PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51001-11-2Seal,plain Encased

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5330-00-413-6426 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-413-6426 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-413-6426. Primary manufacturer part number: MS51001-11-2.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: ANGULAR
  • Seal Width: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
  • Surface Treatment: ZINC AND CHROMATE OR CADMIUM AND CHROMATE CASE
  • Accommodated Shaft Diameter: 0.875 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
  • Housing Bore Diameter: 1.250 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-413-6426, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-413-6426
Primary Part NumberMS51001-11-2
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Sealing Element StyleANGULAR
Seal Width0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
Surface TreatmentZINC AND CHROMATE OR CADMIUM AND CHROMATE CASE
Accommodated Shaft Diameter0.875 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
Housing Bore Diameter1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-020-0205 INTERCHANGEABLE
Seal,plain Encased
5330-00-143-9666 INTERCHANGEABLE
Seal,plain Encased
5330-00-781-4525 INTERCHANGEABLE
Seal,plain Encased
5330-00-828-8522 INTERCHANGEABLE
Seal,plain Encased
5330-00-846-9838 INTERCHANGEABLE
Seal,plain Encased
5330-00-928-0302 INTERCHANGEABLE
Seal,plain Encased
5330-00-928-0303 INTERCHANGEABLE
Seal,plain
5330-00-935-9225 INTERCHANGEABLE
Seal,plain Encased
5330-01-038-4802 INTERCHANGEABLE
Seal,plain Encased
5330-01-135-4173 INTERCHANGEABLE
Seal,plain Encased
Cross-Reference Index
Part NumberManufacturer
MS51001-11-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A-A-52524/13 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA52524/13-11-2 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5330-00-020-0205INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-143-9666INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-781-4525INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-828-8522INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-846-9838INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-928-0302INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-928-0303INTERCHANGEABLE
SEAL,PLAIN
5330-00-935-9225INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-01-038-4802INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-01-135-4173INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-01-498-0176INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-01-572-0655INTERCHANGEABLE
SEAL,PLAIN ENCASED

Frequently Asked Questions

What is NSN 5330-00-413-6426?

NSN 5330-00-413-6426 is a Seal,plain Encased, manufactured by Military Standards Promulgated by Military Departments 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 5330-00-413-6426?

NSN 5330-00-413-6426 has 3 cross-referenced part numbers: MS51001-11-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A-A-52524/13 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA52524/13-11-2 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 5330-00-413-6426?

There are 12 known substitutes for 5330-00-413-6426: 5330-00-020-0205, 5330-00-143-9666, 5330-00-781-4525 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51001-11-2?

Key specifications for MS51001-11-2: Sealing Element Style: ANGULAR; Seal Width: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Surface Treatment: ZINC AND CHROMATE OR CADMIUM AND CHROMATE CASE; Accommodated Shaft Diameter: 0.875 INCHES NOMINAL IN. 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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