PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

385990Packing,preformed

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5330-00-865-4440 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-865-4440 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-865-4440. Primary manufacturer part number: 385990.
Features
  • Packing,preformed — FSC 5330
  • Center Hole Diameter: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
  • Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
  • Material: RUBBER FLUOROCARBON CLASS FPM OVERALL
  • Material Document and Classification: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: O-RING
  • Cross-Sectional Height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
  • 4 verified cross-references
Applications
  • Applications requiring Rubber Fluorocarbon Class Fpm Overall construction
General Description

The Packing,preformed, cataloged under National Stock Number 5330-00-865-4440, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5330-00-865-4440
Primary Part Number385990
Item NamePacking,preformed
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
Center Hole Diameter0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
Hardness Rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
MaterialRUBBER FLUOROCARBON CLASS FPM OVERALL
Material Document and ClassificationAMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleO-RING
Cross-Sectional Height0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5331-00-167-5166AS3208-05 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
385990 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
MS9387-05 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS9387-05 Le Joint Francais (FRA)
6843332-05 Allison Transmission Inc Dba Allison Transmission, Inc (USA)
Related Parts
5331-00-167-5166INTERCHANGEABLE
O-RING
AS3208-05

Frequently Asked Questions

What is NSN 5330-00-865-4440?

NSN 5330-00-865-4440 is a Packing,preformed, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-865-4440?

NSN 5330-00-865-4440 has 4 cross-referenced part numbers: 385990 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), MS9387-05 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS9387-05 (Le Joint Francais), 6843332-05 (Allison Transmission Inc Dba Allison Transmission, Inc).

What NSN replaces 5330-00-865-4440?

There is 1 known substitute for 5330-00-865-4440: 5331-00-167-5166. Verify interchangeability with system specifications before substitution.

What are the specifications of 385990?

Key specifications for 385990: Center Hole Diameter: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL; Material: RUBBER FLUOROCARBON CLASS FPM OVERALL; Material Document and Classification: AMS-7278 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-865-4440 still in active supply?

NSN 5330-00-865-4440 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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