Unique-Bargains
Unique-Bargains Fluorine Rubber O-Rings 18mm OD 12mm ID 3mm Pack of 20
A pack of twenty fluorine-rubber O-rings sized 18 mm outer diameter, 12 mm inner diameter and 3 mm cross-section, rated to 70 A durometer and a temperature range of -30 °C to 280 °C for sealing
- MaterialFluorine Rubber
- Resists heat and chemicals with FKM material rated from -30 °C to 280 °C
- 70A durometer hardness withstands pressure up to .3 bar without deformation
- Fits 12 mm ID and 18 mm OD grooves with 3 mm cross-section for standard metric sealing
- Pack of 20 rings covers multiple repair jobs on pumps, hoses and plumbing
- Compatible with mineral oils, fuels, hydraulic fluids and many organic solvents
Fluorine Rubber O-Rings 18mm OD
These fluorine rubber O-rings have an outer diameter of 18mm, inner diameter of 12mm and a 3mm cross-section. The material resists aging, heat, fuel and chemicals across a temperature range from -30°C to 280°C. A 70A durometer rating provides resistance to penetration. The pack contains 20 metric FKM sealing gaskets for plumbing, machinery, hydraulic and pneumatic repairs.
Suits maintenance tasks needing chemical
These rings suit pressure washers, filters, pumps, water hoses and plumbing pipes where mineral oils, greases, hydrocarbons and hydraulic fluids are present. They are not for buyers who need a different diameter, cross-section or durometer. They are not for applications requiring a working pressure above 0.3 bar. They are not for buyers who need a larger quantity than 20 pieces.
Critical size check: 18mm OD, 12mm ID, 3mm CS
The single specification that decides fit is the 18mm outer diameter, 12mm inner diameter and 3mm cross-section diameter. Confirm these exact dimensions against the groove or port before purchase. The 70A hardness and FKM material define the pressure and temperature limits.
Highlights
- Resists heat and chemicals with FKM material rated from -30 °C to 280 °C
- 70A durometer hardness withstands pressure up to .3 bar without deformation
- Fits 12 mm ID and 18 mm OD grooves with 3 mm cross-section for standard metric sealing
- Pack of 20 rings covers multiple repair jobs on pumps, hoses and plumbing
- Compatible with mineral oils, fuels, hydraulic fluids and many organic solvents
Specifications
| Material | Fluorine Rubber |
|---|---|
| Brand | Unique Bargains |
Questions about this item
What does the 70A durometer mean once the O-ring is installed in a real machine?
The 70A Shore hardness resists penetration so the 3 mm cross-section holds its shape under compression without extruding into the clearance gap.
What does the 0.3 bar working pressure cap in practice?
It limits the seal to low-pressure duties such as plumbing, water hoses, pumps or filter housings rather than high-pressure hydraulic systems.
What groove dimensions does the 18 mm outer diameter and 12 mm inner diameter require?
The housing bore must be 18 mm and the gland 12 mm so the 3 mm cross-section sits correctly and compresses to seal.
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