OTTO Primer 1225 universal primer thick for absorbent substrates 100 ml
€14.79
- One primer for mineral, absorbent and some metallic substrates
- Film-forming and thick-bodied for strongly absorbent surfaces
- On concrete with the brush, on metal and plastic with the cloth
- Flash-off from 30 minutes, onward processing for up to 3 hours
- 14 days right of withdrawal
- Expert advice: 02831 9167703 Mon–Thu 9–16, Fri 9–12 (CET)
- Specialist dealer in Kevelaer, Lower Rhine
Description
OTTO Primer 1225 is a viscous, film-forming universal primer based on a solvent-based adhesion promoter combination. It improves adhesion on mineral and absorbent materials, some metallic materials and some plastics. The 100 ml aluminium bottle is enough for individual joints and minor repairs.
Benefits at a glance
- Universal: one primer for mineral, absorbent and some metallic materials as well as some plastics.
- Film-forming: the thick-bodied primer forms a film on the substrate.
- Easy to plan: flash-off time at least 30 minutes, further processing up to 3 hours afterwards.
- Toluene-free: formulated without toluene according to the technical data sheet.
- System-tested: Compatibility with OTTO sealants and adhesives tested and approved by OTTO application technology.
Areas of application
- Porous, mineral substrates such as concrete
- Some metallic materials
- Some plastics
- Joint flanks before applying OTTO sealants and adhesives
Limits & notes
The primer must be applied thinly and evenly; excess primer forms a film that impairs adhesion. A soiled brush must never be dipped into the bottle. At 9 months, the storage stability is shorter than with many other OTTO primers. For other OTTO product groups, substrates or coatings, OTTO recommends preliminary tests. Do not apply the primer beyond the joint edges and bonding surfaces, otherwise soiling or visual changes are possible.
Hazard statements: Danger. H225 Highly flammable liquid and vapour. H319 Causes serious eye irritation. H336 May cause drowsiness or dizziness. H412 Harmful to aquatic life with long lasting effects. EUH066 Repeated exposure may cause skin dryness or cracking. EUH208 Contains dibutyltin dilaurate. May produce an allergic reaction. Safety data sheet available from the manufacturer.
Application & tips
Free the bonding surfaces of release agents, grease, oil, dust, water and old adhesives or sealants; clean non-porous substrates with OTTO Cleaner T and a clean, lint-free cloth, clean porous substrates of loose particles mechanically, for example with a steel brush or grinding disc. On porous substrates such as concrete apply the primer with a brush, on non-porous ones such as metal or plastic with a lint-free cloth, not with a brush. Allow to flash off for at least 30 minutes; higher temperatures shorten and lower temperatures lengthen the flash-off time. Solvent-containing, flammable: only with good ventilation, away from ignition sources; wear safety goggles and solvent-resistant gloves, according to the safety data sheet made of butyl rubber with a thickness of more than 0.4 mm. Because of the many influences on site, a trial application is always necessary. The use-by date is on the container, storage stability is 9 months at 23 °C.
Frequently asked questions
Brush or cloth?
On porous substrates such as concrete with a brush, on metals and plastics with a lint-free cloth.
How long does the primer have to flash off?
At least 30 minutes at 23 °C and 50 % relative humidity, at most 3 hours.
How long does the primer keep?
According to the data sheet 9 months at 23 °C; the use-by date is on the container.
Technical data
| Area of use: | Exterior, Interior |
|---|---|
| Base: | Solvent-based |
| Content: | 100 ml |
| Version | |
|---|---|
| Pack size: | 100 ml aluminium bottle |
| Technical data | |
| Density at 23 °C: | approx. 1,0 g/cm³ |
| Flash point: | −4 °C |
| Dangerous goods: | UN 1993, class 3, limited quantity (LQ) up to 1 l |
| Application | |
| Flash-off time at 23 °C / 50 % RH: | at least 30 minutes, at most 3 hours |
| Consumption: | approx. 100–200 g/m² depending on the absorbency of the substrate |
| Application: | Brush on porous substrates, lint-free cloth on non-porous ones |
| Use | |
| Substrates: | mineral and absorbent materials, some metals, some plastics |
| System partners: | OTTO sealants and adhesives |
| What's included | |
| Supplied as: | 100 ml or 1000 ml aluminium bottle |
| Storage stability: | 9 months at 23 °C / 50 % RH |
Data sheets
Data sheets and documents
All documents come unchanged from the manufacturer.
Manufacturer information
Manufacturer information pursuant to Art. 19 EU GPSR
Postal address
Hermann Otto GmbH
Krankenhausstr. 14
83413 Fridolfing
Germany
Electronic address info@otto-chemie.de
Information as of: 2026-09-17
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