468 O-RING NITRILE (NBR, BUNA)
70 DUROMETER BLACK
CS: .275″ (6.99MM)
ID: 19.455″ (494.16MM)

N70468

Stock e disponibilità
Disponibile: 103
Stock in entrata: 250
Quantità A disposizione
250 09/03/2024
Offsite Stock: 0 ($50 Linea min)
Nuova produzione: illimitata ($250 Linea min)
Spedizione rapida *: 07/24/2024
Spedizione standard: 10/14/2024
* Aggiungi la quantità desiderata e fai clic su AGGIUNGI AL CARRELLO per vedere le tariffe e le opzioni accelerate.

Scambia i numeri di parte

  • MCMASTER-CARR 9452K462

Informazioni aggiuntive

Peso 0.1656 lbs
Shipping Dimensions 20.005 × 20.005 × 0.275 in
Material

Color

Durometer

Size

468

Descrizione

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)