What is Seajet 117 Multipurpose Epoxy Primer Set a+b and why choose it
Seajet 117 Multipurpose Epoxy Primer Set a+b is a two-component, high performance epoxy primer designed to protect GRP, wood, steel, aluminium and alloy boat hulls. When applied in multiple roller coats, it provides durable protection against osmosis and forms an ideal base for Seajet antifouling systems and two-component topcoats. Its broad substrate compatibility and robust film make it suitable for both underwater and above-water areas of the hull.
Main features
- Two-component epoxy system: base and hardener designed for durable, long-lasting protection.
- Osmosis protection for GRP: 4–5 roller coats protect GRP hulls against osmosis.
- Versatile substrate compatibility: suitable for GRP, wood, steel, aluminium and their alloys.
- Direct overcoating: can be overcoated with all Seajet antifoulings and two-component topcoats.
- Colour options: silver grey (recommended underwater) and off white (recommended above water).
- Flexible application methods: can be applied by airless spray, brush or roller.
- Controlled film build: recommended 100 µm wet and 45 µm dry film thickness per coat.
- Good coverage: theoretical spreading rate of 10.0 m²/l at 45 µm dry film thickness (roller application basis).
Technical specifications
Product data
- Type: Two pack epoxy primer (base + hardener).
- Colour: Silver grey (preferable underwater) and off white (preferable above water).
- Flash point: 32°C.
- Volume solids: 45% ±2.
- VOC (theoretical): 443 g/l.
- Pack sizes: 1 l, 2.5 l, 5 l, 20 l set.
- Mixing ratio (by volume): Base 67 : Hardener 33.
- Mixing ratio (by weight): Base 73 : Hardener 27.
Application details
- Thinner: SEAJET THINNER E.
- Application methods: Airless spray, brush, roller.
- Ambient temperature during application: min. 5°C – max. 35°C.
- Maximum relative humidity: 85% R.H.
- Product temperature: min. 5°C – max. 35°C.
- Substrate temperature: min. 7°C – max. 35°C.
- Recommended film thickness per coat: 100 µm wet / 45 µm dry.
- Spreading rate: 10.0 m²/l (theoretical).
- Thinning: 0–5% by volume with SEAJET THINNER E.
- Airless spray nozzle tips: Graco 719, 619, 617, 519.
- Paint output pressure (airless): 15.0–18.0 MPa.
- Substrates: GRP, wood, steel, aluminium and alloys.
- Subsequent coating: all SEAJET antifouling products.
Drying and overcoating data (at 50 µm DFT)
| Temperature | Surface dry | Hard dry | Overcoating interval min. | Overcoating interval max. | Induction time | Pot life |
|---|
| 5°C | 1 hour | 12.5 hours | 10 hours | None | - | 24 hours |
| 10°C | 30 min | 8 hours | 5 hours | None | 18 hours | 18 hours |
| 20°C | 25 min | 5 hours | 2 hours | None | - | 10 hours |
| 30°C | 20 min | 1.5 hours | 1 hour | None | - | 8 hours |
* Mentioned maximum overcoat interval is for SEAJET antifouling. Maximum overcoat interval of SEAJET 117 with itself is free. Drying times and overcoating intervals will increase with increasing film thickness applied.
Storage, shelf life and disposal
- Storage conditions: store in a dry, cool and well ventilated space away from direct sunlight. Containers must be kept firmly closed. Handle with care.
- Shelf life: minimum 3 years at 20°C.
- Disposal: do not empty into drains. Dispose of this material and its container at a hazardous or special waste collection point.
Applications and typical use cases
- GRP (fibreglass) hulls: after correct surface preparation, apply 2–3 coats to reach a minimum of 150 µm dry film thickness. For osmosis protection, apply 4–5 coats.
- Aluminium and alloy hulls: apply 3–4 coats to achieve a minimum of 200 µm dry film thickness.
- Steel hulls and metal keels: after blasting to SA 2½ or mechanical abrasion of bare areas, apply 4–5 coats to reach a minimum of 250 µm dry film thickness.
- Underwater areas: silver grey version recommended as the base for Seajet antifouling systems.
- Above-water areas: off white version recommended as a first coat under compatible two-component topcoats.
Surface preparation overview
- General cleaning: degrease and clean with SEAJET THINNER E wipes to remove all contamination.
- Bare GRP: abrade with P80 abrasive paper, then clean. Apply 2–3 coats (150 µm DFT minimum); for osmosis protection, 4–5 coats.
- Bare aluminium and alloys: abrade with P80 abrasive paper, then clean. Apply 3–4 coats to reach 200 µm DFT minimum.
- Steel hulls and metal keels: sand blast to SA 2½ or mechanically abrade bare areas. Apply 4–5 coats to achieve 250 µm DFT minimum.
FAQ – Seajet 117 Multipurpose Epoxy Primer Set a+b
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1. On which substrates can Seajet 117 Multipurpose Epoxy Primer be used?
It is suitable for GRP, wood, steel, aluminium and alloys.
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2. How many coats are recommended for GRP osmosis protection?
For osmosis protection on GRP, apply 4–5 roller coats after correct surface preparation.
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3. What is the theoretical coverage per litre?
The theoretical spreading rate is 10.0 m²/l at 45 µm dry film thickness (values based on roller application).
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4. What are the recommended application conditions?
Apply between 5°C and 35°C ambient and product temperature, with substrate temperature between 7°C and 35°C and maximum relative humidity of 85%.
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5. Can Seajet 117 be overcoated with antifouling?
Yes. All Seajet antifoulings can be used as subsequent coatings over Seajet 117.
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6. What thinner should be used and how much can be added?
Use SEAJET THINNER E. Thinning is 0–5% by volume.
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7. What is the pot life of the mixed product?
Pot life is 24 hours at 5°C, 18 hours at 10°C, 10 hours at 20°C and 8 hours at 30°C.
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8. What is the minimum overcoating interval at 20°C?
At 20°C and 50 µm DFT, the minimum overcoating interval is 2 hours. There is no maximum overcoating interval for Seajet 117 over itself.
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9. What is the shelf life of Seajet 117 Multipurpose Epoxy Primer?
The minimum shelf life is 3 years at 20°C when stored correctly in unopened containers.
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10. How should the surface be prepared before application?
Degrease and clean with SEAJET THINNER E, abrade the substrate as specified for GRP, aluminium/alloys or steel, then clean again before applying the recommended number of coats.
Section 14 – Transport information
The product should stay in a securely closed container during transport.
Section 8 – Personal protective measures
Minimum safety precautions when handling Seajet 117 Multipurpose Epoxy Primer are:
- Observe the precautionary notices displayed on the container.
- Provide adequate ventilation.
- Avoid skin contact and inhalation of spray mist and vapours.
- If the product comes into contact with the skin, wash thoroughly with lukewarm water and soap or suitable cleaner. If the eyes are contaminated, irrigate with water and seek medical advice immediately.
- Since the product contains flammable materials, keep away from sparks and open flames. No smoking should be permitted in the area.
Personal protection advice and additional safety information can be obtained from the product Safety Data Sheet.
*Contenido generado por IA
