Description
Penetrene Bulk is a petroleum-distillate based protectant, lubricant and rust penetrator, supplied in a 5 litre bulk pack for workshops and trades going through enough product that single small cans aren’t practical. As a red oil with a characteristic petroleum odour, it works the way most penetrating oils do — creeping into threads and seized joints to free them, then leaving a residual film that slows further corrosion.
Being classified as a combustible liquid with a 70°C closed-cup flash point means it needs the same storage discipline as other petroleum-based workshop products: away from heat, sparks and open flames, and kept cool and ventilated. It’s not classified as a Dangerous Good for road or rail transport under the ADG Code, but it is still a hazardous product under GHS and should be handled with that in mind.
Technical Specifications
| Recommended use | Protectant, lubricant and rust penetrator |
|---|---|
| Appearance | Red oil |
| Odour | Petroleum |
| Flash point | 70°C closed cup |
| Boiling point | 193°C |
| GHS classification | Combustible Liquid Category 4, Aspiration Hazard Category 1, Skin Irritant Category 3 |
| Packaging | 5 litre bulk pack (also available in other sizes) |
Where to Use
- Freeing seized nuts, bolts, fittings and mechanical joints
- General metal protection against corrosion
- Workshop and trade environments needing bulk-pack quantities
How to Apply
- Ventilate the work area — use in a well-ventilated space and avoid breathing vapours or spray mist.
- Apply to the target fitting — apply directly to the seized or corroding joint.
- Allow it to penetrate — give the oil time to work into the thread or joint before attempting to move it.
- Store correctly after use — reseal and store away from heat sources and out of direct sunlight.
Important Notes
- May be fatal if swallowed and enters the airway (aspiration hazard) — do not induce vomiting if swallowed; seek immediate medical attention.
- Combustible liquid — keep away from heat, hot surfaces, sparks, open flames and other ignition sources.
- Repeated skin exposure may cause dryness or cracking; wear appropriate PPE.
- In case of fire, use foam, water spray, dry chemical powder, carbon dioxide, sand or earth for small fires.
Buying Penetrene as a 5 litre bulk pack rather than individual small aerosol or trigger-spray cans is mainly a cost and workflow decision for a busy workshop: refilling a smaller reusable oiler or spray bottle from a bulk container works out cheaper per application and cuts down on packaging waste compared with buying single-use cans repeatedly. The trade-off is that bulk handling puts more of the safety burden on correct storage and dispensing practice, since a 5 litre container holds far more combustible liquid on site at once than a small aerosol would.








