About 8,000 types of vacuum components in stock at all times.Business Hours： 9:00-18:00, excluding weekends and holidays

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  • Feedthrough Feedthrough
    Feedthrough
  • Isolator Isolator
    Isolator
  • Viewport Viewport
    Viewport
  • Vacuum Component Vacuum Component
    Vacuum Component
  • Vacuum Valve Vacuum Valve
    Vacuum Valve
  • Vented Screw Vented Screw
    Vented Screw
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Contact Us
Shipping accepted on the day on orders until 17:00
(Hours 9:00 to 18:00 except Saturdays, Sundays, and holidays)
  1. Cosmotec for Vacuum Components
  2. Viewport
  3. Borosilicate
  4. viewport borosilicate glass
  1. Cosmotec for Vacuum Components
  2. Vacuum Component
  3. JIS VF / VG standards
  4. Viewport
  5. viewport borosilicate glass
  1. Cosmotec for Vacuum Components
  2. Vacuum Component
  3. NW / KF standard
  4. Viewport
  5. viewport borosilicate glass
  1. Cosmotec for Vacuum Components
  2. Vacuum Component
  3. ICF standards
  4. Viewport
  5. viewport borosilicate glass

viewport borosilicate glass

viewport borosilicate glass

▼Viewport Borosilicate Glass (Kovar®)
Borosilicate glass/Duran®: for visual inspection inside the chamber
Materials such as quartz and sapphire are available for optical use

▼ The following types are standardized
Flanges: NW/KF, ICF, JIS-VF, JIS-VG, CeFiX®, Sanitary
Window materials are Borosilicate glass, Borosilicate glass Sapphire (Al2O3),.
Fused silica (SiO2),.
Synthetic Quartz ( SiO2),.
Magnesium Fluoride (MgF2),.
Calcium Fluoride (CaF2),
Barium Fluoride(BaF2)
Germanium (Ge),.
Zinc Selenide (ZnSe),.
lead glass as standard products.
Non-magnetic flanges (titanium, SUS316L) are also available.
Viewports that can be opened and closed (list) is also available.

▼Options (ICF flange only)
Viewport cover (List)
Viewport Shutter(List)

▼Custom-made products are also available.
We can change the window material and flange size. AR coating is also available. Please contact us by clicking the "Inquiry" button on the right side of the page.
※When requesting AR coating, please let us know the wavelength used, and if laser resistance is required, please let us know the details of the laser to be used.

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Basic Information
Flange material SUS 304
window Borosilicate glass
Maximum temperature 350℃
Leak rate <1.0x10-8Pa･㎥/sec
RoHS2 corresponding ○
Inquiry for this subcategory

We have 40 type candidate

※ Please click on the product code or model for more information.

front.product.product_code
Model
 NW/KF ICF VF VG ISO-K A T (glass thickness) V (effective diameter) H1 H2 G1 G2 Hole diameter(depth) Number of holes O-ring standard
Stock & Delivery
front.product.price
front.product.tax_included2
20145
NW16VPK
16 - - - - 30 1.6 16 12.7 - - - - - -
20197
NW25VPK
25 - - - - 40 1.6 16 12.7 - - - - - -
20232
NW40VPK
40 - - - - 55 3 32 12.7 - - - - - -
20255
NW50VPK
50 - - - - 75 3 32 12.7 - - - - - -
20066
ICF34VPK
- 34 - - - 34 1 16 12 - - - φ4.5 6 -
20104
ICF70VPK
- 70 - - - 70 2.5 38 12.7 - - - φ6.8 6 -
20017
ICF114VPK
- 114 - - - 113.5 3 62.8 17.5 - - - φ8.4 8 -
20031
ICF152VPK
- 152 - - - 150 6 90 20 - - - φ8.5 16 -
20440
ICF203VPK
- 203 - - - 202.4 8 136 22.6 - - - φ8.5 20 -
20731
ICF253VPK
- 253 - - - 253 8 136 24.6 - - - φ8.5 24 -
21279
VF10VPK
- - 10 - - 70 1.7 15.7 8 - - - φ10 4 V24
21280
VF20VPK
- - 20 - - 80 1.7 15.7 8 - - - φ10 4 V34
21281
VF25VPK
- - 25 - - 90 2.8 37 16 8 - - φ10 4 V40
21282
VF40VPK
- - 40 - - 105 2.8 37 10.5 10 - - φ10 4 V55
21283
VF50VPK
- - 50 - - 120 3 65 20 10 - - φ10 4 V70
21284
VF65VPK
- - 65 - - 145 3 65 15.5 10 - - φ12 4 V85
21285
VF80VPK
- - 80 - - 160 3 65 15.5 12 - - φ12 4 V100
21286
VF100VPK
- - 100 - - 185 6 91 17.5 12 - - φ12 8 V120
21287
VF125VPK
- - 125 - - 210 6 91 17.5 12 - - φ12 8 V150
21288
VF150VPK
- - 150 - - 235 8 136 17.4 12 - - φ12 8 V175
21289
VF200VPK
- - 200 - - 300 8 136 17.4 16 - - φ15 8 V225
21290
VF250VPK
- - 250 - - 350 8 136 17.4 16 - - φ15 12 V275
21291
VF300VPK
- - 300 - - 400 8 136 17.4 16 - - φ15 12 V325
21266
VG10VPK
- - - 10 - 70 1.7 15.7 8 - 34 24 φ10 4 V24
21267
VG20VPK
- - - 20 - 80 1.7 15.7 8 - 44 34 φ10 4 V34
21268
VG25VPK
- - - 25 - 90 2.8 37 16 8 50 40 φ10 4 V40
21269
VG40VPK
- - - 40 - 105 2.8 37 10.5 10 65 55 φ10 4 V55
21270
VG50VPK
- - - 50 - 120 3 65 20 10 80 70 φ10 4 V70
21271
VG65VPK
- - - 65 - 145 3 65 15.5 10 95 85 φ12 4 V85
21272
VG80VPK
- - - 80 - 160 3 65 15.5 12 110 100 φ12 4 V100
21273
VG100VPK
- - - 100 - 185 6 91 17.5 12 130 120 φ12 8 V120
21274
VG125VPK
- - - 125 - 210 6 91 17.5 12 160 150 φ12 8 V150
21275
VG150VPK
- - - 150 - 235 8 136 17.4 12 185 175 φ12 8 V175
21276
VG200VPK
- - - 200 - 300 8 136 17.4 16 241 225 φ15 8 V225
21277
VG250VPK
- - - 250 - 350 8 136 17.4 16 291 275 φ15 12 V275
21278
VG300VPK
- - - 300 - 400 8 136 17.4 16 341 325 φ15 12 V325
22900
ISOK63VPK
- - - - 63 95 3.5 49 14 12 70 57.2 - - -
22901
ISOK80VPK
- - - - 80 110 3.5 49 14 12 83 69.9 - - -
22902
ISOK100VPK
- - - - 100 130 3.5 63 12 12 102.7 88.9 - - -
22903
ISOK160VPK
- - - - 160 180.1 6 90 18 12 153 139.7 - - -
NW/KF ICF VF VG ISO-K A T (glass thickness) V (effective diameter) H1 H2 G1 G2 Hole diameter(depth) Number of holes O-ring standard
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Shipping accepted on the day on orders until 17:00 Hours 9:00 to 18:00 except Saturdays, Sundays, and holidays
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