PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33S44375-2275Seal,plain Encased

Naval Ordnance Standards · NSN 5330-00-266-4758 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-266-4758 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-266-4758. Primary manufacturer part number: 33S44375-2275.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Material: STEEL CORROSION RESISTING CASE
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
  • Accommodated Shaft Diameter: 1.000 INCHES NOMINAL IN
  • Seal Width: 0.375 INCHES NOMINAL IN
  • Housing Bore Diameter: 1.500 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Corrosion Resisting Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-266-4758, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Ordnance Standards. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-266-4758
Primary Part Number33S44375-2275
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNaval Ordnance Standards
StatusCANCELLED
Case StyleSQUARE
MaterialSTEEL CORROSION RESISTING CASE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Diameter1.000 INCHES NOMINAL IN
Seal Width0.375 INCHES NOMINAL IN
Housing Bore Diameter1.500 INCHES NOMINAL IN
Sealing Element StyleANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5330-00-291-96371501M1 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
Cross-Reference Index
Part NumberManufacturer
33S44375-2275 Naval Ordnance Standards (USA)
Z33S44375-2275 Naval Ordnance Standards (USA)
18F682D25 Zf Industrieantriebe Witten Gmbh (DEU)
21159-0288 Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
Related Parts
5330-00-291-9637INTERCHANGEABLE
SEAL,PLAIN ENCASED
1501M1

Frequently Asked Questions

What is NSN 5330-00-266-4758?

NSN 5330-00-266-4758 is a Seal,plain Encased, manufactured by Naval Ordnance Standards, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-266-4758?

NSN 5330-00-266-4758 has 4 cross-referenced part numbers: 33S44375-2275 (Naval Ordnance Standards), Z33S44375-2275 (Naval Ordnance Standards), 18F682D25 (Zf Industrieantriebe Witten Gmbh), 21159-0288 (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc).

What NSN replaces 5330-00-266-4758?

There is 1 known substitute for 5330-00-266-4758: 5330-00-291-9637. Verify interchangeability with system specifications before substitution.

What are the specifications of 33S44375-2275?

Key specifications for 33S44375-2275: Case Style: SQUARE; Material: STEEL CORROSION RESISTING CASE; Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT; Material: RUBBER SYNTHETIC SEALING ELEMENT. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-266-4758 still in active supply?

NSN 5330-00-266-4758 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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