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Flanges & Components > Adapters & Couplings > Flange to Flange Adapters

CF to ASA Adapter Flanges—Flat & Grooved

Adapter flanges allow the mating of one type of flange system to another. All of our flange adapters are manufactured from 304 series stainless steel tubing and flanges.

NOTE: Mixing flange types using adapters is possible but not recommended unless necessary to match existing components or fittings. However, using one flange type for chamber-mounted components and another type for foreline components is common practice.

Dimensional Drawings

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Ordering Table

(Click column headers to sort data)

Flange
Size/OD
Type Dim
A
Dim
B
ASA Flange
Size
ASA
Flange OD
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Type Dim
A
Dim
B
ASA Flange
Size
ASA
Flange OD
Weight
lbs
PartNo Price Add Item
VacuCADSM
1-1/3" Flat 0.62 0.75 6 11 19
AF0133XAS11
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.75 6 11 19
AF0133XAS11G
P.O.R.
(please log in)
1-1/3" Flat 0.62 0.5 1 4.25 1.5
AF0133XAS4
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.5 1 4.25 1.5
AF0133XAS4G
P.O.R.
(please log in)
1-1/3" Flat 0.62 0.5 1.5 5 3
AF0133XAS5
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.5 1.5 5 3
AF0133XAS5G
P.O.R.
(please log in)
1-1/3" Flat 0.62 0.5 2 6 3
AF0133XAS6
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.5 2 6 3
AF0133XAS6G
P.O.R.
(please log in)
1-1/3" Flat 0.62 0.5 3 7.5 5
AF0133XAS7
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.5 3 7.5 5
AF0133XAS7G
P.O.R.
(please log in)
1-1/3" Flat 0.62 0.5 4 9 9
AF0133XAS9
P.O.R.
(please log in)
1-1/3" Grooved 0.62 0.5 4 9 9
AF0133XAS9G
P.O.R.
(please log in)
2-1/8" Flat 1 0.75 6 11 19
AF0212XAS11
P.O.R.
(please log in)
2-1/8" Grooved 1 0.75 6 11 19
AF0212XAS11G
P.O.R.
(please log in)
2-1/8" Flat 1 0.5 1 4.25 0.5
AF0212XAS4
P.O.R.
(please log in)
2-1/8" Grooved 1 0.5 1 4.25 0.5
AF0212XAS4G
P.O.R.
(please log in)
2-1/8" Flat 1 0.5 1.5 5 3
AF0212XAS5
P.O.R.
(please log in)
2-1/8" Grooved 1 0.5 1.5 5 3
AF0212XAS5G
P.O.R.
(please log in)
2-1/8" Flat 1 0.5 2 6 3
AF0212XAS6
P.O.R.
(please log in)
2-1/8" Grooved 1 0.5 2 6 3
AF0212XAS6G
P.O.R.
(please log in)
2-1/8" Flat 1 0.5 3 7.5 5
AF0212XAS7
P.O.R.
(please log in)
2-1/8" Grooved 1 0.5 3 7.5 5
AF0212XAS7G
P.O.R.
(please log in)
2-1/8" Flat 1 0.5 4 9 9
AF0212XAS9
P.O.R.
(please log in)
2-1/8" Grooved 1 0.5 4 9 9
AF0212XAS9G
P.O.R.
(please log in)
2-3/4" Flat 1.5 0.75 6 11 19
AF0275XAS11
P.O.R.
(please log in)
2-3/4" Grooved 1.5 0.75 6 11 19
AF0275XAS11G
P.O.R.
(please log in)
2-3/4" Flat 1.5 0.5 1.5 5 2
AF0275XAS5
$206.00
(please log in)
2-3/4" Grooved 1.5 0.5 1.5 5 2
AF0275XAS5G
P.O.R.
(please log in)
2-3/4" Flat 1.5 0.5 2 6 3
AF0275XAS6
P.O.R.
(please log in)
2-3/4" Grooved 1.5 0.5 2 6 3
AF0275XAS6G
P.O.R.
(please log in)
2-3/4" Flat 1.5 0.5 3 7.5 4
AF0275XAS7
P.O.R.
(please log in)
2-3/4" Grooved 1.5 0.5 3 7.5 4
AF0275XAS7G
P.O.R.
(please log in)
2-3/4" Flat 1.5 0.5 4 9 8
AF0275XAS9
P.O.R.
(please log in)
2-3/4" Grooved 1.5 0.5 4 9 8
AF0275XAS9G
P.O.R.
(please log in)
3-3/8" Flat 2 0.75 6 11 19
AF0337XAS11
P.O.R.
(please log in)
3-3/8" Grooved 2 0.75 6 11 19
AF0337XAS11G
P.O.R.
(please log in)
3-3/8" Flat 2 0.5 2 6 3
AF0337XAS6
P.O.R.
(please log in)
3-3/8" Grooved 2 0.5 2 6 3
AF0337XAS6G
P.O.R.
(please log in)
3-3/8" Flat 2 0.5 3 7.5 4
AF0337XAS7
P.O.R.
(please log in)
3-3/8" Grooved 2 0.5 3 8.5 4
AF0337XAS7G
P.O.R.
(please log in)
3-3/8" Flat 2 0.5 4 9 8
AF0337XAS9
P.O.R.
(please log in)
3-3/8" Grooved 2 0.5 4 9 8
AF0337XAS9G
P.O.R.
(please log in)
4-1/2" Flat 2.5 0.75 6 11 18
AF0450XAS11
P.O.R.
(please log in)
4-1/2" Grooved 2.5 0.75 6 11 18
AF0450XAS11G
P.O.R.
(please log in)
4-1/2" Flat 2.5 0.5 3 7.5 4
AF0450XAS7
P.O.R.
(please log in)
4-1/2" Grooved 2.5 0.5 3 7.5 4
AF0450XAS7G
P.O.R.
(please log in)
4-1/2" Flat 2.5 0.5 4 9 8
AF0450XAS9
P.O.R.
(please log in)
4-1/2" Grooved 2.5 0.5 4 9 8
AF0450XAS9G
P.O.R.
(please log in)
4-5/8" Flat 3 0.75 6 11 18
AF0462XAS11
P.O.R.
(please log in)
4-5/8" Grooved 3 0.75 6 11 18
AF0462XAS11G
P.O.R.
(please log in)
4-5/8" Flat 3 0.5 4 9 8
AF0462XAS9
P.O.R.
(please log in)
4-5/8" Grooved 3 0.5 4 9 8
AF0462XAS9G
P.O.R.
(please log in)
6" Flat 4 0.75 6 11 15
AF0600XAS11
P.O.R.
(please log in)
6" Grooved 4 0.75 6 11 15
AF0600XAS11G
P.O.R.
(please log in)
6" Flat 4 0.5 4 9 7
AF0600XAS9
P.O.R.
(please log in)
6" Grooved 4 0.5 4 9 7
AF0600XAS9G
P.O.R.
(please log in)
8" Flat 6 0.75 6 11 13
AF0800XAS11
$449.00
(please log in)
8" Grooved 6 0.75 6 11 13
AF0800XAS11G
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
1/4 Hard OFHC Copper Gasket
All 1-1/3" (DN16CF) Flanges
10
1/4 (0.11)
--
GA-0133
$20.90
(please log in)
1/4 Hard OFHC Copper Gasket
All 2-1/8" (DN25CF) Flanges
10
1/4 (0.11)
--
GA-0212
$23.90
(please log in)
1/4 Hard OFHC Copper Gasket
All 2-3/4" (DN35-DN40CF) Flanges
10
1/4 (0.11)
--
GA-0275
$27.20
(please log in)
1/4 Hard OFHC Copper Gasket
All 3-3/8" (DN50CF) Flanges
10
1/2 (0.22)
--
GA-0337
$30.90
(please log in)
1/4 Hard OFHC Copper Gasket
All 4-1/2" (DN63CF) Flanges
10
3/4 (0.34)
--
GA-0450
$37.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 4-5/8" (DN75CF) Flanges
10
1 (0.45)
--
GA-0462
$44.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 6" (DN100CF) Flanges
10
1-1/2 (0.68)
--
GA-0600
$55.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 6-3/4" (DN125CF) Flanges
10
1-1/2 (0.68)
--
GA-0675
$66.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 8" (DN160CF) Flanges
10
2 (0.91)
--
GA-0800
$78.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 10" (DN200CF) Flanges
10
3 (1.36)
--
GA-1000
$96.00
(please log in)
1/4 Hard OFHC Copper Gasket
All 13-1/4" CF Flanges
1
1/4 (0.11)
--
GA-1325
$54.00
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
Blind Tapped 2-1/8" (DN25CF) Flanges
25
1 (0.45)
--
HBK25028088
$15.50
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
Blind Tapped 2-3/4" (DN35-DN40CF) Flanges
25
1 (0.45)
--
HBK25028088
$15.50
(please log in)
5/16—24 x 1-3/4" Bolt & Nut Set
Blind Tapped 3-3/8" (DN50CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
5/16—24 x 2" Bolt & Nut Set
Blind Tapped 4-1/2" (DN63CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
5/16—24 x 2" Bolt & Nut Set
Blind Tapped 4-5/8" (DN75CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
Blind Tapped 6" (DN100CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
Blind Tapped 6-3/4" (DN125CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
Blind Tapped 8" (DN160CF) Flanges
25
2 (0.91)
--
HBK31224125
$30.90
(please log in)
9/16—12 x 1.50" Bolt Sets
Size 1 ASA & 1.5 ASA Flanges
4
3/4 (0.34)
--
HBS563121504
$12.40
N/A
5/8—11 x 1.75" Bolt Sets
Size 2 ASA & 3 ASA Flanges
4
1 (0.45)
--
HBS625111754
$16.00
(please log in)
5/8—11 x 1.75" Bolt Sets
Size 4 ASA Flanges
8
1-1/2 (0.68)
--
HBS625111758
$29.90
(please log in)
3/4—10 x 2.50" Bolt Sets
Size 6 ASA & 8 ASA Flanges
8
2 (0.91)
--
HBS751025008
$47.00
(please log in)
3/4—10 x 2.50" Bolt Sets
Size 10 ASA Flanges
12
2-1/2 (1.13)
--
HBS751025012
$70.00
(please log in)
O-Rings (Fluorocarbon)
Size 1 ASA Flanges
1
1/4 (0.11)
--
O-V223
$21.20
(please log in)
O-Rings (Fluorocarbon)
Size 1.5 ASA Flanges
1
1/4 (0.11)
--
O-V231
$8.50
(please log in)
O-Rings (Fluorocarbon)
Size 2 ASA Flanges
1
1/4 (0.11)
--
O-V238
$21.70
(please log in)
O-Rings (Fluorocarbon)
Size 3 ASA Flanges
1
1/4 (0.11)
--
O-V247
$21.70
(please log in)
O-Rings (Fluorocarbon)
Size 4 ASA Flanges
1
1/4 (0.11)
--
O-V258
$34.00
(please log in)
O-Rings (Fluorocarbon)
Size 6 ASA Flanges
1
1/4 (0.11)
--
O-V266
$23.70
(please log in)
O-Rings (Fluorocarbon)
Size 8 ASA Flanges
1
1/4 (0.11)
--
O-V274
$21.70
(please log in)
O-Rings (Fluorocarbon)
Size 10 ASA Flanges
1
1/4 (0.11)
--
O-V278
$24.80
(please log in)
8—32 x 3/4" (Skt Hd) Bolt & Nut Set
Blind Tapped 1-1/3" (DN16CF) Flanges
25
1/4 (0.11)
--
SBK832050
$13.40
(please log in)
Molded O-Rings (Buna-N2)
Size 4 ASA Flanges
1
1/4 (0.11)
--
VR701GL40B
P.O.R.
N/A
Gasket Removal Tool
All CF Flanges
1
1/4 (0.11)
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
All CF Flanges
1
1/4 (0.11)
--
VZTL-4OZ
P.O.R.
N/A

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