PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7505851O-Ring

Pti Technologies Inc. · NSN 5331-00-346-9785 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-346-9785 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-346-9785. Primary manufacturer part number: 7505851.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
  • Outside Diameter: 1.156 INCHES NOMINAL IN
  • Elongation Percentage: 125 MAXIMUM
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL
  • Cross-Sectional Height: 0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • 3 verified cross-references
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 5331-00-346-9785, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Pti Technologies Inc.. Government technical data includes 6 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-346-9785
Primary Part Number7505851
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerPti Technologies Inc.
StatusACTIVE
Center Hole Diameter0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
Outside Diameter1.156 INCHES NOMINAL IN
Elongation Percentage125 MAXIMUM
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Hardness Rating90.0 SHORE DUROMETER A NOMINAL
Cross-Sectional Height0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5961-00-803-8773 INTERCHANGEABLE
Semiconductor Device,diode
5325-01-419-1322750585-1 INTERCHANGEABLE
Latch,snapslide Fastener
General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations
Cross-Reference Index
Part NumberManufacturer
52910-12 Arvinmeritor Inc (USA)
7505851 PRIMARY Pti Technologies Inc. (USA)
7505851 Arvinmeritor Inc (USA)
Related Parts
5961-00-803-8773INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5325-01-419-1322INTERCHANGEABLE
LATCH,SNAPSLIDE FASTENER
750585-1

Frequently Asked Questions

What is NSN 5331-00-346-9785?

NSN 5331-00-346-9785 is a O-Ring, manufactured by Pti Technologies Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-346-9785?

NSN 5331-00-346-9785 has 3 cross-referenced part numbers: 52910-12 (Arvinmeritor Inc), 7505851 (Pti Technologies Inc.), 7505851 (Arvinmeritor Inc).

What NSN replaces 5331-00-346-9785?

There are 2 known substitutes for 5331-00-346-9785: 5961-00-803-8773, 5325-01-419-1322. Verify interchangeability with system specifications before substitution.

What are the specifications of 7505851?

Key specifications for 7505851: Center Hole Diameter: 0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Outside Diameter: 1.156 INCHES NOMINAL IN; Elongation Percentage: 125 MAXIMUM; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 6 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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