About 10,000 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. Flexible Tube/Bellows/Exhaust Hose
  4. Bellows
  5. NW / KF formed bellows SUS

NW / KF formed bellows SUS

NW / KF formed bellows SUS

▼NW/KF formed bellows
NW/KF formed bellows are used for longitudinal dimensional adjustment and vibration absorption of piping.
It cannot be bent in the short direction.
Standard specification : Vacuum inside, atmosphere outside
Temperature: up to 250°C
Life time: 10,000 cycles
Flange size (NW): 16, 25, 40, 50

▼The following types are standardized (List)
Flange: Pipe end, ICF, NW/KF, JIS-VF, JIS-VG
Material: SUS, Teflon (NW only)
*Flexible tubes are here.

▼Others
Short and long flanges for welding (list), tees and crosses various types of piping are also available in various sizes.
We can also change lengths, fittings, and flange sizes. Please contact us by clicking the "Inquiry" button on the right side of the page.

For precision cleaning requests, click here.

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Basic Information
Flange material SUS 316
Flexible / bellows SUS 316L
life cycle 10000 cycle
RoHS2 corresponding ○
Inquiry for this subcategory

We have 4 type candidate

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

front.product.product_code
Model
 NW/KF A C D L Bellows plate thickness Operating range Spring constant (N / mm)
Stock & Delivery
front.product.price
front.product.tax_included2
20891
NW16FB105
16 30 33 22.5 105 0.15 96-111 4.8
stock
9 1-2 Business Days
When out of stock
30 Business Days
17,100JPY (with tax 18,810JPY)
20892
NW25FB105
25 40 33 22.5 105 0.15 96-111 4.8
stock
8 1-2 Business Days
waiting for completion
5 Arrival on Jul 25,2025
When out of stock
30 Business Days
19,100JPY (with tax 21,010JPY)
20893
NW40FB115
40 55 58 42.7 115 0.15 100-130 3.5
stock
13 1-2 Business Days
waiting for completion
10 Arrival on May 26,2025
When out of stock
30 Business Days
21,100JPY (with tax 23,210JPY)
20894
NW50FB125
50 75 65 49.5 125 0.15 110-140 3.6
stock
6 1-2 Business Days
When out of stock
30 Business Days
24,100JPY (with tax 26,510JPY)
NW/KF A C D L Bellows plate thickness Operating range Spring constant (N / mm)
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NW/KF 成形ベローズ SUS 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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