Nitrile Rubber (NBR / Buna-N) Technical Reference Data Sheet
General purpose elastomer for oil, fuel, and hydraulic fluid containment. Sourced from Classic Rubber Products catalog.
Resistant To / Recommended Media
Chemical media and fluids compatible under typical operating conditions:
- ✓Propane
- ✓Butane
- ✓Petroleum
- ✓Mineral Oil
- ✓Grease
- ✓Diesel Fuel
- ✓HFA Fluids
- ✓HFB Fluids
- ✓HFC Fluids
- ✓Dilute Acids
- ✓Alkali
- ✓Water
Not Recommended / Incompatible Media
Aggressive fluids or environmental factors leading to accelerated swelling or degradation:
- ✕Glycol-based brake fluids
- ✕Ozone
- ✕Ketones (MEK)
- ✕Strong Acids
- ✕Chlorinated Hydrocarbons
Key Engineering Advantages
- •Cost effective
- •High mechanical strength
- •Outstanding petroleum oil and fuel containment
Operational Limitations
- •Vulnerable to atmospheric ozone and weathering
- •Poor resistance to polar solvents
Product Families Manufactured in NBR
DKB Metal-Cased Wiper Seals
Profile: WIPER_DUAL_HEIGHT_METAL_CASED
NBR 70 O-Rings
Profile: TOROIDAL
NBR Extruded Cord
Profile: SOLID_ROUND_EXTRUSION
NBR Rotary Shaft Oil Seals
Profile: ROTARY_LIP_METAL_CASED
Engineering Reference Disclaimer
The technical data herein is compiled directly from Classic Rubber Products official catalogs and laboratory evaluations. Polymer performance is influenced by multiple interacting operational variables such as fluid pressure, seal gland compression, cycle frequency, and surface finish. Classic Rubber Products recommends testing prototypes under actual working conditions prior to full-scale deployment.