034 O-RING NITRILE (NBR, BUNA)
70 DUROMETER BLACK
CS: .070″ (1.78MM)
ID: 2.114″ (53.70MM)

N70034

La disponibilidad de stock
En stock: 871,486
Stock entrante: 0
Offsite Stock: 5,428 ($50 Línea Min)
Envío Acelerado *: 04/30/2024
Envío estándar: 07/19/2024
Nueva producción: Ilimitado ($250 Línea Min)
Envío Acelerado *: 06/25/2024
Envío estándar: 09/13/2024
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Números de parte de intercambio

  • MCMASTER-CARR 9452K122

Información adicional

Peso 0.00119 lbs
Shipping Dimensions 2.254 × 2.254 × 0.07 in
Material

Color

Durometer

Size

034

Descripción

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)