PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1866-1O-Ring

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5331-00-171-6649 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-171-6649 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-171-6649. Primary manufacturer part number: 1866-1.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 1.864 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN
  • 50 verified cross-references
  • Primary manufacturer: Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
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 5331-00-171-6649, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 32 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
NSN5331-00-171-6649
Primary Part Number1866-1
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusCANCELLED
Outside Diameter1.864 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6240-00-014-2306 INTERCHANGEABLE
Lamp,incandescent
1005-00-017-9548SP 62301 INTERCHANGEABLE
Catch,bolt
Colt's Manufacturing Company, Llc
5961-00-058-8919 INTERCHANGEABLE
Semiconductor Device,thyristor
3895-00-160-6366S81 INTERCHANGEABLE
Housing,ball Joint
Ed Etnyre & Co
5120-00-222-4506S-81FG INTERCHANGEABLE
Shovel,hand
Ampco Partners, Ltd. Dba Ampco Safety Tools
5985-00-241-90115926-001 INTERCHANGEABLE
Seal,waveguide
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
4510-00-242-4359S81 INTERCHANGEABLE
Stopper,waste Drain
Kirkhill Inc
4920-00-433-54840R3-1 INTERCHANGEABLE
Test Stand,oil Temperature Contr
Hydraulics International, Inc. Dba Hydraulics International Inc
2520-00-495-709918-66-1 INTERCHANGEABLE
Shifter Fork,vehicular
Dana Corp Spicer Transmission Div
5325-00-619-0551 INTERCHANGEABLE
Grommet,nonmetallic
Cross-Reference Index
Part NumberManufacturer
1866-1 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
6230-1 Trelleborg Sealing Solutions El Segundo, Inc. Dba Tss El Segundo (USA)
BUNA-N-223 Zf Industrieantriebe Witten Gmbh (DEU)
I16201SR832-75 Le Joint Francais (FRA)
5926-001 Hycom B.v. (NLD)
T1-4801-1286351REVAPC11 Naval Ship Systems Command (USA)
AS28775-223 Sae International Dba Sae International (USA)
ARP568-223MILP5 516-70 Zf Industrieantriebe Witten Gmbh (DEU)
S81 Houghton International Inc. (USA)
AS28775-223 Society of Automotive Engineers Inc (USA)
A1209 Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control (USA)
5330001716649 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
RY164109-7 Zf Industrieantriebe Witten Gmbh (DEU)
263X1 Joy Global Underground Mining Llc (USA)
T1-5500-1286790REVAPC31 Naval Ship Systems Command (USA)
223-8297 Parker Hannifin Corporation Div O-Ring Division (USA)
SR 832-75-223 Stillman Seal Corporation Div Stillman Seal Corperation (USA)
SR223SR832-75 Le Joint Francais (FRA)
4810-771645REVBPC19 Naval Ship Systems Command (USA)
516-6293386-33 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
6240-00-014-2306INTERCHANGEABLE
LAMP,INCANDESCENT
1005-00-017-9548INTERCHANGEABLE
CATCH,BOLT
SP 62301
5961-00-058-8919INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
3895-00-160-6366INTERCHANGEABLE
HOUSING,BALL JOINT
S81
5120-00-222-4506INTERCHANGEABLE
SHOVEL,HAND
S-81FG
5985-00-241-9011INTERCHANGEABLE
SEAL,WAVEGUIDE
5926-001
4510-00-242-4359INTERCHANGEABLE
STOPPER,WASTE DRAIN
S81
4920-00-433-5484INTERCHANGEABLE
TEST STAND,OIL TEMPERATURE CONTR
0R3-1
2520-00-495-7099INTERCHANGEABLE
SHIFTER FORK,VEHICULAR
18-66-1
5325-00-619-0551INTERCHANGEABLE
GROMMET,NONMETALLIC
6145-00-669-6710INTERCHANGEABLE
WIRE,ELECTRICAL
6610-00-888-3187INTERCHANGEABLE
BUSHING ASSEMBLY,JE
A1209

Frequently Asked Questions

What is NSN 5331-00-171-6649?

NSN 5331-00-171-6649 is a O-Ring, manufactured by Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp., classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-171-6649?

NSN 5331-00-171-6649 has 50 cross-referenced part numbers: 1866-1 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.), 6230-1 (Trelleborg Sealing Solutions El Segundo, Inc. Dba Tss El Segundo), BUNA-N-223 (Zf Industrieantriebe Witten Gmbh), I16201SR832-75 (Le Joint Francais), 5926-001 (Hycom B.v.) and 45 more.

What NSN replaces 5331-00-171-6649?

There are 12 known substitutes for 5331-00-171-6649: 6240-00-014-2306, 1005-00-017-9548, 5961-00-058-8919 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1866-1?

Key specifications for 1866-1: Outside Diameter: 1.864 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-171-6649 still in active supply?

NSN 5331-00-171-6649 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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