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Flanges & Components > ConFlat (CF) Flanges & Components > ConFlat (CF) Nipples

Conical Reducer Nipples

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Nipple Builder
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We fabricate these CF nipples (spools) for UHV systems from 304L stainless steel tubing and knife-edge (ConFlat) flanges. The CF flange is the most widely used for high vacuum and UHV applications. Many gauges, instruments, accessories and feedthroughs are available on this flange system.

CF Nipples Feature:

  • Half nipples feature one fixed flange (either tapped or through-hole bolt holes)
  • Full nipples feature one fixed and one rotatable flange (through-hole bolt holes)
  • Conical and straight reducer nipples adapt two different flange sizes
  • Common lengths and tube diameters listed; contact us with your specific requirements

Dimensional Drawings

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VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table

(Click column headers to sort data)

Flange
Size/OD
(large)
Flange
Size/OD
Bore Dim
A
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
(large)
Flange
Size/OD
Bore Dim
A
Weight
lbs
PartNo Price Add Item
VacuCADSM
2-1/8" 1-1/3") 0.62 2.04 1
CRN212X133
$150.00
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2-3/4" 1-1/3" 0.62 3.08 1.5
CRN275X133
$139.00
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2-3/4" 2-1/8" 0.87 2.75 2
CRN275X212
$134.00
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3-3/8" 2-1/8" 0.87 2.77 3
CRN337X212
$145.00
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3-3/8" 2-3/4" 1.37 2.81 2.5
CRN337X275
$145.00
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4-1/2" 2-3/4" 1.37 2.96 4
CRN450X275
$170.00
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4-1/2" 3-3/8" 1.87 2.98 5
CRN450X337
$196.00
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4-5/8" 2-3/4" 1.37 4.12 5
CRN462X275
$410.00
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4-5/8" 3-3/8" 1.87 4.13 6
CRN462X337
$212.00
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4-5/8" 4-1/2" 2.37 4.28 7
CRN462X450
$279.00
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6" 3-3/8" 1.87 4.28 8
CRN600X337
$279.00
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6" 4-1/2" 2.37 4.43 9
CRN600X450
$294.00
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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 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
1-1/3" (DN16CF) Flanges
10
1/4 (0.11)
--
GA-0133
$20.90
(please log in)
1/4 Hard OFHC Copper Gasket
2-1/8" (DN25CF) Flanges
10
1/4 (0.11)
--
GA-0212
$23.90
(please log in)
1/4 Hard OFHC Copper Gasket
2-3/4" (DN35-DN40CF) Flanges
10
1/4 (0.11)
--
GA-0275
$27.20
(please log in)
1/4 Hard OFHC Copper Gasket
3-3/8" (DN50CF) Flanges
10
1/2 (0.22)
--
GA-0337
$30.90
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1/4 Hard OFHC Copper Gasket
4-1/2" (DN63CF) Flanges
10
3/4 (0.33)
--
GA-0450
$37.00
(please log in)
1/4 Hard OFHC Copper Gasket
4-5/8”(DN80) CF Flanges
10
1 (0.45)
--
GA-0462
$44.00
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1/4 Hard OFHC Copper Gasket
6" (DN100CF) Flanges
10
1-1/2 (0.68)
--
GA-0600
$55.00
(please log in)
1/4—28 x 1-3/8" Reducer Bolt Set
2-1/8" (DN25CF) Flanges
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
1/4—28 x 1-3/8" Reducer Bolt Set
2-3/4" (DN35-DN40CF) Flanges
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
5/16"—24 x 1-3/4" Reducer Bolt Set
3-3/8”(DN50) CF Flanges
25
2 (0.91)
--
HBS31224175
$39.00
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5/16"—24 x 2" Reducer Bolt Set
4-5/8”(DN80) CF Flanges
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16"—24 x 2" Reducer Bolt Set
4-1/2”(DN63) CF Flanges
32
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16"—24 x 2-1/4" Reducer Bolt Set
6" (DN100CF) Flanges
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
Gasket Clips for CF Flanges
All CF Flanges
10
1/4 (0.11)
Download PDF
VGC0275S
$61.00
N/A
Gasket Removal Tool
All CF Nipples
1
1/4 (0.11)
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
All CF Nipples
1
1/4 (0.11)
--
VZTL-4OZ
P.O.R.
N/A

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