63CF) Nipples

(please log in)

GA-0450

$37.20

1/4 Hard OFHC Copper Gasket

4-5/8" (DN75CF) Nipples

(please log in)

GA-0462

$44.25

1/4 Hard OFHC Copper Gasket

6" (DN100CF) Nipples

(please log in)

GA-0600

$55.30

1/4 Hard OFHC Copper Gasket

6-3/4" (DN125CF) Nipples

(please log in)

GA-0675

$66.35

1/4 Hard OFHC Copper Gasket

8" (DN160CF) Nipples

(please log in)

GA-0800

$78.40

1/4 Hard OFHC Copper Gasket

10" (DN200CF) Nipples

(please log in)

GA-1000

$96.50

1/4 Hard OFHC Copper Gasket

13-1/4" CF Nipples

(please log in)

GA-1325

$54.30

1/4—28 x 1-3/8" Bolt & Nut Set

2-1/8" (DN25CF) Nipples

(please log in)

HBS25028138

$30.50

1/4—28 x 1-3/8" Bolt & Nut Set

2-3/4" (DN35-DN40CF) Nipples

(please log in)

HBS25028138

$30.50

5/16—24 x 1-3/4" Bolt & Nut Set

3-3/8" (DN50CF) Nipples

(please log in)

HBS31224175

$39.20

5/16—24 x 2" Bolt & Nut Set

4-1/2" (DN63CF) Nipples

(please log in)

HBS31224200

$33.20

5/16—24 x 2" Bolt & Nut Set

4-5/8" (DN75CF) Nipples

(please log in)

HBS31224200

$33.20

5/16—24 x 2" Bolt & Nut Set

6" (DN100CF) Nipples

(please log in)

HBS31224200

$33.20

5/16—24 x 2-1/4" Bolt & Nut Set

8" (DN160CF) Nipples

(please log in)

HBS31224225

$39.20

5/16—24 x 2-1/4" Bolt & Nut Set

6-3/4" (DN125CF) Nipples

(please log in)

HBS31224225

$39.20

5/16—24 x 2-1/2" Bolt & Nut Set

10" (DN200CF) Nipples

(please log in)

HBS31224250

$30.05

3/8—24 x 3" Bolt & Nut Set

13-1/4" CF Nipples

N/A

HBS37524300

$48.25

8—32 x 3/4" (Skt Hd) Bolt & Nut Set

1-1/3" (DN16CF) Nipples

N/A

SBS832075S4-25

P.O.R.

Gasket Removal Tool

All CF Nipples

N/A

VZGRT

$38.20

4 oz. Tube Anti-Seize Thread Lube

All CF Nipples

N/A

VZTL-4OZ

P.O.R.