PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS9388-228Packing,preformed

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5330-00-865-4439 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-865-4439 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-865-4439. Primary manufacturer part number: MS9388-228.
Features
  • Packing,preformed — FSC 5330
  • Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
  • Material Document and Classification: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: RUBBER FLUOROCARBON CLASS FPM OVERALL
  • Center Hole Diameter: 2.224 INCHES MINIMUM AND 2.244 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: O-RING
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • 2 verified cross-references
Applications
  • Applications requiring Rubber Fluorocarbon Class Fpm Overall construction
General Description

The Packing,preformed, cataloged under National Stock Number 5330-00-865-4439, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-865-4439
Primary Part NumberMS9388-228
Item NamePacking,preformed
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Hardness Rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
Material Document and ClassificationAMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialRUBBER FLUOROCARBON CLASS FPM OVERALL
Center Hole Diameter2.224 INCHES MINIMUM AND 2.244 INCHES MAXIMUM IN
Cross-Sectional Shape StyleO-RING
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5331-00-165-1946AS3209-228 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MS9388-228 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
385979 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5331-00-165-1946INTERCHANGEABLE
O-RING
AS3209-228

Frequently Asked Questions

What is NSN 5330-00-865-4439?

NSN 5330-00-865-4439 is a Packing,preformed, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-865-4439?

NSN 5330-00-865-4439 has 2 cross-referenced part numbers: MS9388-228 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 385979 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5330-00-865-4439?

There is 1 known substitute for 5330-00-865-4439: 5331-00-165-1946. Verify interchangeability with system specifications before substitution.

What are the specifications of MS9388-228?

Key specifications for MS9388-228: Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: RUBBER FLUOROCARBON CLASS FPM OVERALL; Center Hole Diameter: 2.224 INCHES MINIMUM AND 2.244 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-865-4439 still in active supply?

NSN 5330-00-865-4439 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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