N70034

库存容量
有现货: 873,246
入库库存: 0
Offsite Stock: 5,428 ($50 最小线)
紧急运送*: 04/08/2024
标准运输: 06/26/2024
新产品:无限 ($250 最小线)
紧急运送*: 06/03/2024
标准运输: 08/21/2024
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互换零件编号

  • MCMASTER-CARR 9452K122

其他信息

重量 0.00119 磅
Shipping Dimensions 2.254 × 2.254 × 0.07 英寸
Material

Color

Durometer

Size

034

描述

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)