canyon components logo
NB50BK53-XR-021

Image shown is representative and may differ from the actual product in size, proportions, and color shade

MIL-R-6855 Class 1 Grade 50
CS

0.070 in

(1.78 mm)

ID

0.926 in

(23.52 mm)

X-Ring dimensional reference

NBR NB50BK53 X-Ring, Size: -021

Material: NBR NB50BK53 X-Ring

Size: AS568 -021 X-Ring

Part Number: NB50BK53-XR-021

NB50BK53

NBR (Nitrile, Buna-N)

50

Shore A

MIL-R-6855 Class 1 Grade 50

Color: Black

Detailed Description

NB50BK53-XR-021 is a Black, 50 Shore A, NBR (Nitrile, Buna-N) X-Ring. It is a 50 durometer NBR (Nitrile, Buna-N). NB50BK53-XR-021 is AS568 size -021 X-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 23.52mm (Inside Diameter (ID)). Material: 50 Durometer NBR NB50BK53 X-Ring Size: AS568 -021, 1.78mm CS X 23.52mm ID (0.070" CS X 0.926" ID)

NB50BK53 typical industry applicationNB50BK53 industry symbol
canyon components logo
Technical SpecificationValue
Compound NumberNB50BK53
MaterialNBR (Nitrile, Buna-N)
ColorBlack
Durometer50 Shore A Hardness
Geometry Specifications
Cross Sectional GeometryX-Ring
Size StandardAS568
Size-021
Cross Section (CS)1.78 mm / 0.070 in
Inside Diameter (ID)23.52 mm / 0.926 in
X-Ring dimensional reference
MIL-R-6855 Class 1 Grade 50

Need a Custom Quote?

We manufacture millions of parts. Get in touch today.

Request a Quote

© 2026 Canyon Components, Inc. All rights reserved. Canyon Components International Corporation • Sitemap

These products may be covered by existing or pending patents. Canyon Components is not liable for the accuracy, currency, or completeness of information herein. All information is subject to change without notice. All trademarks and service marks are the property of their respective owners. Made withgu.dev, Icons by Icons8

* Disclaimer: Kalrez® is a registered trademark of DuPont™. It represents a high-performance perfluoroelastomer used in demanding sealing applications. Please note that the Kalrez® brand is not owned by Canyon Components. All rights and ownership of the Kalrez® trademark are held by DuPont™, ensuring the quality and reliability associated with this renowned brand.