N70908

908 O-RING NITRILE (NBR, BUNA)
70 DUROMETER BLACK
CS: .087″ (2.20MM)
ID: .644″ (16.36MM)

N70908

Quantity Pricing (ea)
  • 1 for $0.048
  • 850 for $0.043
  • 4250 for $0.038
  • 8500 for $0.033
  • 17000 for $0.029
Stock & Availability (ea)
In Stock: 58,113
Inbound Stock: 0
Offsite Stock: 0 ($50 Line Min)
New Production: Unlimited ($250 Line Min)
Expedited Shipping*: 07/27/2026
Standard Shipping: 10/14/2026
*Add your desired qty and click ADD TO CART to see expedite fees and options.

Informação adicional

Peso 0.00062 lbs
Shipping Dimensions 0.818 × 0.818 × 0.087 in
Material

Color

Size

908
Durometer

Minimum Temperature -22
Maximum Temperature 250

Descrição

Product Drawing: N70908.pdf

SPEC SHEET: Nitrile (Buna) 70 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&degC (-40&degF)
Standard High Temp: 100&degC (212&degF)