PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7.660-103O-Ring

Porter Seal Co · NSN 5331-01-095-6400 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-095-6400 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-095-6400. Primary manufacturer part number: 7.660-103.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 7.570 INCHES MINIMUM AND 7.750 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
  • 3 verified cross-references
  • Primary manufacturer: Porter Seal Co
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr or Rubber Polyester Urethane Class Au or Rubber Polyether Urethane Class Eu construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-095-6400, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Porter Seal Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-095-6400
Primary Part Number7.660-103
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerPorter Seal Co
StatusACTIVE
Center Hole Diameter7.570 INCHES MINIMUM AND 7.750 INCHES MAXIMUM IN
Cross-Sectional Height0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3040-00-915-54957660-103 INTERCHANGEABLE
Shaft
Bera Tilt-Top Trailer Inc
Cross-Reference Index
Part NumberManufacturer
7.660-103 PRIMARY Porter Seal Co (USA)
966044-1C Raytheon Company Dba Raytheon (USA)
7-660-103 Porter Seal Co (USA)
Related Parts
3040-00-915-5495INTERCHANGEABLE
SHAFT
7660-103

Frequently Asked Questions

What is NSN 5331-01-095-6400?

NSN 5331-01-095-6400 is a O-Ring, manufactured by Porter Seal Co, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-095-6400?

NSN 5331-01-095-6400 has 3 cross-referenced part numbers: 7.660-103 (Porter Seal Co), 966044-1C (Raytheon Company Dba Raytheon), 7-660-103 (Porter Seal Co).

What NSN replaces 5331-01-095-6400?

There is 1 known substitute for 5331-01-095-6400: 3040-00-915-5495. Verify interchangeability with system specifications before substitution.

What are the specifications of 7.660-103?

Key specifications for 7.660-103: Center Hole Diameter: 7.570 INCHES MINIMUM AND 7.750 INCHES MAXIMUM IN; Cross-Sectional Height: 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU. 3 total characteristics are documented in the Federal Logistics Information System.

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