PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

066-07784-000Ring,wearing

Aqua-Chem, Inc. Dba Aqua-Chem Inc · NSN 4320-00-008-7329 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-008-7329 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-008-7329. Primary manufacturer part number: 066-07784-000.
Features
  • Ring,wearing — FSC 4320
  • Material: COPPER ALLOY
  • Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 5.255 INCHES MINIMUM AND 5.265 INCHES MAXIMUM IN
  • Body Outside Diameter: 6.000 INCHES MINIMUM AND 6.001 INCHES MAXIMUM IN
  • Body Style: PLAIN
  • 7 verified cross-references
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-008-7329, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 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
NSN4320-00-008-7329
Primary Part Number066-07784-000
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerAqua-Chem, Inc. Dba Aqua-Chem Inc
StatusACTIVE
MaterialCOPPER ALLOY
Material Document and ClassificationMIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter5.255 INCHES MINIMUM AND 5.265 INCHES MAXIMUM IN
Body Outside Diameter6.000 INCHES MINIMUM AND 6.001 INCHES MAXIMUM IN
Body StylePLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5998-01-115-3933 INTERCHANGEABLE
Circuit Card Assembly
2815-01-327-64773901793 INTERCHANGEABLE
Pin,piston
Brinkley Technology Group Llc Dba Hercules Manufacturing
Cross-Reference Index
Part NumberManufacturer
66-7737US Aqua-Chem, Inc. (USA)
66A7736 Aqua-Chem, Inc. (USA)
066-07784-000 Aqua-Chem, Inc. (USA)
66-A-7781 Aqua-Chem, Inc. (USA)
66-7784 Aqua-Chem, Inc. (USA)
008-7329 Marine Diesel, Inc. Dba Marine Diesel (USA)
066-07784-000 PRIMARY Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
Related Parts
5998-01-115-3933INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
2815-01-327-6477INTERCHANGEABLE
PIN,PISTON
3901793

Frequently Asked Questions

What is NSN 4320-00-008-7329?

NSN 4320-00-008-7329 is a Ring,wearing, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-008-7329?

NSN 4320-00-008-7329 has 7 cross-referenced part numbers: 66-7737US (Aqua-Chem, Inc.), 66A7736 (Aqua-Chem, Inc.), 066-07784-000 (Aqua-Chem, Inc.), 66-A-7781 (Aqua-Chem, Inc.), 66-7784 (Aqua-Chem, Inc.) and 2 more.

What NSN replaces 4320-00-008-7329?

There are 2 known substitutes for 4320-00-008-7329: 5998-01-115-3933, 2815-01-327-6477. Verify interchangeability with system specifications before substitution.

What are the specifications of 066-07784-000?

Key specifications for 066-07784-000: Overall Length: 1.000 INCHES NOMINAL IN; Material: COPPER ALLOY; Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE; Corner Shape: SQUARE ALL CORNERS. 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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