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.

see next
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 - - - - - -
stock
9 1-2 Business Days
waiting for completion
10 Arrival on Dec 25,2024
When out of stock
Answered later
25,700JPY (with tax 28,270JPY)
20197
NW25VPK
25 - - - - 40 1.6 16 12.7 - - - - - -
stock
50 1-2 Business Days
When out of stock
Answered later
25,900JPY (with tax 28,490JPY)
20232
NW40VPK
40 - - - - 55 3 32 12.7 - - - - - -
stock
85 1-2 Business Days
waiting for completion
10 Arrival on Jan 24,2025
When out of stock
Answered later
27,700JPY (with tax 30,470JPY)
20255
NW50VPK
50 - - - - 75 3 32 12.7 - - - - - -
stock
7 1-2 Business Days
waiting for completion
5 Arrival on Jan 27,2025
When out of stock
Answered later
27,900JPY (with tax 30,690JPY)
20066
ICF34VPK
- 34 - - - 34 1 16 12 - - - φ4.5 6 -
When out of stock
Answered later
21,100JPY (with tax 23,210JPY)
20104
ICF70VPK
- 70 - - - 70 2.5 38 12.7 - - - φ6.8 6 -
stock
86 1-2 Business Days
When out of stock
Answered later
23,100JPY (with tax 25,410JPY)
20017
ICF114VPK
- 114 - - - 113.5 3 62.8 17.5 - - - φ8.4 8 -
stock
22 1-2 Business Days
waiting for completion
10 Arrival on Jan 10,2025
When out of stock
Answered later
47,100JPY (with tax 51,810JPY)
20031
ICF152VPK
- 152 - - - 150 6 90 20 - - - φ8.5 16 -
stock
6 1-2 Business Days
waiting for completion
3 Arrival on Dec 25,2024
When out of stock
Answered later
77,100JPY (with tax 84,810JPY)
20440
ICF203VPK
- 203 - - - 202.4 8 136 22.6 - - - φ8.5 20 -
stock
70 1-2 Business Days
When out of stock
Answered later
147,100JPY (with tax 161,810JPY)
20731
ICF253VPK
- 253 - - - 253 8 136 24.6 - - - φ8.5 24 -
stock
1 1-2 Business Days
When out of stock
30 Business Days
217,100JPY (with tax 238,810JPY)
21279
VF10VPK
- - 10 - - 70 1.7 15.7 8 - - - φ10 4 V24
stock
7 1-2 Business Days
When out of stock
30 Business Days
52,200JPY (with tax 57,420JPY)
21280
VF20VPK
- - 20 - - 80 1.7 15.7 8 - - - φ10 4 V34
When out of stock
30 Business Days
52,800JPY (with tax 58,080JPY)
21281
VF25VPK
- - 25 - - 90 2.8 37 16 8 - - φ10 4 V40
stock
4 1-2 Business Days
When out of stock
30 Business Days
69,800JPY (with tax 76,780JPY)
21282
VF40VPK
- - 40 - - 105 2.8 37 10.5 10 - - φ10 4 V55
stock
2 1-2 Business Days
When out of stock
30 Business Days
70,500JPY (with tax 77,550JPY)
21283
VF50VPK
- - 50 - - 120 3 65 20 10 - - φ10 4 V70
stock
1 1-2 Business Days
waiting for completion
2 Arrival on Dec 26,2024
When out of stock
30 Business Days
98,700JPY (with tax 108,570JPY)
21284
VF65VPK
- - 65 - - 145 3 65 15.5 10 - - φ12 4 V85
stock
2 1-2 Business Days
When out of stock
30 Business Days
100,200JPY (with tax 110,220JPY)
21285
VF80VPK
- - 80 - - 160 3 65 15.5 12 - - φ12 4 V100
stock
5 1-2 Business Days
When out of stock
30 Business Days
101,700JPY (with tax 111,870JPY)
21286
VF100VPK
- - 100 - - 185 6 91 17.5 12 - - φ12 8 V120
stock
1 1-2 Business Days
waiting for completion
1 Arrival on Feb 27,2025
When out of stock
30 Business Days
158,400JPY (with tax 174,240JPY)
21287
VF125VPK
- - 125 - - 210 6 91 17.5 12 - - φ12 8 V150
stock
2 1-2 Business Days
When out of stock
30 Business Days
160,700JPY (with tax 176,770JPY)
21288
VF150VPK
- - 150 - - 235 8 136 17.4 12 - - φ12 8 V175
stock
3 1-2 Business Days
When out of stock
30 Business Days
230,400JPY (with tax 253,440JPY)
21289
VF200VPK
- - 200 - - 300 8 136 17.4 16 - - φ15 8 V225
stock
2 1-2 Business Days
When out of stock
30 Business Days
245,100JPY (with tax 269,610JPY)
21290
VF250VPK
- - 250 - - 350 8 136 17.4 16 - - φ15 12 V275
When out of stock
30 Business Days
270,000JPY (with tax 297,000JPY)
21291
VF300VPK
- - 300 - - 400 8 136 17.4 16 - - φ15 12 V325
When out of stock
30 Business Days
307,800JPY (with tax 338,580JPY)
21266
VG10VPK
- - - 10 - 70 1.7 15.7 8 - 34 24 φ10 4 V24
stock
2 1-2 Business Days
When out of stock
30 Business Days
52,200JPY (with tax 57,420JPY)
21267
VG20VPK
- - - 20 - 80 1.7 15.7 8 - 44 34 φ10 4 V34
stock
1 1-2 Business Days
When out of stock
30 Business Days
52,800JPY (with tax 58,080JPY)
21268
VG25VPK
- - - 25 - 90 2.8 37 16 8 50 40 φ10 4 V40
stock
9 1-2 Business Days
When out of stock
30 Business Days
69,800JPY (with tax 76,780JPY)
21269
VG40VPK
- - - 40 - 105 2.8 37 10.5 10 65 55 φ10 4 V55
stock
7 1-2 Business Days
When out of stock
30 Business Days
70,500JPY (with tax 77,550JPY)
21270
VG50VPK
- - - 50 - 120 3 65 20 10 80 70 φ10 4 V70
stock
9 1-2 Business Days
When out of stock
30 Business Days
98,700JPY (with tax 108,570JPY)
21271
VG65VPK
- - - 65 - 145 3 65 15.5 10 95 85 φ12 4 V85
stock
1 1-2 Business Days
When out of stock
30 Business Days
100,200JPY (with tax 110,220JPY)
21272
VG80VPK
- - - 80 - 160 3 65 15.5 12 110 100 φ12 4 V100
stock
6 1-2 Business Days
When out of stock
30 Business Days
101,700JPY (with tax 111,870JPY)
21273
VG100VPK
- - - 100 - 185 6 91 17.5 12 130 120 φ12 8 V120
stock
7 1-2 Business Days
When out of stock
30 Business Days
158,400JPY (with tax 174,240JPY)
21274
VG125VPK
- - - 125 - 210 6 91 17.5 12 160 150 φ12 8 V150
stock
3 1-2 Business Days
When out of stock
30 Business Days
160,700JPY (with tax 176,770JPY)
21275
VG150VPK
- - - 150 - 235 8 136 17.4 12 185 175 φ12 8 V175
stock
2 1-2 Business Days
When out of stock
30 Business Days
230,400JPY (with tax 253,440JPY)
21276
VG200VPK
- - - 200 - 300 8 136 17.4 16 241 225 φ15 8 V225
stock
2 1-2 Business Days
When out of stock
30 Business Days
245,100JPY (with tax 269,610JPY)
21277
VG250VPK
- - - 250 - 350 8 136 17.4 16 291 275 φ15 12 V275
When out of stock
30 Business Days
270,000JPY (with tax 297,000JPY)
21278
VG300VPK
- - - 300 - 400 8 136 17.4 16 341 325 φ15 12 V325
When out of stock
30 Business Days
307,800JPY (with tax 338,580JPY)
22900
ISOK63VPK
- - - - 63 95 3.5 49 14 12 70 57.2 - - -
stock
2 1-2 Business Days
When out of stock
Answered later
57,100JPY (with tax 62,810JPY)
22901
ISOK80VPK
- - - - 80 110 3.5 49 14 12 83 69.9 - - -
stock
2 1-2 Business Days
When out of stock
Answered later
90,700JPY (with tax 99,770JPY)
22902
ISOK100VPK
- - - - 100 130 3.5 63 12 12 102.7 88.9 - - -
stock
2 1-2 Business Days
When out of stock
Answered later
97,100JPY (with tax 106,810JPY)
22903
ISOK160VPK
- - - - 160 180.1 6 90 18 12 153 139.7 - - -
stock
1 1-2 Business Days
waiting for completion
2 Arrival on Dec 25,2024
When out of stock
Answered later
141,100JPY (with tax 155,210JPY)
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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