PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S55O-Ring

Monroe Engineering Llc Dba Monroe Pmp · NSN 5331-01-676-2576 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-676-2576 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-676-2576. Primary manufacturer part number: S55.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 2.146 INCHES NOMINAL IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Temp Rating: 300.0 FAHRENHEIT DEGF
  • 1 verified cross-reference
  • Primary manufacturer: Monroe Engineering Llc Dba Monroe Pmp
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorocarbon Class Fpm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-676-2576, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Monroe Engineering Llc Dba Monroe Pmp. Government technical data includes 3 verified specifications, 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-676-2576
Primary Part NumberS55
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMonroe Engineering Llc Dba Monroe Pmp
StatusACTIVE
Center Hole Diameter2.146 INCHES NOMINAL IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Temp Rating300.0 FAHRENHEIT DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6240-00-012-5588 INTERCHANGEABLE
Lamp,incandescent
5950-00-280-5732 INTERCHANGEABLE
Transformer,power
2520-00-436-1479S55 INTERCHANGEABLE
Sliding Sleeve Asse
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
3455-00-517-5964 INTERCHANGEABLE
Cutter,milling,end
5826-00-691-2629F90AIC8 INTERCHANGEABLE
Control,direction Finder
Joint Electronics Type Designation System
2805-00-733-88157338815 INTERCHANGEABLE
Cylinder Sleeve
U S Army Tank Automotive Command Amsta-Im-Mm
4320-01-322-0948110113-154 INTERCHANGEABLE
Pump Unit,centrifugal
Armstrong Pumps Inc
5340-01-683-2100S-55 INTERCHANGEABLE
Plunger,quick Release
Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier
Cross-Reference Index
Part NumberManufacturer
S55 PRIMARY Monroe Engineering Llc Dba Monroe Pmp (USA)
Related Parts
6240-00-012-5588INTERCHANGEABLE
LAMP,INCANDESCENT
5950-00-280-5732INTERCHANGEABLE
TRANSFORMER,POWER
2520-00-436-1479INTERCHANGEABLE
SLIDING SLEEVE ASSE
S55
3455-00-517-5964INTERCHANGEABLE
CUTTER,MILLING,END
5826-00-691-2629INTERCHANGEABLE
CONTROL,DIRECTION FINDER
F90AIC8
2805-00-733-8815INTERCHANGEABLE
CYLINDER SLEEVE
7338815
4320-01-322-0948INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
110113-154
5340-01-683-2100INTERCHANGEABLE
PLUNGER,QUICK RELEASE
S-55

Frequently Asked Questions

What is NSN 5331-01-676-2576?

NSN 5331-01-676-2576 is a O-Ring, manufactured by Monroe Engineering Llc Dba Monroe Pmp, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-676-2576?

NSN 5331-01-676-2576 has 1 cross-referenced part number: S55 (Monroe Engineering Llc Dba Monroe Pmp).

What NSN replaces 5331-01-676-2576?

There are 8 known substitutes for 5331-01-676-2576: 6240-00-012-5588, 5950-00-280-5732, 2520-00-436-1479 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S55?

Key specifications for S55: Part Name Assigned by Controlling Agency: O-RING; Center Hole Diameter: 2.146 INCHES NOMINAL IN; Material: RUBBER FLUOROCARBON CLASS FPM; Temp Rating: 300.0 FAHRENHEIT DEGF. 4 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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