PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M22050-1-027O-Ring

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5331-01-148-8215 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-148-8215 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-148-8215. Primary manufacturer part number: M22050-1-027.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 1.441 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
  • Center Hole Diameter: 1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
  • 9 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Isobutylene-Isoprene Class Iir construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-148-8215, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-148-8215
Primary Part NumberM22050-1-027
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Outside Diameter1.441 INCHES NOMINAL IN
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MaterialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
Center Hole Diameter1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5331-00-064-4354 INTERCHANGEABLE
O-Ring
5331-00-283-4609 INTERCHANGEABLE
O-Ring
5331-00-715-2192 INTERCHANGEABLE
O-Ring
5331-01-646-10809464K271 INTERCHANGEABLE
O-Ring
Mcmaster-Carr Supply Co
5331-01-662-9139AS568-027 INTERCHANGEABLE
O-Ring
Gentex Corp
5331-01-668-1958 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
M22050-1-027 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AS568-027 Sae International Dba Sae International (USA)
MIL-DTL-22050 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-G-22050D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AS568-027 Society of Automotive Engineers Inc (USA)
9521 PIECE 25A BUT4L Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
MIL-DTL-22050 TY 1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AS568A-027MIL-G-22050 Society of Automotive Engineers Inc (USA)
2-027E529-6 Parker-Hannifin Corp Div O-Ring Division (USA)
Related Parts
5331-00-064-4354INTERCHANGEABLE
O-RING
5331-00-283-4609INTERCHANGEABLE
O-RING
5331-00-715-2192INTERCHANGEABLE
O-RING
5331-01-646-1080INTERCHANGEABLE
O-RING
9464K271
5331-01-662-9139INTERCHANGEABLE
O-RING
AS568-027
5331-01-668-1958INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5331-01-148-8215?

NSN 5331-01-148-8215 is a O-Ring, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-148-8215?

NSN 5331-01-148-8215 has 9 cross-referenced part numbers: M22050-1-027 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AS568-027 (Sae International Dba Sae International), MIL-DTL-22050 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-G-22050D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AS568-027 (Society of Automotive Engineers Inc) and 4 more.

What NSN replaces 5331-01-148-8215?

There are 6 known substitutes for 5331-01-148-8215: 5331-00-064-4354, 5331-00-283-4609, 5331-00-715-2192 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M22050-1-027?

Key specifications for M22050-1-027: Outside Diameter: 1.441 INCHES NOMINAL IN; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR; Center Hole Diameter: 1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN. 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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