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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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. Vacuum Component
  3. Gasket / Center ring / O-ring
  4. Center ring (NW / KF standard)
  5. With inner guide (NW / KF standard)
  6. 34.250032.211.325 Seal NW250 SUS316L / Viton ®

34.250032.211.325 Seal NW250 SUS316L / Viton ®

34.250032.211.325 Seal NW250 SUS316L/バイトン®

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34.250032.211.325 Seal NW250 SUS316L/バイトン®
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Product code :30331 Model:34.211.325

▼NW/KF Center Ring
Center ring for vacuum (10-⁷Pa level)
For NW/KF flange (metal piping)
One-touch connection with inner ring guide
With outer ring can be used for high pressure applications
Viton® O-rings can be used up to 200°C
Calrez® for high temperature applications can be used up to 315°C
Inner ring material is aluminum or stainless steel (SUS316L)
Inner ring also serves to prevent excessive clamping torque

▼The following types are standardized (list)
Applicable flanges (NW): 16, 25, 40, 50, 63, 80, 100, 125, 160, 200, 250
Guide material: SUS, Teflon, aluminum
O-ring material: Viton, Karlez®, FEP
O-ring (Viton®)
※For glass piping (here)
※For JIS-VF/VG flange here.
※For ISO flanges, here.

▼We also have the following products
Blank type: Machinable type without a hole in the center
Aluminum edge seal: Ultra high vacuum even with NW flange ( 10-⁹Pa range) even with NW flanges (one-time use only, use clamp for metal seal)
Center Ring with Mesh: Mesh to prevent contamination
Conversion center ring: Converts between NW10 and NW16 without inserting nipples, etc.

▼Options
We can also provide drilling (orifice machining, etc.) and other options for blank types. Please contact us from the "Inquiry" button on the right side of the page.

For precision cleaning requests, click here.

Basic Information
The inner ring SUS 316L
Seal / gasket material Viton ®
Maximum temperature 200℃
The lowest temperature -20℃
Available pressure Atmospheric pressure ~ 10
Leak rate <1.3x10-7Pa･㎥/sec
Non-magnetic ○
chemical resistance ○
Clean Room ○
RoHS2 corresponding ○
Pressurization △
Inquiry for this product
RoHS2 Download
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Model
 NW/KF B C K C1 J
Stock & Delivery
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30331
34.211.325
250 - 261 - 259 275
34.250032.211.325 Seal NW250 SUS316L/バイトン® admin.label.item.size_image
NW/KF B C K C1 J
250 - 261 - 259 275
Seal NW250 SUS316L / Viton®
Product code :30331    Model:34.211.325
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34.250032.211.325 Seal NW250 SUS316L/バイトン® admin.label.item.catalog_image
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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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