About the product
The bathroom silicone that resists mold and glass cleaner
Pattex Silicon 5 Universal is a fast-curing acetic silicone for sealing bathrooms, shower trays, bathtubs, toilets, kitchens, and windows. It combines the two things that fail first in a bathroom joint: resistance to mold and resistance to common cleaning products. To this, it adds high UV resistance, which also makes it suitable for aluminum carpentry and exterior glazing.
UP TO +120 °C: it withstands higher temperatures than most sanitary silicones, so it can also be used on kitchen countertops and areas near heat sources.
Why choose Silicon 5 Universal
- ✓ Mold resistant: keeps the joint white longer in bathrooms and showers for daily use.
- ✓ Resistant to common cleaners: does not degrade with diluted bleach or common bathroom cleaners.
- ✓ Permanently flexible with low modulus (Shore A 23): accommodates the movement of the bathtub when filling and emptying.
- ✓ High UV resistance and outdoor use: suitable for exterior glazing and aluminum-glass carpentry.
- ✓ Fast curing: forms a skin in 10-15 minutes, so the joint is protected quickly.
- ✓ Two years of storage in original packaging, twice as long as most sealants.
Technical specifications
| Base | Silicone rubber, acetic cure |
| Density | Approx. 1 g/cm³ |
| Slump (ISO 7390) | Approx. 0 mm |
| Skin formation | 10-15 minutes |
| Curing time | 2-3 mm / 24 h (23 °C, 50 % R.H.) |
| Shore A hardness | Approx. 23 |
| Modulus at 100 % (ISO 8339-A) | Approx. 0.35 N/mm² |
| Temperature resistance | -30 °C to +120 °C |
| Application temperature | +5 °C to +35 °C |
| Storage | 2 years in original packaging, +5 °C to +25 °C |
| Presentation | 280 ml cartridge · white or clear |
On what materials it adheres
Metals: anodized aluminum.
Glass: monolithic glass and vitrified surfaces.
Construction: painted wood and ceramic surfaces (bathtubs, sinks, etc.).
Plastics: requires prior testing. Not suitable for PE, PP, or PTFE (Teflon®). Being an acetic silicone, it is also not recommended for marble, concrete, or unprotected metals: for these substrates, use a neutral silicone such as SL 650.
Where it is used
Sealing of bathtubs, shower trays, sinks, toilets, countertops, and windows. Also exterior glazing, glass-aluminum sanitary ware, and aluminum-glass carpentry.
How to apply
- Surfaces must be dry and free of dust, grease, and dirt. Unlike SP 101, this silicone does not allow wet application.
- Cut the nozzle to the bead size and apply with a standard manual or pneumatic gun.
- Smooth with soapy water before a film forms (you have 10-15 minutes).
- Clean tools with white spirit before it cures and cover the cartridge with plastic film.
Which Pattex silicone do you need?
Just a small bathroom touch-up? — Pattex Baño Sano, in 50g format without the need for a gun.
Is the old joint black but you don't want to remove it? — Pattex Re-New, applied on top.
Marble, concrete, or expansion joint? — SL 650, neutral silicone that does not attack the substrate.
Is the joint going to be painted? — SP 101, silicone-free and paintable.



















