1. Executive Summary: Instant, Tool-Free Sealing for Spigots & Ports
The SOSHH PU10 Transparent Snap-in Blanking Cap is an essential, high-performance sealing component engineered for modern bulk material handling systems. Designed as a 100% direct drop-in replacement for industry-standard grooved snap-in spigots, it provides an instant, dust-tight seal for unused pipework branches, clean-out ports, and inspection windows. Manufactured from FDA-compliant virgin polyether TPU, it guarantees zero visible leakage under rated conditions, ensuring total containment during processing or CIP (Clean-In-Place) washdowns.
2. Core Engineering Advantages (Operator-Friendly Design)
- Integrated Pull Tab: Unlike standard flat caps that are difficult to grip, our ergonomically designed pull tab allows operators to remove the cap in seconds, significantly reducing downtime during maintenance or washdowns.
- 100% Visual Monitoring: Manufactured from crystal-clear Ether-based TPU, the cap doubles as a highly durable sight glass, allowing operators to safely monitor product flow or blockages without opening the system.
- Zero-Tool Installation: The internal snap-action band perfectly locks into standard grooved spigots, eliminating the need for hose clamps, tools, or silicone sealants.
- Sanitary & Food Safe: Virgin polyether TPU complies with FDA 21 CFR 177.2600 (Report Ref. TQT4821B36E) and is formulated in accordance with EU 10/2011 and EC 1935/2004. This is a material-level compliance, supported by test report and Declaration of Compliance.
3. Technical Performance Matrix
| Technical Parameter | SOSHH® PU10 Specification Detail |
|---|
| Base Material | PU-10 (Virgin Polyether TPU / Transparent) |
| Optical Clarity | High Transparency (Sight-glass quality) |
| Wall Thickness | 1.0 mm (39 mil) |
| Elastomer Hardness | 90 Shore A |
| Operating Temp Range | −30°C to +85°C continuous (Peak +110°C; CIP up to 85°C) |
| Removal Mechanism | Central PU Pull-Tab (HF heat-welded, zero mechanical fasteners) |
| Sealing Profile | Internal snap-fit profile — 100% dust-tight when correctly seated |
| Food Contact (US) | Complies with FDA 21 CFR 177.2600 (Report Ref. TQT4821B36E) |
| Food Contact (EU) | Formulated per Regulation (EU) No 10/2011 & (EC) No 1935/2004 |
| Pressure Rating | Low-pressure dust sealing only (Not a pressure-rated blind plate) |
| Environmental | RoHS Compliant, BPA-Free, Halogen-Free |
| SPECIFICATION | TECHNICAL VALUE / DETAIL |
|---|
| Base Material | PU10 (virgin polyether TPU) |
| Optical Clarity | Transparent (sight-glass quality) |
| Wall Thickness | 1.0 mm |
| Elastomer Hardness | 90 Shore A |
| Operating Temp Range | −30 to +85 °C continuous (peak +110 °C; CIP up to 85 °C) |
| Removal Mechanism | Central PU Pull Tab (heat-welded, no mechanical fasteners) |
| Sealing Mechanism | Internal snap-fit — dust-tight when correctly seated |
| Food Contact (US) | Complies with FDA 21 CFR 177.2600 (Report Ref. TQT4821B36E) |
| Food Contact (EU) | Formulated in accordance with Regulation (EU) No 10/2011 and Regulation (EC) No 1935/2004 (DoC available) |
| Pressure | Not a pressure-rated blind plate; low-pressure sealing only |
| RoHS | Supplier declaration available |
4. Primary Industrial Applications
- Sealing unused inlet/outlet spigots on sifters, mixers, and hoppers.
- Acting as a quick-release inspection port cover (Sight Glass) on gravity chutes.
- Temporarily sealing pipework during clean-in-place (CIP) washdowns to prevent cross-contamination.
5. Standard & Custom Sizing Available
Standard Sizes — Ordered by Spigot OD (cuff seating diameter)
The blanking cap must match the spigot outer diameter (OD), not the pipe bore. The table below maps common nominal trade sizes to SOSHH actual cuff diameters.
. Need a specific size to retrofit your existing equipment? Contact our engineering team with your spigot diameter for a rapid quotation and global shipping options.
| NOMINAL SIZE (COMMON SEARCH) | ACTUAL SPIGOT OD (ORDER THIS) | INCH | HEIGHT 50 MM | HEIGHT 90 MM |
|---|
| 100 mm | 102 mm | 4" | — | ✓ |
| 150 mm | 152 mm | 6" | — | ✓ |
| 155 mm | 159 mm | 6¼" | ✓ | — |
| 200 mm | 204 mm | 8" | ✓ | ✓ |
| 215 mm | 219 mm | 8½" | ✓ | — |
| 250 mm | 254 mm | 10" | ✓ | ✓ |
| 269 mm | 273 mm | 10¾" | ✓ | — |
| 300 mm | 304 mm | 12" | ✓ | ✓ |
| 321 mm | 325 mm | 12¾" | ✓ | — |
| 350 mm | 354 mm | 14" | ✓ | ✓ |
| 373 mm | 377 mm | 15" | ✓ | — |
| 400 mm | 404 mm | 16" | ✓ | — |
| 450 mm | 454 mm | 18" | ✓ | — |
| 500 mm | 504 mm | 20" | ✓ | — |
| 550 mm | 554 mm | 22" | ✓ | — |
| 600 mm | 604 mm | 24" | ✓ | — |
| 650 mm | 654 mm | 26" | ✓ | — |
| 700 mm | 704 mm | 28" | ✓ | — |
| 750 mm | 754 mm | 30" | ✓ | — |
| 800 mm | 804 mm | 32" | ✓ | — |
Key mapping: 250 mm = Ø254 mm · 350 mm = Ø354 mm · 600 mm = Ø604 mm. The actual cuff diameter is the nominal size + 4 mm.
Custom Sizes: Non-standard diameters (below 100 mm or above 800 mm, and any intermediate value such as Ø540 mm), square-to-round profiles, eccentric and conical caps are produced tool-free from your spigot OD or drawing. Tolerances to ISO 2768-m. A watermarked 2D outline PDF is provided for approval before production.
Frequently Asked Questions
6. Frequently Asked Questions (Technical FAQ)
(Tip: We recommend implementing FAQ Schema markup on your website for this section to dominate Google's "People Also Ask" snippets).
Q: Do you manufacture a 250 mm snap-in blanking cap?A: Yes. Our Ø254 mm blanking cap perfectly matches a nominal 250 mm bore standard spigot. Before ordering, please confirm whether your "250 mm" refers to the sleeve bore, the spigot OD, or the nominal trade size.
Q: Do you manufacture a 350 mm or 600 mm blanking cap?A: Yes. Our Ø354 mm and Ø604 mm blanking caps match nominal 350 mm and 600 mm systems respectively. Large diameters are readily available from our standard production matrix without extra tooling fees.
Q: Are your blanking caps compatible with existing snap-in spigot systems?A: Yes, the SOSHH® PU10 Blanking Cap is engineered to the exact geometrical profile required to be a 100% drop-in replacement for standard industrial grooved snap-in spigots.
Q: Is the TPU blanking cap food-contact compliant and FDA approved?A: The FDA does not issue general "product certificates" for this type of industrial article. However, our virgin polyether TPU material is fully compliant with FDA 21 CFR 177.2600, supported by independent lab testing (Report Ref. TQT4821B36E). It also complies with EU 10/2011 and EC 1935/2004.
Q: Can this blanking cap withstand CIP (Clean-In-Place) washdowns?A: Yes. It is highly suited for standard washdowns and warm-water CIP (up to 85 °C). The transparent design allows operators to visually verify cleaning effectiveness. For aggressive daily caustic washes, please consult our engineering team.
Q: Is this blanking cap pressure-rated for explosion relief?A: No. It is designed strictly for dust containment, fluid sealing, and low-pressure environments. It is not a pressure-rated blind plate or an explosion-pressure relief panel.
Q: Can I get a 2D or 3D CAD drawing before ordering?A: Yes. A watermarked 2D outline PDF is provided for rapid dimensional verification upon inquiry. Full 3D CAD step files are available for engineers after signing a standard NNN (Non-Disclosure, Non-Use, Non-Circumvention) agreement.
