PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11803O-Ring

Lear Siegler Inc Hypro Div · NSN 5331-01-545-8809 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-545-8809 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-545-8809. Primary manufacturer part number: 11803.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 1 verified cross-reference
  • Primary manufacturer: Lear Siegler Inc Hypro Div
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 5331-01-545-8809, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Lear Siegler Inc Hypro Div. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-545-8809
Primary Part Number11803
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerLear Siegler Inc Hypro Div
StatusACTIVE
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4310-01-073-903413188 INTERCHANGEABLE
Plate Valve
American Bristol Industries Inc.
3040-01-168-701311803 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.
5120-01-367-3563 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
5930-01-547-992411803 INTERCHANGEABLE
Switch Subassembly
Gta Marine Dba Gta Marine
7310-01-558-192111803 INTERCHANGEABLE
Tank,fuel,portable Stove
Mountain Safety Research Inc
Cross-Reference Index
Part NumberManufacturer
11803 PRIMARY Lear Siegler Inc Hypro Div (USA)
Related Parts
4310-01-073-9034INTERCHANGEABLE
PLATE VALVE
13188
3040-01-168-7013INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
11803
5120-01-367-3563INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
5930-01-547-9924INTERCHANGEABLE
SWITCH SUBASSEMBLY
11803
7310-01-558-1921INTERCHANGEABLE
TANK,FUEL,PORTABLE STOVE
11803

Frequently Asked Questions

What is NSN 5331-01-545-8809?

NSN 5331-01-545-8809 is a O-Ring, manufactured by Lear Siegler Inc Hypro Div, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-545-8809?

NSN 5331-01-545-8809 has 1 cross-referenced part number: 11803 (Lear Siegler Inc Hypro Div).

What NSN replaces 5331-01-545-8809?

There are 5 known substitutes for 5331-01-545-8809: 4310-01-073-9034, 3040-01-168-7013, 5120-01-367-3563 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11803?

Key specifications for 11803: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Part Name Assigned by Controlling Agency: ORING-BUNAN; End Item Identification: SHERWOOD 1,1 1/4, & 1 1/2 (NSN 4730-01-545-8687) SEA WATER STRAINERS. 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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