Free FedEx 2 Day shipping on orders of $50.00 or more - use Code: SPRING2022 (Online & Domestic Only) (Coupons may not be combined)

Our hours are 8:00am - 5:00pm, Monday – Thursday & 8:00am – 4:30pm Friday EST.  Orders received before 3pm EST will be shipped same day.

8-309 NBR90
Press and move to zoom.
Mouse over image to zoom.

B 11.43 X 20.73 X 1.93 N90

8-309 NBR90

UPC Code: 47937358

USD $0.40 /EACH
Retail price: USD $0.40 /EACH
    • EACH
  • Quantity Available: 10+
  • Availability: In stock
Untitled Document

 


NBR Back-up Ring

NBR, Buna N

Uncut, Dimensional stability of the O-Ring improves the sealing force and increases the service life. Preferably for static use.

General Back-up Ring Application:

Back-up Rings have no intended sealing function. Instead, as the name indicates they are supporting elements made with extrusion-resistant materials which generally have a rectangular cross section. They are installed in a groove together with an elastomeric sealing element preferably with a corresponding O-Ring in static applications. Due to the tight fit of the Back-up Ring in the housing, they prevent extrusion of the pressurized elastomeric sealing element into the sealing gap.

Used in a variety of applications such as with the use of O-Rings in high pressure applications, use of O-Ring materials with a low hardness, compensation of radial sealing gaps, use for internal and external sealing applications, reciprocating and rotating movements possible, compensation for large temperature fluctuations, static and dynamic applications.


 

Recently Viewed

590-73S AU53 BACKUP SPLIT
  • USD $15.05 /EACH
  • Retail price USD $15.05 /EACH
8-310 NBR90
  • USD $0.40 /EACH
  • Retail price USD $0.40 /EACH
8-041 FKM90
  • USD $18.05 /EACH
  • Retail price USD $18.05 /EACH