PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4638Gasket

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5330-00-442-0208 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-442-0208 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-442-0208. Primary manufacturer part number: 4638.
Features
  • Gasket — FSC 5330
  • Cross-Sectional Thickness: 0.078 INCHES NOMINAL IN
  • Aperture Diameter: 0.750 INCHES NOMINAL IN
  • Outside Diameter: 0.938 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: METAL WITH SOFT FILLER
  • Material: ASBESTOS AND COPPER OVERALL
  • FSC Application Data: ENGINE,AIRCRAFT,RECIPROCATING
  • Style Designator: CIRCULAR
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Asbestos and Copper Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-442-0208, 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 7 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-442-0208
Primary Part Number4638
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Cross-Sectional Thickness0.078 INCHES NOMINAL IN
Aperture Diameter0.750 INCHES NOMINAL IN
Outside Diameter0.938 INCHES NOMINAL IN
Cross-Sectional Shape StyleMETAL WITH SOFT FILLER
MaterialASBESTOS AND COPPER OVERALL
FSC Application DataENGINE,AIRCRAFT,RECIPROCATING
Style DesignatorCIRCULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3030-00-117-92854638 INTERCHANGEABLE
Belts,v,matched Set
Harbormaster Marine, Inc
5905-00-156-70854638 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Sensor Systems, L.l.c. Dba Sensor Systems Llc
5136-00-403-555126822 INTERCHANGEABLE
Die Head and Die,hand
Curtis-Toledo, Inc.
3120-00-469-12913435A12PC57 INTERCHANGEABLE
Bearing,sleeve
Bae Systems Land & Armaments L.p.
6140-01-180-75884638 INTERCHANGEABLE
Roller,battery Box
Elliott Machine Works Inc
5120-01-215-93834638 INTERCHANGEABLE
Retrieving Tool,cable
Huntington Partners, Inc. Dba Continental Tool & Mfg.
5120-01-335-8164S381 INTERCHANGEABLE
Socket,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5950-01-359-95314638 INTERCHANGEABLE
Reactor
Amecon Inc
4530-01-396-247946-38 INTERCHANGEABLE
Lens,quartz Scanner
Fireye Inc
Cross-Reference Index
Part NumberManufacturer
4638 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
4638 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
3030-00-117-9285INTERCHANGEABLE
BELTS,V,MATCHED SET
4638
5905-00-156-7085INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
4638
5136-00-403-5551INTERCHANGEABLE
DIE HEAD AND DIE,HAND
26822
3120-00-469-1291INTERCHANGEABLE
BEARING,SLEEVE
3435A12PC57
6140-01-180-7588INTERCHANGEABLE
ROLLER,BATTERY BOX
4638
5120-01-215-9383INTERCHANGEABLE
RETRIEVING TOOL,CABLE
4638
5120-01-335-8164INTERCHANGEABLE
SOCKET,SOCKET WRENCH
S381
5950-01-359-9531INTERCHANGEABLE
REACTOR
4638
4530-01-396-2479INTERCHANGEABLE
LENS,QUARTZ SCANNER
46-38

Frequently Asked Questions

What is NSN 5330-00-442-0208?

NSN 5330-00-442-0208 is a Gasket, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-442-0208?

NSN 5330-00-442-0208 has 2 cross-referenced part numbers: 4638 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4638 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5330-00-442-0208?

There are 9 known substitutes for 5330-00-442-0208: 3030-00-117-9285, 5905-00-156-7085, 5136-00-403-5551 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4638?

Key specifications for 4638: Cross-Sectional Thickness: 0.078 INCHES NOMINAL IN; Aperture Diameter: 0.750 INCHES NOMINAL IN; Outside Diameter: 0.938 INCHES NOMINAL IN; Cross-Sectional Shape Style: METAL WITH SOFT FILLER. 7 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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