PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-P-17577Packing Assembly

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5330-01-121-8546 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-121-8546 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-121-8546. Primary manufacturer part number: MIL-P-17577.
Features
  • Packing Assembly — FSC 5330
  • Cross-Sectional Shape Style: SQUARE/RECTANGULAR INTERMEDIATE RING
  • Material: ASBESTOS CHRYSOTILE AND GRAPHITE AND COPPER ALLOY BOTTOM RING
  • Inside Diameter: 0.750 INCHES NOMINAL IN
  • Criticality Code Justification: ZZZY
  • Test Data Document: 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Special Test Features: SPECIAL QUALITY CONTROL TESTING
  • Outside Diameter: 1.125 INCHES NOMINAL IN
Applications
  • Applications requiring Asbestos Chrysotile and Graphite and Copper Alloy Bottom Ring construction
General Description

The Packing Assembly, cataloged under National Stock Number 5330-01-121-8546, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-121-8546
Primary Part NumberMIL-P-17577
Item NamePacking Assembly
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Cross-Sectional Shape StyleSQUARE/RECTANGULAR INTERMEDIATE RING
MaterialASBESTOS CHRYSOTILE AND GRAPHITE AND COPPER ALLOY BOTTOM RING
Inside Diameter0.750 INCHES NOMINAL IN
Criticality Code JustificationZZZY
Test Data Document81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Special Test FeaturesSPECIAL QUALITY CONTROL TESTING
Outside Diameter1.125 INCHES NOMINAL IN
Cross-Sectional Shape StyleSQUARE/RECTANGULAR TOP RING
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
MaterialASBESTOS CHRYSOTILE AND GRAPHITE AND COPPER ALLOY TOP RING
Material Document and ClassificationHH-P-34 TY 2 FED SPEC SINGLE MATERIAL RESPONSE BOTH SIDES
Intermediate Ring Quantity3
Material Document and ClassificationHH-P-34 TY 2 FED SPEC SINGLE MATERIAL RESPONSE INTERMEDIATE RING
Nondefinitive Spec/std Data2 TYPE
MaterialASBESTOS CHRYSOTILE AND GRAPHITE AND COPPER ALLOY INTERMEDIATE RING
Height0.940 INCHES NOMINAL IN
Cross-Sectional Shape StyleSQUARE/RECTANGULAR BOTTOM RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-197-8535 INTERCHANGEABLE
Packing Material
Cross-Reference Index
Part NumberManufacturer
MIL-P-17577 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H-3295808 PIECE 14 Naval Sea Systems Command (USA)
29828 PIECE 14 Crane Co Div Valve Div (USA)
Related Parts
5330-00-197-8535INTERCHANGEABLE
PACKING MATERIAL

Frequently Asked Questions

What is NSN 5330-01-121-8546?

NSN 5330-01-121-8546 is a Packing Assembly, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-121-8546?

NSN 5330-01-121-8546 has 3 cross-referenced part numbers: MIL-P-17577 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H-3295808 PIECE 14 (Naval Sea Systems Command), 29828 PIECE 14 (Crane Co Div Valve Div).

What NSN replaces 5330-01-121-8546?

There is 1 known substitute for 5330-01-121-8546: 5330-00-197-8535. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-P-17577?

Key specifications for MIL-P-17577: Cross-Sectional Shape Style: SQUARE/RECTANGULAR INTERMEDIATE RING; Material: ASBESTOS CHRYSOTILE AND GRAPHITE AND COPPER ALLOY BOTTOM RING; Inside Diameter: 0.750 INCHES NOMINAL IN; Criticality Code Justification: ZZZY. 17 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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