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        • POLYACETAL POM
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      • Bearing Steel Balls / Needles
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      • AED Orings
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      • NEOPRENE
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NBR

Home / Products /NBR
Seals

Hydraulic Rod Seals
Hydraulic Piston Seals
Hydraulic Wiper Seals
Pneumatic Rod Seals
Pnuematic Piston Seals
Guiding Elements
Static Sealing Elements
Rotary Shaft Seals
Axial Face Seals
Bonded Seal
End Cap Seal
Mechanical Seals
SINGLE SPRING MECHANICAL SEAL
APV PUMP SEAL
Famous Pump Seals
Metal Bellows Seals
Auto Cooling Pump Seal
Flygt Pump Seal
Inflatable Seals

Assorted Boxes

Assorted O-ring Kit Box
Copper Washer
X Rings / Four Lobed Rings

Couplings & Elements

Couplings & Elements

Belts & Pulleys

Timing Belt
V- Belts
Conveyor Belts
Flat Belt
Round Belt Pulleys

Bearings

Ball Bearings
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Taper Roller Bearings
Cylindrical Roller Bearings
Plummer Block

Hose Clamp

Hose Clamp

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Carbon Brushes And Holders

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Gasket
Gasket Sheets

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Molded And Extruded Rubber Products

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High Performance Thermoplastics
Polyamide (PA)-Nylon
UHMWPE – Ultra High Molecular Weight Polyethelene
Polyvinyl Chloride (PVC)
Polyacetal Pom
Bakelite Products

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Metallic Steel Balls
Ferrous Metal Steel Balls
Non Ferrous Metal Steel Balls
Ceramic Balls
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Bearing Steel Balls / Needles

Anti Explosive Decompression

Hammer Union Seals
AED Orings

Mechanical Face Seals

Mechanical Face Seals

O Rings

NBR
HNBR
FKM
NEOPRENE
EPDM
FFKM
AFLAS(R) TFE/P
Fluorosilicone
AED Orings

Springs

Compression Springs
Extension Springs
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NBR

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Product Description

Nitrile Rubber (NBR)

Nitrile rubber, also known as NBR or Buna N, is one of the most commonly used sealing elastomers due to its resistance to petroleum based fuels and lubricants and its relatively low price. Nitrile elastomers are copolymers of acrylonitrile and butadiene. There are a number of common variations of nitrile compounds.

Acrylonitrile Content

The acrylonitrile (ACN) content of the polymer chains can be varied from 18% to 50%. Lower ACN content gives better low temperature properties but poorer fuels and polar lubricants. Higher ACN content gives poorer low temperature properties but improved fuels and polar lubricants resistance. Standard NBRs typically have 34% ACN content.

Cure system - Sulfur-Cured vs. Peroxide-Cured

Standard Nitriles are usually sulfur-cured. Sulfur-cured compounds offer better low temperature properties but are more prone to hardening with high temperatures. Peroxide-cured nitriles have better heat resistance and lower compression sets but are more expensive and are more difficult to process.

Other Common Variations

Nitriles can be formulated with only "white list" ingredients as specified in 21.CFR 177.2600 for use in applications where the elastomer will be in contact with food or beverages.

Nitriles can be submitted for approval by the National Sanitation Foundation (NSF) for use in drinking water applications.

Nitriles can also be submitted for approval to Underwriters Laboratories (UL) for use in applications as prescribed in UL157.

Nitriles are often internally lubricated to improve ease of installation or reduce friction for dynamic applications.

General Information

  • ASTM D 1418 Designation: NBR
  • ISO/DIN 1629 Designation: NBR
  • ASTM D2000 / SAE J 200 Codes: BF, BG, BK, CH
  • Standard Color(s): Black
  • Hardness Range: 40 to 90 Shore A
  • Relative Cost: Low

Service Temperatures

  • Standard Low Temperature: -40°C / -40°F
  • Standard High Temperature: 100°C / 212°F
  • Special Compound Low Temperature: -55°C / -67°F
  • Special Compound High Temperature: 125°C / 275°F

application
  • Automotive
  • Fluid Power
  • Electronics
  • Hydraulic Fittings
  • Valves and Pumps
  • Earthmoving & Construction Equipment
  • Power Generation
  • Instrumentation
  • Filtration
  • Hydraulic Cylinders
  • Plumbing Products
  • Petrochemicals
  • Pharmaceuticals
  • Pneumatic Cylinders
  • Dairy/Food Processing
  • Chemicals & Fertilizer Plants
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location

  • Mussafah M 10, Store 2, Opposite Delicia restaurant, Abudhabi, UAE
  • +971 52 9111 432 (M)
  • +971 2 666 9957 (T)
  • sales@globalseals.net
  • procurement@globalseals.net

Seals Products

  • Hydraulic Rod Seals
  • Hydraulic Piston Seals
  • Hydraulic Wiper Seals
  • Pneumatic Rod Seals
  • Pnuematic Piston Seals
  • Guiding Elements
  • Static Sealing Elements
  • Rotary Shaft Seals
  • Axial Face Seals
  • Bonded Seal
  • End Cap Seal
  • Mechanical Seals
  • Single Spring Mechanical Seal
  • APV PUMP SEAL
  • Famous Pump Seals
  • Metal Bellows Seals
  • Auto Cooling Pump Seal
  • Flygt Pump Seal

Other Products

  • Assorted Boxes
  • Couplings & Elements
  • Belts & Pulleys
  • Bearings
  • Hose Clamp
  • Carbon Products
  • GASKET & GASKET SHEETS
  • PTFE Products
  • Thermoplastics
  • Molded And Extruded Rubber Products
  • Precision Balls
  • Anti Explosive Decompression
  • Orings
  • Springs
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