PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F37020-120O-Ring

Funk Mfg Co Sub of Deere and Co · NSN 5331-00-731-7871 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-731-7871 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-731-7871. Primary manufacturer part number: F37020-120.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 1.234 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material: RUBBER SYNTHETIC
  • 2 verified cross-references
  • Primary manufacturer: Funk Mfg Co Sub of Deere and Co
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-731-7871, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Funk Mfg Co Sub of Deere and Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-731-7871
Primary Part NumberF37020-120
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerFunk Mfg Co Sub of Deere and Co
StatusACTIVE
Center Hole Diameter1.234 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MaterialRUBBER SYNTHETIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5133-00-189-9283 INTERCHANGEABLE
Drill,twist
5133-00-228-1344 INTERCHANGEABLE
Drill,twist
5315-00-276-637412238 INTERCHANGEABLE
Pin,straight,headed
Curtiss-Wright Controls, Inc. Div Actuation Division
5120-00-757-0773 INTERCHANGEABLE
Puller,mechanical
2915-00-942-839812238 INTERCHANGEABLE
Seat Assembly,check Valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
3455-01-203-276612238 INTERCHANGEABLE
Trepanning Tool,machine
Hougen Manufacturing, Inc
1240-01-551-575511400 INTERCHANGEABLE
Mount Subassembly
Aimpoint Inc Dba Aimpoint Inc
Cross-Reference Index
Part NumberManufacturer
12238 Funk Mfg Co Sub of Deere and Co (USA)
F37020-120 PRIMARY Funk Mfg Co Sub of Deere and Co (USA)
Related Parts
5133-00-189-9283INTERCHANGEABLE
DRILL,TWIST
5133-00-228-1344INTERCHANGEABLE
DRILL,TWIST
5315-00-276-6374INTERCHANGEABLE
PIN,STRAIGHT,HEADED
12238
5120-00-757-0773INTERCHANGEABLE
PULLER,MECHANICAL
2915-00-942-8398INTERCHANGEABLE
SEAT ASSEMBLY,CHECK VALVE
12238
3455-01-203-2766INTERCHANGEABLE
TREPANNING TOOL,MACHINE
12238
1240-01-551-5755INTERCHANGEABLE
MOUNT SUBASSEMBLY
11400

Frequently Asked Questions

What is NSN 5331-00-731-7871?

NSN 5331-00-731-7871 is a O-Ring, manufactured by Funk Mfg Co Sub of Deere and Co, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-731-7871?

NSN 5331-00-731-7871 has 2 cross-referenced part numbers: 12238 (Funk Mfg Co Sub of Deere and Co), F37020-120 (Funk Mfg Co Sub of Deere and Co).

What NSN replaces 5331-00-731-7871?

There are 7 known substitutes for 5331-00-731-7871: 5133-00-189-9283, 5133-00-228-1344, 5315-00-276-6374 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F37020-120?

Key specifications for F37020-120: Center Hole Diameter: 1.234 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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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