O-Ring - Portugal (PT)
Federal Supply Class (FSC): 5331
NATO Supply Classification Class (NSC): 5331
Federal Supply Group (FSG): 53 Hardware and Abrasives
NATO Supply Classification Group (NSG): 53 Hardware and Abrasives
Items Managed by Portugal (PT) - NCB is 26
NSN Format for O-Ring
Codified by Portugal
| 53 | 31 | 26 | XXX | XXXX | |||
|---|---|---|---|---|---|---|---|
| Group FSG | Class | NCB | Identifier | ||||
| FSC Federal Supply Class | NIIN | ||||||
| NSN | |||||||
NATO Supply Class 5331 refers to O-Rings, which are a type of sealing device used in various industries and applications. O-Rings are circular elastomeric rings with a round cross-section, typically made from materials such as rubber or silicone. They are designed to create a tight seal between two mating surfaces, preventing leakage of fluids or gases.
In the NATO Supply Group 53, which encompasses Hardware And Abrasives, O-Rings fall under the specific class of 5331. This class is dedicated to the categorization and identification of O-Rings within the NATO supply system.
O-Rings are widely used in a variety of industries, including automotive, aerospace, plumbing, and manufacturing. They are known for their versatility, durability, and ability to withstand high pressures and temperatures. O-Rings are commonly used in hydraulic and pneumatic systems, engines, pumps, valves, and other mechanical applications.
The NATO Supply Class 5331 for O-Rings ensures standardized identification and classification of these essential sealing devices within the NATO supply chain. This classification system helps streamline procurement processes and ensures compatibility and interchangeability of O-Rings across different NATO member countries.
If you need further information or assistance regarding O-Rings or any other topic, feel free to ask!

Excludes Packing and Gasket Material (FSC 5330).
Frequently Asked Questions(FAQ) for Federal Supply Class 5331
- What is Federal Supply Class 5331?
- FSC 5331 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5331) in the USA for supply items codified in the category of O-Ring.
- What is NATO Supply Classification Class 5331?
- NSC 5331 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5331 in the USA) for supply items codified in the category of O-Ring.
- Which Federal Supply Group is FSC 5331 in?
- FSC 5331 is in Federal Supply Group (FSG) 53 which contains Hardware and Abrasives.
- Which NATO Supply Classification Group is NSC 5331 in?
- NSC 5331 is in NATO Supply Classification Group (NSG) 53 which contains Hardware and Abrasives.
Supply Items Included in Federal Supply Class 5331
- What is an O-Ring? 27 Items
- An O-Ring is a nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see PACKING,PREFORMED. For noncircular items with a round cross-section, see SEAL,NONMETALLIC ROUND SECTION and RUBBER,ROUND SECTION.
Stock Items From Supply Class 5331 Page 1 of 1
- 263001035
- 8472/40400000
- RNCC: 3 | RNVC: 2
- 263009013
- 99986375M
- RNCC: 3 | RNVC: 2
- 263005817
- M1536-221314
- RNCC: 3 | RNVC: 2
- 263011385
- 968725
- RNCC: 3 | RNVC: 2
- 263009031
- 39982011M
- RNCC: 3 | RNVC: 2
- 263003861
- 0732400
- RNCC: 3 | RNVC: 2
- 263009023
- 20629013M
- RNCC: 3 | RNVC: 2
- 263011342
- 925076
- RNCC: 3 | RNVC: 2
- 263010645
- 968759
- RNCC: 3 | RNVC: 2
- 263011143
- 925077
- RNCC: 3 | RNVC: 2
- 263007277
- ANILHA INOX P/ LOOPS
- RNCC: 3 | RNVC: 2
- 263003821
- 0711700
- RNCC: 3 | RNVC: 2
- 263006831
- DDM0C0247-4N4E
- RNCC: 3 | RNVC: 2
- 263011247
- 925276
- RNCC: 3 | RNVC: 2
- 263011358
- 863888
- RNCC: 3 | RNVC: 2
- 263008997
- 99940136M
- RNCC: 3 | RNVC: 2
- 263003867
- 0733100
- RNCC: 3 | RNVC: 2
- 263005196
- 14945461
- RNCC: 3 | RNVC: 2
- 263001455
- 2362/40040000
- RNCC: 3 | RNVC: 2
- 263003869
- 0733400
- RNCC: 3 | RNVC: 2
- 263005208
- 15810014
- RNCC: 3 | RNVC: 2
- 263012200
- 2-117N1206-70
- RNCC: 3 | RNVC: 2
- 263011154
- 1664473
- RNCC: 3 | RNVC: 2
- 263011449
- 925054
- RNCC: 3 | RNVC: 2
- 263012199
- 2-021N1206-70
- RNCC: 3 | RNVC: 2
- 263008381
- 2362/40040001
- RNCC: 3 | RNVC: 2