PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S7-65O-Ring

Houghton International Inc. · NSN 5331-00-196-5351 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-196-5351 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-196-5351. Primary manufacturer part number: S7-65.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 6.202 INCHES MINIMUM AND 6.248 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
  • 23 verified cross-references
  • Primary manufacturer: Houghton International 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 5331-00-196-5351, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Houghton International Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 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
NSN5331-00-196-5351
Primary Part NumberS7-65
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHoughton International Inc.
StatusCANCELLED
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter6.202 INCHES MINIMUM AND 6.248 INCHES MAXIMUM IN
Cross-Sectional Height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5940-00-113-81830097892 INTERCHANGEABLE
Terminal,lug
Denel Vehicle Systems
5330-00-154-879321161-3869 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5133-00-189-9251 INTERCHANGEABLE
Drill,twist
5331-00-585-3646MS28775-438 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5330-00-698-8632182065 INTERCHANGEABLE
Seal,plain Encased
Woodward, Inc.
2915-00-754-491111438 INTERCHANGEABLE
Impeller,pump,centrifugal
Parker Hannifin Corp Dba Pneutronics
4320-00-859-6338M03068 INTERCHANGEABLE
Seal Assembly,shaft,spring Loade
John Crane, Inc
6550-00-880-5608211438 INTERCHANGEABLE
Culture Medium,mueller-Hinton
Becton, Dickinson and Company Dba Becton Dickinson & Co
5305-00-887-154711438 INTERCHANGEABLE
Setscrew
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5305-00-939-92044901-60 INTERCHANGEABLE
Screw,cap,hexagon Head
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
S7-65 Houghton International Inc. (USA)
ZB287-1004P65 Raytheon Company Div Corp (USA)
AN6227B65 Aeronautical Standards Group Dept of Navy and Air Force (USA)
1820-65 Superior Pipe Specialties Co Superior Hydraulics Div (USA)
PRP902-65 Parker Hannifin Corporation Div O-Ring Division (USA)
11-438 Strohmeyer, Julie a. Dba Julie a. Strohmeyer (USA)
N304-7-65 Parker-Hannifin Corp Div O-Ring Division (USA)
0184-65 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
3765-248REVAPC16 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
308-845 Cpi Satcom & Antenna Technologies Inc. (USA)
6225-65 Federal-Mogul Corp Chassis Products Div (USA)
569-6401-1191215ALTAPC11 Naval Ship Systems Command (USA)
572-3801-1416114ALTAPC42 Naval Ship Systems Command (USA)
PS1-30-5-65 Parker-Hannifin Corp Div O-Ring Division (USA)
AN6227-65 Walter Motor Truck Co (USA)
AN6227-65 Aeronautical Standards Group Dept of Navy and Air Force (USA)
1820-65 Strohmeyer, Julie a. Dba Julie a. Strohmeyer (USA)
AN6227B65 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
575-4801-1487063REVAPC16 Naval Ship Systems Command (USA)
546835 Army Weapons Command Attn Amswe-Ree-S (USA)
Related Parts
5940-00-113-8183INTERCHANGEABLE
TERMINAL,LUG
0097892
5330-00-154-8793INTERCHANGEABLE
SEAL,PLAIN ENCASED
21161-3869
5133-00-189-9251INTERCHANGEABLE
DRILL,TWIST
5331-00-585-3646INTERCHANGEABLE
O-RING
MS28775-438
5330-00-698-8632INTERCHANGEABLE
SEAL,PLAIN ENCASED
182065
2915-00-754-4911INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
11438
4320-00-859-6338INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT,SPRING LOADE
M03068
6550-00-880-5608INTERCHANGEABLE
CULTURE MEDIUM,MUELLER-HINTON
211438
5305-00-887-1547INTERCHANGEABLE
SETSCREW
11438
5305-00-939-9204INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
4901-60
4720-01-036-8086INTERCHANGEABLE
TUBING,NONMETALLIC
11438
4820-01-145-0927INTERCHANGEABLE
VALVE,SHUTTLE

Frequently Asked Questions

What is NSN 5331-00-196-5351?

NSN 5331-00-196-5351 is a O-Ring, manufactured by Houghton International Inc., classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-196-5351?

NSN 5331-00-196-5351 has 23 cross-referenced part numbers: S7-65 (Houghton International Inc.), ZB287-1004P65 (Raytheon Company Div Corp), AN6227B65 (Aeronautical Standards Group Dept of Navy and Air Force), 1820-65 (Superior Pipe Specialties Co Superior Hydraulics Div), PRP902-65 (Parker Hannifin Corporation Div O-Ring Division) and 18 more.

What NSN replaces 5331-00-196-5351?

There are 12 known substitutes for 5331-00-196-5351: 5940-00-113-8183, 5330-00-154-8793, 5133-00-189-9251 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S7-65?

Key specifications for S7-65: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 6.202 INCHES MINIMUM AND 6.248 INCHES MAXIMUM IN; Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-196-5351 still in active supply?

NSN 5331-00-196-5351 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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