Fluorocarbon Rubber
Fluorocarbon Rubber, FKM, is a very high cost synthetic rubber used when greater resistance to heat, chemicals, oils and solvents is needed. It is generally resistant to all aliphatic, aromatic and halogenated hydrocarbons, acids, animal and vegetable oils. It is generally attacked by keytones, low molecular weight esters and nitro containing compounds. It is used in o-rings, seals, gaskets, diaphragms, pump impellers, tubing, and high-vacuum and radiation equipment.
Properties and Characteristics
- Specific Gravity: 1.85
- Tensile Strength, psi – Reinforced: 2500
- Practical Shore A Hardness Range: 60–95
- Resilience, Room Temperature: Poor
- Resilience, Hot: Fair
- Tear Resistance: Good
- Abrasion Resistance: Good
- Atmosphere Aging Resistance: Excellent
- Oxidation Resistance: Excellent
- Heat Resistance: Excellent
- Low Temperature Flexability: Fair
- Compression Set: Fair – Good
- Permeability: Good – Excellent
- Flame Resistance: Excellent
- Acid Resistance – Dilute: Excellent
- Acid Resistance – Concentrated: Excellent
- Moisture Resistance: Good
- Solvent Resistance Hydrocarbons: Excellent
- Oxygenated Solvents: Fair
- Oil and Gasoline: Excellent
- Animal and Vegetable Oils: Good
- Dielectric Properties: Good
