PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

US8-8O-Ring

Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc · NSN 5331-00-054-6866 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-054-6866 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-054-6866. Primary manufacturer part number: US8-8.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 2.484 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.139 INCHES NOMINAL IN
  • 50 verified cross-references
  • Primary manufacturer: Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-054-6866, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-054-6866
Primary Part NumberUS8-8
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerGarlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc
StatusCANCELLED
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter2.484 INCHES NOMINAL IN
Cross-Sectional Height0.139 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3455-00-021-2406 INTERCHANGEABLE
File,rotary
4730-00-088-8666SAE J530 4-4-4 130425B INTERCHANGEABLE
Tee,pipe
Sae International Dba Sae International
2915-00-122-661039-10113 INTERCHANGEABLE
Filter Element,fluid
Hydro-Aire Aerospace Corp
5940-00-177-7974 INTERCHANGEABLE
Terminal,lug
5365-00-194-067973008 INTERCHANGEABLE
Shim
Lucent Technologies Inc Corporate Headquarters
5330-00-496-080118668 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5331-00-542-1855 INTERCHANGEABLE
O-Ring
3110-00-555-523813090444 INTERCHANGEABLE
Bearing,ball,annular
Champion Road Machinery Inc Pro-Pav Div
6145-00-578-6076 INTERCHANGEABLE
Wire,electrical
5310-00-639-3995186608 INTERCHANGEABLE
Washer,key
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
Cross-Reference Index
Part NumberManufacturer
US8-8 Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc (USA)
2900-137ALT2PC11 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
3055-108ALT1PCC3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
3068-147PCR3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
546866 Liebherr-Aerospace Lindenberg Gmbh (DEU)
3068-146PCR3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
12M400 Hale Products, Inc. (USA)
HN28PC24 Hale Products, Inc. (USA)
AN6230B8 Le Joint Francais (FRA)
3368-142PC03 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
4279-167PC24 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
D10733-34-26 Air Products & Chemicals, Inc (USA)
3782-13REVBPC13 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2976-37ALT3PCF3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
BULLETIN56-2ITEM13 Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA)
61429PC49 Patterson Pump Co Div Patterson Pump Company (USA)
574-7000-812351REVAPC37 Naval Ship Systems Command (USA)
240-2200-1036757PC74 Naval Ship Systems Command (USA)
909-8 Parker Hannifin Corporation Div O-Ring Division (USA)
546866 Army Weapons Command Attn Amswe-Ree-S (USA)
Related Parts
3455-00-021-2406INTERCHANGEABLE
FILE,ROTARY
4730-00-088-8666INTERCHANGEABLE
TEE,PIPE
SAE J530 4-4-4 130425B
2915-00-122-6610INTERCHANGEABLE
FILTER ELEMENT,FLUID
39-10113
5940-00-177-7974INTERCHANGEABLE
TERMINAL,LUG
5365-00-194-0679INTERCHANGEABLE
SHIM
73008
5330-00-496-0801INTERCHANGEABLE
SEAL,PLAIN ENCASED
18668
5331-00-542-1855INTERCHANGEABLE
O-RING
3110-00-555-5238INTERCHANGEABLE
BEARING,BALL,ANNULAR
13090444
6145-00-578-6076INTERCHANGEABLE
WIRE,ELECTRICAL
5310-00-639-3995INTERCHANGEABLE
WASHER,KEY
186608
3040-00-895-8822INTERCHANGEABLE
PAWL
9098
4730-00-904-9656INTERCHANGEABLE
EXPANSION JOINT,PIPE
110-10-8

Frequently Asked Questions

What is NSN 5331-00-054-6866?

NSN 5331-00-054-6866 is a O-Ring, manufactured by Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-054-6866?

NSN 5331-00-054-6866 has 50 cross-referenced part numbers: US8-8 (Garlock Inc Valves and Industrial Plastics Div Sub of Coltec Industries Inc), 2900-137ALT2PC11 (Electric Boat Corporation Div General Dynamics Electric Boat), 3055-108ALT1PCC3 (Electric Boat Corporation Div General Dynamics Electric Boat), 3068-147PCR3 (Electric Boat Corporation Div General Dynamics Electric Boat), 546866 (Liebherr-Aerospace Lindenberg Gmbh) and 45 more.

What NSN replaces 5331-00-054-6866?

There are 12 known substitutes for 5331-00-054-6866: 3455-00-021-2406, 4730-00-088-8666, 2915-00-122-6610 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of US8-8?

Key specifications for US8-8: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 2.484 INCHES NOMINAL IN; Cross-Sectional Height: 0.139 INCHES NOMINAL IN. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-054-6866 still in active supply?

NSN 5331-00-054-6866 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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