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. NW / KF center ring nitrile
  1. Cosmotec for Vacuum Components
  2. Vacuum Component
  3. NW / KF standard
  4. Center ring / seal
  5. NW / KF center ring nitrile

NW / KF center ring nitrile

NW / KF center ring nitrile

▼NW/KF Center Ring
For NW/KF flange (metal piping)
One-touch connection with inner ring guide
With outer ring can be used for high pressure applications.

▼The following types are standardized (List)
Applicable flange (NW): 10, 16, 25, 40, 50
Guide material: SUS, Teflon, aluminum
O-ring material: Viton, Nitrile, Karlez®, FEP
O-ring (Viton® / Nitrile)
※For glass piping (here)

▼We also offer the following products
Blank type: Processable 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.

see next
Basic Information
Seal / gasket material Nitrile
Maximum temperature 100℃
The lowest temperature -50℃
RoHS2 corresponding ○
Inquiry for this subcategory

We have 5 type candidate

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

front.product.product_code
Model
 NW/KF A B The inner ring
Stock & Delivery
front.product.price
front.product.tax_included2
21241
NW16CRSN
16 17 16 SUS 304
stock
92 1-2 Business Days
When out of stock
30 Business Days
1,100JPY (with tax 1,210JPY)
20540
NW25CRSN
25 26 24 SUS 304
stock
30 1-2 Business Days
waiting for completion
150 Arrival on Jan 24,2025
When out of stock
30 Business Days
1,200JPY (with tax 1,320JPY)
21242
NW40CRSN
40 41 39 SUS 304
stock
110 1-2 Business Days
When out of stock
30 Business Days
1,500JPY (with tax 1,650JPY)
21243
NW50CRSN
50 52 50 SUS 304
stock
29 1-2 Business Days
When out of stock
30 Business Days
1,900JPY (with tax 2,090JPY)
30259
34.211.710
100 - - Aluminum
stock
21 1-2 Business Days
1,800JPY (with tax 1,980JPY)
NW/KF A B The inner ring
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Flange

The inner ring

NW/KF センターリング ニトリル admin.label.item.catalog_image
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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