PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

581-6Gasket

Ernst Flow Industries · NSN 5330-01-053-9837 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-053-9837 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-053-9837. Primary manufacturer part number: 581-6.
Features
  • Gasket — FSC 5330
  • Style Designator: CIRCULAR
  • Material: RUBBER CHLOROPRENE CLASS CR OVERALL
  • Cross-Sectional Thickness: 0.312 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • Outside Diameter: 0.812 INCHES NOMINAL IN
  • Aperture Diameter: 0.562 INCHES NOMINAL IN
  • 2 verified cross-references
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Chloroprene Class Cr Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-053-9837, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ernst Flow Industries. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-053-9837
Primary Part Number581-6
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerErnst Flow Industries
StatusACTIVE
Style DesignatorCIRCULAR
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Cross-Sectional Thickness0.312 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Outside Diameter0.812 INCHES NOMINAL IN
Aperture Diameter0.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5310-00-193-9977 INTERCHANGEABLE
Washer,flat
3413-00-242-3469 INTERCHANGEABLE
Drilling Machine,upright
5365-00-293-7716850614 INTERCHANGEABLE
Plug,machine Thread
Clark Material Handling Company
4820-00-357-510263913 INTERCHANGEABLE
Valve,ball
Tyco Fire Products Lp
5940-00-549-5847978101-203 INTERCHANGEABLE
Terminal,stud
Raytheon Company Dba Raytheon
5910-01-053-6833 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5998-01-337-4324 INTERCHANGEABLE
Circuit Card Assembly
4730-01-509-4397058-0016 INTERCHANGEABLE
Clamp,hose
Crane Carrier Company, Llc
5895-01-582-31885816 INTERCHANGEABLE
Amplifier-Detector
Meggitt Safety Systems Inc
3120-01-624-07505816 INTERCHANGEABLE
Bearing Assembly,stern Tube
Teledyne Flir Unmanned Ground Systems, Inc
Cross-Reference Index
Part NumberManufacturer
581-6 Ernst Flow Industries (USA)
581-1L11 PIECE 6 Ernst Flow Industries (USA)
Related Parts
5310-00-193-9977INTERCHANGEABLE
WASHER,FLAT
3413-00-242-3469INTERCHANGEABLE
DRILLING MACHINE,UPRIGHT
5365-00-293-7716INTERCHANGEABLE
PLUG,MACHINE THREAD
850614
4820-00-357-5102INTERCHANGEABLE
VALVE,BALL
63913
5940-00-549-5847INTERCHANGEABLE
TERMINAL,STUD
978101-203
5910-01-053-6833INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5998-01-337-4324INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4730-01-509-4397INTERCHANGEABLE
CLAMP,HOSE
058-0016
5895-01-582-3188INTERCHANGEABLE
AMPLIFIER-DETECTOR
5816
3120-01-624-0750INTERCHANGEABLE
BEARING ASSEMBLY,STERN TUBE
5816

Frequently Asked Questions

What is NSN 5330-01-053-9837?

NSN 5330-01-053-9837 is a Gasket, manufactured by Ernst Flow Industries, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-053-9837?

NSN 5330-01-053-9837 has 2 cross-referenced part numbers: 581-6 (Ernst Flow Industries), 581-1L11 PIECE 6 (Ernst Flow Industries).

What NSN replaces 5330-01-053-9837?

There are 10 known substitutes for 5330-01-053-9837: 5310-00-193-9977, 3413-00-242-3469, 5365-00-293-7716 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 581-6?

Key specifications for 581-6: Style Designator: CIRCULAR; Material: RUBBER CHLOROPRENE CLASS CR OVERALL; Cross-Sectional Thickness: 0.312 INCHES NOMINAL IN; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 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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