O-Ring - Australia (AU)
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 Australia (AU) - NCB is 66
Page 4 of 4
NSN Format for O-Ring
Codified by Australia
53 | 31 | 66 | 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? 1465 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.
- What is an O-Ring Set? 19 Items
- An O-Ring Set is two or more sizes and/or types of O-RINGs packaged or grouped for issue as a unit for complete replacement. See also O-RING ASSORTMENT. Excludes GASKET SET.
Stock Items From Supply Class 5331 Page 4 of 4
- 661541914
- S056A1E1822/522
- RNCC: 3 | RNVC: 2
- 661584015
- AG-Z000B
- RNCC: 3 | RNVC: 2
- 661482184
- D241
- RNCC: 3 | RNVC: 2
- 661387458
- 196630-06470
- RNCC: 3 | RNVC: 2
- 661592273
- N7V-842.95 X 7.95MM
- RNCC: 3 | RNVC: 2
- 661321991
- BS-014
- RNCC: 3 | RNVC: 1
- 30-0198
- RNCC: 5 | RNVC: 2
- 00027098
- RNCC: 5 | RNVC: 2
- 661560272
- B2401 G230-250
- RNCC: 3 | RNVC: 2
- 661474913
- AS2842-1986
- RNCC: 3 | RNVC: 1
- AS2842-016
- RNCC: 3 | RNVC: 1
- 524D1120001-4
- RNCC: 3 | RNVC: 2
- 661525682
- 160067-01
- RNCC: 3 | RNVC: 2
- 661560280
- C4401745-249
- RNCC: 3 | RNVC: 2
- 661400373
- 5-612N674-70
- RNCC: 3 | RNVC: 2
- 1465053
- RNCC: 3 | RNVC: 2
- N7-611
- RNCC: 5 | RNVC: 2
- 661408934
- BS1806-REF 115
- RNCC: 3 | RNVC: 2
- BS1806-REF115
- RNCC: 3 | RNVC: 2
- 661397113
- 202-607
- RNCC: 3 | RNVC: 1
- 5.3X2.4 N70
- RNCC: 3 | RNVC: 2
- 661488877
- 9500-006-078
- RNCC: 3 | RNVC: 2
- 661370141
- BS4518-1245-30
- RNCC: 3 | RNVC: 1
- TF1820-124-5
- RNCC: 3 | RNVC: 2
- 202-750-4470
- RNCC: 3 | RNVC: 2
- 661537590
- A14-180085-7-023
- RNCC: 3 | RNVC: 2
- 661392352
- 915/4/08753/541
- RNCC: 3 | RNVC: 2
- 661397072
- 202-617-4470
- RNCC: 3 | RNVC: 2
- 202-617-4470
- RNCC: 3 | RNVC: 2
- 661124310
- 146P4201-002-5
- RNCC: 3 | RNVC: 1
- 40512-12-22
- RNCC: 3 | RNVC: 1
- 661397700
- AS2842-340
- RNCC: 3 | RNVC: 2
- 661378831
- 24311-000090
- RNCC: 3 | RNVC: 2
- 661227133
- 238949
- RNCC: 3 | RNVC: 2
- FA745238949
- RNCC: 3 | RNVC: 2
- F745-238949
- RNCC: 5 | RNVC: 2
- 661410431
- RO-DS52
- RNCC: 3 | RNVC: 2
- 661408935
- BS1806-REF 331
- RNCC: 3 | RNVC: 2
- BS1806-REF331
- RNCC: 3 | RNVC: 2
- 661402835
- TF1805/0080010
- RNCC: 3 | RNVC: 2
- 661463598
- 5003-1402
- RNCC: 3 | RNVC: 2
- 661535848
- PLATE 90910-0139-124
- RNCC: 3 | RNVC: 2
- 661402833
- TF1819/4420030
- RNCC: 3 | RNVC: 2
- 661560283
- C4401745-252
- RNCC: 3 | RNVC: 2
- 661537601
- A14-180107-1-024
- RNCC: 3 | RNVC: 2
- 661004394
- BS 1806
- RNCC: 3 | RNVC: 1
- BS250
- RNCC: 3 | RNVC: 2
- 695D2527ITEM7
- RNCC: 5 | RNVC: 2
- 853-7596
- RNCC: 5 | RNVC: 2
- 661463601
- 5003-2146
- RNCC: 3 | RNVC: 2
- 661490006
- SR98 O-RING
- RNCC: 3 | RNVC: 2
- BS118 VITON BROWN
- RNCC: 5 | RNVC: 2
- 661378836
- 24341-000440
- RNCC: 3 | RNVC: 2
- 660172953
- BS 1806
- RNCC: 3 | RNVC: 1
- BS 1806-260
- RNCC: 3 | RNVC: 1
- 6230-38
- RNCC: 3 | RNVC: 2
- BS260
- RNCC: 3 | RNVC: 2
- 661519677
- N0674 2-454
- RNCC: 3 | RNVC: 2
- 661454220
- 700206
- RNCC: 3 | RNVC: 2
- 660172942
- BS 1806
- RNCC: 3 | RNVC: 1
- BS1806-249
- RNCC: 3 | RNVC: 1
- 4107
- RNCC: 3 | RNVC: 2
- JW50-249-N70
- RNCC: 3 | RNVC: 2
- 6230-27
- RNCC: 3 | RNVC: 2