High Pressure Resistance Rubber O Ring Seals

Most commonly used general purpose o-ring material because of relative low cost, good mechanical properties, and basic resistance to many common lubricants. Specific physical and chemical resistances vary by compound formulation

Buna-N Product Features

• Resistant to: air, alcohols, alkalines, diluted acids, engine coolants, gasoline, water, hydraulic fluids, mineral oil, silicone greases, motor oil, vegetable oil
• Do not use with: brake fluids, acetones
• Operational temperature range: -40°F to 250°F (-40°C to 121°C)
• Hardness range (durometer): 40-90
• Standard hardness: 70 Shore A
• Tensile range: 200-3000 psi
• Maximum elongation: ≈300%
• Adheres well to metals
• Standard color: black; custom colors are available upon request
• Available specifications: FDA, UL, MIL-SPEC, 3/A; other specifications may be available upon request

Buna-N Chemical Compatibility & Characteristics

If Buna-N is not compatible with your application, view our chemical compatibility chart to find the right material for your unique needs

• Oil resistance: Excellent
• Dynamic resistance: Good to excellent
• Set resistance: Good to excellent
• Tensile strength: Good to excellent
• Abrasion resistance: Good
• Cold resistance: Good
• Heat resistance: Good
• Impermeability: Good
• Chemical resistance: Fair to good
• Water steam resistance: Fair to good
• Acid resistance: Fair
• Electrical properties: Fair
• Tear resistance: Fair
• Weather resistance: Fair
• Flame resistance: Poor
• Ozone resistance: Poor

Specification: ASTM 2000 M2BG714 A14 B14 EA14 EO14 EO34 EF11 EF21

Testing Equipment

Our workshop


Company information