1. Construction & Custom Design
- Formed by hydroforming or deep-drawing thin-walled tubing into convolutions, producing a seamless, flexible bellows ideal for vacuum use :contentReference[oaicite:1]{index=1}.
- Available in single-ply (thin wall for maximum flexibility) or multi-ply (enhanced strength); optional bright annealed or polished finishes improve vacuum compatibility :contentReference[oaicite:2]{index=2}.
- Flangeless or with vacuum flanges (KF, ISO-K, CF) to match your piping system—flangeless format avoids unnecessary material and machining :contentReference[oaicite:3]{index=3}.
2. Fully Customizable Specifications
Please provide:
- Outer Diameter (OD) & Inner Diameter (ID)
- Free Length (unloaded)
- Compressed Length (fully compressed)
- Extended Length / Stroke (maximum extension)
- Ply Option (single or multi) & Surface Finish
- Flange Type (KF, ISO-K, CF) or flangeless
We’ll calculate convolution count, spring rate, tolerances and produce to exact spec.
3. Performance & Capabilities
- Provides moderate axial, lateral, and angular flexibility—stiffer than edge-welded bellows but well-suited for thermal expansion, misalignment, or vibration in vacuum systems :contentReference[oaicite:4]{index=4}.
- Offers hermetic, all-metal sealing without gaskets—excellent for vacuum pipelines, forelines, and cryogenic lines :contentReference[oaicite:5]{index=5}.
- Capable of high-cycle fatigue, wide temperature range (–196 °C to +450 °C), and vacuum leak rates down to 1×10⁻⁹ Pa·m³/s :contentReference[oaicite:6]{index=6}.
4. Material Options
- Stainless steels (304, 304L, 316L, 321): standard for vacuum and cryogenic service :contentReference[oaicite:7]{index=7}.
- Other alloys: brass, bronze, Monel, beryllium copper for magnetic or corrosion-sensitive environments :contentReference[oaicite:8]{index=8}.
- Available in single- or multi-ply designs, with options for bright anneal or mirror polishing to optimize vacuum cleanliness :contentReference[oaicite:9]{index=9}.
5. Designed for High-Volume Production
- Highly automated hydroforming processes deliver cost-effective batch manufacturing with consistent quality :contentReference[oaicite:10]{index=10}.
- Available both flanged and flangeless for flexible integration into your workflow :contentReference[oaicite:11]{index=11}.
- Efficient replenishment with fast lead times (often 3 days for standard sizes) :contentReference[oaicite:12]{index=12}.
Key Benefits
| Feature | Benefit |
|---|---|
| Hydroformed Construction | Seamless, flexible design with minimal material waste |
| Single/Multi-Ply Options | Choose between flexibility and strength |
| Vacuum-Stable Finishes | Bright annealing or polishing for clean environments |
| Custom Dimensions & Flange Options | Tailored to OD/ID, length, stroke, and flange needs |
| All-Metal Sealing | Leak-tight in vacuum, pressure, and cryogenic applications |
| Volume-Ready Production | Consistent quality, low per-unit cost, fast delivery |
How to Order
Please supply:
- OD / ID
- Free / Compressed / Extended lengths
- Ply Option & Finish
- Flange Type (KF, ISO-K, CF) or flangeless
We’ll respond with convolution count, spring rate, CAD layout, quote, and lead time.
Summary
Our hydroformed metal bellows for vacuum—available in single- or multi-ply, customizable dimensions, and vacuum-compatible finishes—are ideal for forelines, pipelines, cryogenic connectors, and vacuum chamber fittings. They offer a balance between flexibility, cost, and performance tailored to your vacuum system needs.