PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DF6503-175 NO. 74Gasket

Naval Sea Systems Command · NSN 5330-01-378-8671 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-378-8671 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-378-8671. Primary manufacturer part number: DF6503-175 NO. 74.
Features
  • Gasket — FSC 5330
  • Style Designator: NON-CIRCULAR
  • Inside Corner Radius: 1.500 INCHES NOMINAL IN
  • Aperture Width: 5.000 INCHES NOMINAL IN
  • Bolt Hole Quantity: 8
  • Hardness Rating: 50.0 ROCKWELL C MAXIMUM OVERALL
  • Aperture Length: 13.280 INCHES NOMINAL IN
  • Outside Corner Radius: 2.500 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-378-8671, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5330-01-378-8671
Primary Part NumberDF6503-175 NO. 74
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Style DesignatorNON-CIRCULAR
Inside Corner Radius1.500 INCHES NOMINAL IN
Aperture Width5.000 INCHES NOMINAL IN
Bolt Hole Quantity8
Hardness Rating50.0 ROCKWELL C MAXIMUM OVERALL
Aperture Length13.280 INCHES NOMINAL IN
Outside Corner Radius2.500 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
MaterialRUBBER OVERALL
Cross-Sectional Thickness0.030 INCHES NOMINAL IN
Hole Diameter0.380 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-01-373-0422211053779 INTERCHANGEABLE
Gasket
Naval Sea Systems Command
9320-01-438-4725 INTERCHANGEABLE
Rubber Sheet,solid
Cross-Reference Index
Part NumberManufacturer
DF6503-175 NO. 74 Naval Sea Systems Command (USA)
MIL-R-15624 CL1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
211046362 Naval Sea Systems Command (USA)
Related Parts
5330-01-373-0422INTERCHANGEABLE
GASKET
211053779
9320-01-438-4725INTERCHANGEABLE
RUBBER SHEET,SOLID

Frequently Asked Questions

What is NSN 5330-01-378-8671?

NSN 5330-01-378-8671 is a Gasket, manufactured by Naval Sea Systems Command, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-378-8671?

NSN 5330-01-378-8671 has 3 cross-referenced part numbers: DF6503-175 NO. 74 (Naval Sea Systems Command), MIL-R-15624 CL1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 211046362 (Naval Sea Systems Command).

What NSN replaces 5330-01-378-8671?

There are 2 known substitutes for 5330-01-378-8671: 5330-01-373-0422, 9320-01-438-4725. Verify interchangeability with system specifications before substitution.

What are the specifications of DF6503-175 NO. 74?

Key specifications for DF6503-175 NO. 74: Style Designator: NON-CIRCULAR; Overall Width: 7.000 INCHES NOMINAL IN; Inside Corner Radius: 1.500 INCHES NOMINAL IN; Aperture Width: 5.000 INCHES NOMINAL IN. 13 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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