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Additional information
| Weight | 0.00596 lbs |
|---|---|
| Shipping Dimensions | 2.762 × 2.762 × 0.139 in |
| Material | |
| Color | |
| Durometer | |
| Size | 230 |
| Minimum Temperature | -13 |
| Maximum Temperature | 250 |
230 O-RING NITRILE (NBR, BUNA)
90 DUROMETER BLACK
CS: .139″ (3.53MM)
ID: 2.484″ (63.09MM)
N90230
Quantity Pricing (ea)
- 1 for $0.66
- 150 for $0.60
- 750 for $0.53
- 1500 for $0.46
- 3000 for $0.40
Interchange Part Numbers
- MCMASTER-CARR 5308T275
Description
Product Drawing: N90230.pdf
SPEC SHEET: Nitrile (Buna) 90 Durometer.pdf
Nitrile Rubber (NBR)
Material Description
Nitrile rubber (NBR) also known as 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 vary from 18% to 50%. Lower ACN content gives better low-temperature properties but inferior resistance to fuels and polar lubricants. Higher ACN content gives lesser quality low-temperature properties but improved fuels and polar lubricants resistance. Standard NBRs typically have 34% ACN content.
Cure system: Sulfur-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 more difficult to process.
Temperature Range:
Standard Low Temp: -40°C (-40°F)
Standard High Temp: 100°C (212°F)
