## Common ground
All options describe different materials used to construct a water closet (toilet).
## Options at a glance
**3922.90 – Plastic**
- **Defining trait:** Made primarily from synthetic polymers like polypropylene or ABS.
- **Typical examples:** Low-cost, lightweight toilets; portable or travel toilets.
- **Best fit when:** Durability and low weight are priorities; common in temporary or budget installations.
**4016.99 – Rubber**
- **Defining trait:** Constructed mainly from vulcanized rubber or elastomers.
- **Typical examples:** Rare; possibly seals or gaskets, not full toilets.
- **Best fit when:** Only if the product is a flexible, non-rigid toilet component (not a complete fixture).
**6910 – Ceramic**
- **Defining trait:** Made from fired clay or porcelain, typically glazed.
- **Typical examples:** Standard household toilets; commercial bathroom fixtures.
- **Best fit when:** High durability, hygiene, and traditional appearance are required.
**7017 – Glass**
- **Defining trait:** Constructed from transparent or translucent glass.
- **Typical examples:** Experimental or artistic toilets; luxury design pieces.
- **Best fit when:** Aesthetic appeal and transparency are key; not common for functional use.
**7324.90 – Iron/Steel**
- **Defining trait:** Made from ferrous metals, often with protective coatings.
- **Typical examples:** Industrial or heavy-duty toilets; military or outdoor use.
- **Best fit when:** Extreme strength and resistance to impact are needed.
**7418.20 – Copper**
- **Defining trait:** Constructed from copper, valued for corrosion resistance and antimicrobial properties.
- **Typical examples:** High-end or decorative toilets; niche architectural installations.
- **Best fit when:** Premium materials and hygiene features are prioritized.
**7615.20 – Aluminium**
- **Defining trait:** Made from lightweight, corrosion-resistant aluminum alloys.
- **Typical examples:** Portable or marine toilets; outdoor recreational use.
- **Best fit when:** Lightweight and rust-free performance is essential.
**7907.00 – Zinc**
- **Defining trait:** Made from zinc, often used in plating or casting.
- **Typical examples:** Very rare for full toilets; possibly fittings or decorative parts.
- **Best fit when:** Only if the product is a small component (e.g., valve) made of zinc.
## Key differences
| Material | Durability | Weight | Common Use | Hygiene & Aesthetics |
|--------------|------------|----------|------------------|------------------------|
| Plastic | Medium | Low | Budget, portable | Moderate |
| Rubber | Low | Very low | Seals only | Poor |
| Ceramic | High | Medium | Standard fixtures | Excellent |
| Glass | Low | Medium | Artistic | High (visual) |
| Iron/Steel | Very high | High | Industrial | Moderate |
| Copper | High | Medium | Luxury | Excellent |
| Aluminium | Medium | Very low | Portable, marine | Good |
| Zinc | Low | Medium | Components only | Poor |
## How to choose
- Is the toilet made of glazed clay or porcelain? → 6910
- Is it lightweight and used in portable or outdoor settings? → 3922.90 or 7615.20
- Is it a high-end, antimicrobial fixture? → 7418.20
- Is it transparent or artistic? → 7017
- Is it extremely heavy-duty or industrial? → 7324.90
## Overlaps & pitfalls
- **Plastic (3922.90)** and **aluminium (7615.20)** both suit portable toilets—choose based on weight vs. cost.
- **Ceramic (6910)** is the standard; most real-world water closets fall here.
- **Rubber, glass, zinc** are unlikely for full toilets—likely misclassified if claimed as main material.
- If multiple materials are used, prioritize the **main structural material**