PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X318Gasket

Sealcraft Corporation · NSN 5330-00-190-4221 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-190-4221 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-190-4221. Primary manufacturer part number: X318.
Features
  • Gasket — FSC 5330
  • Aperture Diameter: 0.391 INCHES NOMINAL IN
  • Outside Diameter: 0.688 INCHES NOMINAL IN
  • Material: ASBESTOS AND COPPER OVERALL
  • Style Designator: CIRCULAR
  • Cross-Sectional Shape Style: METAL WITH SOFT FILLER
  • Cross-Sectional Thickness: 0.078 INCHES NOMINAL IN
  • 6 verified cross-references
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 5330-00-190-4221, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sealcraft Corporation. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-190-4221
Primary Part NumberX318
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSealcraft Corporation
StatusACTIVE
Aperture Diameter0.391 INCHES NOMINAL IN
Outside Diameter0.688 INCHES NOMINAL IN
MaterialASBESTOS AND COPPER OVERALL
Style DesignatorCIRCULAR
Cross-Sectional Shape StyleMETAL WITH SOFT FILLER
Cross-Sectional Thickness0.078 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-114-96012BX310A22 INTERCHANGEABLE
Bearing,ball,annular
Mack Trucks Inc Parts Opn
5305-01-652-096661192 INTERCHANGEABLE
Screw,cap,hexagon Head
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
22CR18 Oshkosh Defense Llc (USA)
DC3331 American Standard Inc Westinghouse Air Brake Co Div (USA)
X318 PRIMARY Sealcraft Corporation (USA)
A7030-14 PRIMARY Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
YR371 PRIMARY Johnson Controls Navy Systems, Llc (USA)
22CR18 Oshkosh Corp (USA)
Related Parts
3110-00-114-9601INTERCHANGEABLE
BEARING,BALL,ANNULAR
2BX310A22
5305-01-652-0966INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
61192

Frequently Asked Questions

What is NSN 5330-00-190-4221?

NSN 5330-00-190-4221 is a Gasket, manufactured by Sealcraft Corporation, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-190-4221?

NSN 5330-00-190-4221 has 6 cross-referenced part numbers: 22CR18 (Oshkosh Defense Llc), DC3331 (American Standard Inc Westinghouse Air Brake Co Div), X318 (Sealcraft Corporation), A7030-14 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), YR371 (Johnson Controls Navy Systems, Llc) and 1 more.

What NSN replaces 5330-00-190-4221?

There are 2 known substitutes for 5330-00-190-4221: 3110-00-114-9601, 5305-01-652-0966. Verify interchangeability with system specifications before substitution.

What are the specifications of X318?

Key specifications for X318: Aperture Diameter: 0.391 INCHES NOMINAL IN; Outside Diameter: 0.688 INCHES NOMINAL IN; Material: ASBESTOS AND COPPER OVERALL; Style Designator: CIRCULAR. 6 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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