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USA Lab KF25 Ball Valve
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USA Lab KF25 to PTFE Adapter
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USA LAB KF25 90 Degrees
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KF25 Pressure Release Valve Stainless Steel
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Description
USA Lab KF25 Bellows Hose – Rated for Full Vacuum | USA Lab
The USA Lab KF25 Bellows Hose is engineered for maximum flexibility and reliability in high-vacuum service. Precision-formed stainless-steel convolutions provide superior vibration isolation, misalignment tolerance, and durability under extreme vacuum conditions.
Each hose is helium leak-tested and designed for full vacuum performance—ideal for connecting vacuum pumps, traps, and chambers where clean, contamination-free operation matters.
Standard KF25 (NW25) quick-clamp flanges enable fast installation with centering rings and clamps, streamlining maintenance without tools.
Built for labs, pilot plants, and semiconductor/analytical environments that demand dependable foreline plumbing.
Full Vacuum Rated KF25 / NW25 304 SS
Full Vacuum: Performance suitable to 10−6 Torr when properly integrated.
Fast Assembly: KF25 quick-clamp connection with centering ring for tool-free changes.
Flexible & Robust: Corrugated stainless bellows absorb vibration and route tight bends.
Why buy from USA Lab
Expert Support
Engineers & technicians on staff.
Engineers & technicians on staff.
Quality First
Tested and trusted products.
Tested and trusted products.
Fast Fulfillment
Nationwide 1-2 day shipping.
Nationwide 1-2 day shipping.
Warranty & Parts
US-based service & spares.
US-based service & spares.
Resources & Downloads
Why this KF25 Bellows Hose?
- Ultimate vacuum rating — engineered for deep-vac service to 10−6 Torr (system-dependent).
- Flexible & durable — stainless convolutions resist fatigue and allow tight routing without collapse.
- Clean operation — smooth internal surfaces minimize outgassing and particle shed.
- KF25 simplicity — quick-clamp assembly with standard centering rings for fast changeovers.
- Helium leak-tested — quality-checked for reliable, contamination-free connections.
Talk to an expert
Get help selecting length, material (304 vs 316L), and ring/clamp options for your setup.
Technical Specifications
| Model | USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum |
|---|---|
| Connection Size | KF25 (NW25) quick-clamp |
| Standard | ISO-KF |
| Material | 304 Stainless Steel (optional 316L available) |
| Pressure / Vacuum | Full vacuum capability < 1 micron; suitable to ~10−6 Torr (system-dependent) |
| Temperature Range | −40 °C to +200 °C |
| Lengths Available | 250 mm – 2000 mm |
| Typical Applications | Foreline plumbing, vacuum pumps, traps, chambers; analytical & semiconductor processes; research labs |
| Cleanliness | Cleanroom-compatible design; low outgassing |
| Assembly | Use with KF25 centering ring and clamp (sold separately) |
Popular Industries & Use Cases
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Custom Solutions
Tailored tanks, skids, and integration help.
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We’ll help spec the right system for your throughput.
FAQ
What does KF25 / NW25 mean on the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum?
KF25 (also called NW25) is the ISO-KF quick-flange size used on the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum, allowing tool-free assembly with a centering ring and clamp.
Is the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum compatible with my existing KF hardware?
Yes. The USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum follows ISO-KF standards and works with standard KF25 clamps and centering rings.
What vacuum level can the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum handle?
When properly integrated, the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum supports deep-vac environments to approximately 10−6 Torr (system-dependent).
What temperatures can the USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum withstand?
The USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum is suitable from −40 °C to +200 °C.
Important Shipping Notice for USA Lab KF25 Bellows Hose – Rated for Ultimate Vacuum
DISCLAIMER:
All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.
Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.
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