Entity-Dense Summary: The PU-10-VR is a vacuum-reinforced snap-in flexible connector sleeve built from a 1.0 mm transparent polyether TPU wall with non-metallic, high-elasticity polymer rings housed in HF-welded exterior pockets. This ring-and-pocket architecture prevents sleeve collapse under full vacuum down to −1000 mbar (−14.5 psi), while sustaining positive pressure up to +1.0 bar (+14.5 psi) — without putting any metal in the product path. Because the reinforcement is non-metallic and sits outside the bore, the PU-10-VR passes metal detectors and is FDA 21 CFR 177.2600-compliant (Report TQT4821B36E). It installs tool-free in under 30 seconds per end and is fabricated in Ø102–804 mm × 100–1000 mm.
SOSHH PU-10-VR vacuum-rated clear sleeve holds the bore open to −1000 mbar with non-metallic POM anti-collapse rings in external pockets — zero metal in the product zone, so inline metal detectors and X-ray units do not false-reject. Ether-TPU, Shore A 90, 40 MPa, FDA 21 CFR 177.2600, Ø102–804 mm.
1. What the PU-10-VR Solves
Standard flexible sleeves collapse when a conveying line pulls vacuum. Operators compensate by adding metal support rings or helical wires — but those introduce metal into the product path, trigger metal-detector rejects, and create crevices that trap powder during CIP. The PU-10-VR eliminates these compromises:
| Vacuum Challenge | PU-10-VR Engineering Solution |
|---|
| Sleeve walls suck inward and choke flow under vacuum | Non-metallic polymer rings hold the bore open down to −1000 mbar full vacuum |
| Metal support rings in the product path → rejects | Rings are non-metallic and seated in HF-welded exterior pockets — 100% metal-free bore |
| Wire-reinforced sleeves flex → wire fatigue & puncture | Polymer rings are high-elasticity: no metal fatigue, zero puncture risk |
| Crevices trap powder and slow CIP drainage | Zero-crevice bore, flush, smooth, and free-draining |
| PARAMETER | POM RING (METAL-DETECTOR) | 304 WIRE COIL (STANDARD VACUUM) |
|---|
| Working vacuum | −1000 mbar | −1000 mbar |
| Positive pressure | +1.0 bar | +1.0 bar |
| Reinforcement | Non-metallic POM ring, external pocket | 304 stainless coil |
| Product-zone metal | None | 304 wire present |
| Detector compatibility | X-ray / metal-detector transparent | Not for detector lines |
| Material | Ether-TPU, Shore A 90, 40 MPa | Ether-TPU, Shore A 90 |
| Surface resistance | 10⁶–10⁹ Ω/sq (option) | — |
| Size range | Ø102–804 mm | Ø102–804 mm |
| Compliance | FDA 21 CFR 177.2600 | FDA 21 CFR 177.2600 |
2. Locked Engineering Specifications
| Property | SSOT Verified Value | Standard / Engineering Note |
|---|
| Base Material | 100% Virgin Polyether TPU | Ether-based, microbe & hydrolysis resistant |
| Reinforcement | Non-Metallic Polymer Rings | Housed in exterior HF-welded pockets |
| Wall Thickness | 1.0 mm | High flex-fatigue endurance |
| Color | Clear / Transparent | Full visual inspection of material flow |
| Hardness | Shore A 90 (TPU substrate) | Structural integrity under continuous suction |
| Tensile Strength | 40 MPa (TPU substrate) | Absorbs rapid positive pressure spikes |
| Elongation at Break | 600% (TPU substrate) | Accommodates vibratory offset without tearing |
| DIN Abrasion Loss | 39.0 mg | ≈10× rubber wear resistance |
| Continuous Temp | −20 °C to +110 °C | TPU substrate rating |
| Positive Pressure | +1.0 bar (+14.5 psi) | Heavy-duty positive pressure containment |
| Vacuum Rating | −1000 mbar (−14.5 psi) | Full vacuum rated; zero sleeve collapse |
| Surface Resistivity | > 10¹² Ω (Standard) | < 10⁹ Ω anti-static version available (PU-10-AS) |
| Metal Detection | Metal Detector Transparent | Non-metallic reinforcement, 100% metal-free bore |
| Food Compliance | FDA 21 CFR 177.2600 | Migration verified (Report: TQT4821B36E) |
| EU Food Contact | EC 1935/2004 & EU 10/2011 | Fully compliant, 100% phthalate-free |
3. Standard Part Number System & Sizing Matrix
Specify your vacuum-reinforced connector using our standardized naming code:
PU10VR - [Diameter ØD] - [Length CL]
- PU10VR: 1.0 mm clear polyether TPU with external non-metallic polymer rings
- ØD: Seating diameter in mm (20 standard sizes)
- CL: Installed face-to-face length in mm (100 to 1000 mm, 50 mm increments)
Example: PU10VR-204-400 specifies a Ø204 mm diameter connector, 400 mm length, with full vacuum reinforcement rings.
4-Step Selection Checklist for Vacuum & Metal-Detector Lines
- State the actual vacuum in kPa or mbar. Plain TPU collapses around −20 to −30 kPa; above that, specify ring/coil reinforcement.
- Confirm detector/X-ray position. Sleeve upstream of detection → POM ring only. No detection downstream → 304 coil is acceptable.
- Never accept a steel spring “in the product zone.” Even a “stainless” spring fatigues, sheds metal, and can be drawn downstream.
- Send the installed gap and both port ODs. Ring pitch is engineered from diameter and wall thickness, not guessed.
20 Standard Diameters Quick Reference Table
| SN | Diameter ØD (mm) | DN Equivalent | Standard Length Range (CL) | Reference Part Number (CL 300) |
|---|
| 1 | Ø102 | DN100 (4 in) | 100–1000 mm | PU10VR-102-300 |
| 2 | Ø152 | DN150 (6 in) | 100–1000 mm | PU10VR-152-300 |
| 3 | Ø159 | DN160 (6¼ in) | 100–1000 mm | PU10VR-159-300 |
| 4 | Ø204 | DN200 (8 in) | 100–1000 mm | PU10VR-204-300 |
| 5 | Ø219 | DN220 (8⅝ in) | 100–1000 mm | PU10VR-219-300 |
| 6 | Ø254 | DN250 (10 in) | 100–1000 mm | PU10VR-254-300 |
| 7 | Ø273 | DN275 (10¾ in) | 100–1000 mm | PU10VR-273-300 |
| 8 | Ø304 | DN300 (12 in) | 100–1000 mm | PU10VR-304-300 |
| 9 | Ø325 | DN325 (12¾ in) | 100–1000 mm | PU10VR-325-300 |
| 10 | Ø354 | DN350 (14 in) | 100–1000 mm | PU10VR-354-300 |
| 11 | Ø377 | DN375 (15 in) | 100–1000 mm | PU10VR-377-300 |
| 12 | Ø404 | DN400 (16 in) | 100–1000 mm | PU10VR-404-300 |
| 13 | Ø454 | DN450 (18 in) | 100–1000 mm | PU10VR-454-300 |
| 14 | Ø504 | DN500 (20 in) | 100–1000 mm | PU10VR-504-300 |
| 15 | Ø554 | DN550 (22 in) | 100–1000 mm | PU10VR-554-300 |
| 16 | Ø604 | DN600 (24 in) | 100–1000 mm | PU10VR-604-300 |
| 17 | Ø654 | DN650 (26 in) | 100–1000 mm | PU10VR-654-300 |
| 18 | Ø704 | DN700 (28 in) | 100–1000 mm | PU10VR-704-300 |
| 19 | Ø754 | DN750 (30 in) | 100–1000 mm | PU10VR-754-300 |
| 20 | Ø804 | DN800 (32 in) | 100–1000 mm | PU10VR-804-300 |
19 Standard Length Increments (CL)
100 · 150 · 200 · 250 · 300 · 350 · 400 · 450 · 500 · 550 · 600 · 650 · 700 · 750 · 800 · 850 · 900 · 950 · 1000 mm
Standard Part-Number Generation Examples
| Seating ØD | Representative Part Numbers Across 19 Standard Lengths |
|---|
| Ø102 mm | PU10VR-102-100 · PU10VR-102-200 · PU10VR-102-300 · PU10VR-102-500 · PU10VR-102-1000 |
| Ø204 mm | PU10VR-204-100 · PU10VR-204-200 · PU10VR-204-300 · PU10VR-204-500 · PU10VR-204-1000 |
| Ø254 mm | PU10VR-254-100 · PU10VR-254-200 · PU10VR-254-300 · PU10VR-254-500 · PU10VR-254-1000 |
| Ø304 mm | PU10VR-304-100 · PU10VR-304-200 · PU10VR-304-300 · PU10VR-304-500 · PU10VR-304-1000 |
| Ø804 mm | PU10VR-804-100 · PU10VR-804-200 · PU10VR-804-300 · PU10VR-804-500 · PU10VR-804-1000 |
(20 Standard Diameters × 19 Lengths = 380 standard combinations. Custom lengths and non-standard geometries are fabricated to the exact millimeter with zero tooling fees. For the complete 380-cell crossover grid, visit our Standard Size Database. For matching docking spigots, view our Weld-on Steel Joints Specs.)
5. Frequently Asked Questions (FAQ)
Q1: Can PU-10-VR withstand full vacuum?
Yes. The non-metallic polymer rings, housed in HF-welded exterior pockets, hold the sleeve bore open down to −1000 mbar (−14.5 psi) full vacuum without wall collapse or material restriction.
Q2: Is PU-10-VR metal-free for metal detection stations?
Yes. The reinforcement rings are engineered high-elasticity polymers. The contact bore is 100% metal-free and passes metal detectors without trigger alarms or false rejects.
Q3: What is the maximum positive pressure rating?
PU-10-VR is rated to +1.0 bar (+14.5 psi) for standard sizes, handling both deep vacuum intake and positive pressure conveying cycles.
Q4: Is it certified for sanitary food processing?
Yes. It is manufactured from 100% virgin polyether TPU compliant with US FDA 21 CFR 177.2600 (Report TQT4821B36E), is 100% phthalate-free, and meets EU 10/2011 regulations.
Q5: How is PU-10-VR different from standard PU-10?
Standard PU-10 is rated to −50 mbar vacuum; PU-10-VR integrates exterior polymer rings to reach −1000 mbar full vacuum and +1.0 bar pressure while preserving visual clarity and sanitary washability.
Q6: Will the POM ring trip my metal detector?
No. It is non-metallic and sits outside the product-contact bore in an external pocket. The bore contains no embedded steel. Verify the full assembly — spigots, clamps, downstream equipment — with your detector supplier.
Q7: How much vacuum before collapse?
Plain ether-TPU collapses around −20 to −30 kPa. The PU-10-VR holds the bore open to −1000 mbar. Send your actual vacuum level and we engineer ring pitch accordingly.
Q8: Can I get it in antistatic?
Yes. A static-dissipative grade (10⁶–10⁹ Ω/sq, permanent molecular-level, not a wash-off spray) is available for explosive-dust lines. Reports provided with the quote.
6. Request a 2D Drawing & Fast Quotation
Submit your operating parameters to our engineering desk for 24-hour verification and a watermarked 2D drawing:
- [ ] Spigot Seating OD: Rigid channel outer diameter (mm)
- [ ] Installation Gap (IG): Static face-to-face distance (mm)
- [ ] Working Vacuum / Pressure: Operating level (mbar / bar)
- [ ] Process Material: Powder, granule, or bulk media
- [ ] Temperature: Continuous process and CIP washdown temp (°C)
Get a working solution, not a catalogue part.
Every SOSHH powder connector is engineered to your spigot, gap, media and pressure — never forced from a standard size chart. Send us the basics and we return a spec-matched proposal with material and test reports, usually within 24 hours.
How to get your solution in 3 steps:
- Tell us the duty — port OD/ID (top & bottom), installed gap height, powder media, temperature, pressure/vacuum, and whether you need antistatic or food-grade.
- Send a photo or drawing — a picture of the existing connector, the spigot groove, or a 2D sketch is enough. For flanges, add the bolt-hole count and PCD.
- Get your proposal — we confirm material, structure and tolerance, then return a quotation, lead time and compliance documents.
Email your photos or drawings to: AMIN@SOSHH.COM or attach them through the enquiry form below — a SOSHH application engineer will reply with a fit-for-purpose solution, not a price-only quote.
