PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21795DSeal,plain Encased

Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ · NSN 5330-00-641-0978 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-641-0978 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-641-0978. Primary manufacturer part number: 21795D.
Features
  • Seal,plain Encased — FSC 5330
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Case Style: SQUARE
  • Seal Width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
  • Material: STEEL CASE
  • Housing Bore Diameter: 2.996 INCHES NOMINAL IN
  • Material: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
  • Accommodated Shaft Diameter: 1.938 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-641-0978, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-641-0978
Primary Part Number21795D
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNavistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
StatusACTIVE
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Case StyleSQUARE
Seal Width0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
MaterialSTEEL CASE
Housing Bore Diameter2.996 INCHES NOMINAL IN
MaterialLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Diameter1.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5930-00-102-595150145 INTERCHANGEABLE
Capillary Bulb Clam
Wells Mfg Co
5985-00-229-7988SMA571571-1 INTERCHANGEABLE
Attenuator,variable
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3455-00-455-5435 INTERCHANGEABLE
File,rotary
5940-00-688-6010 INTERCHANGEABLE
Terminal,lug
4820-01-232-474830145 INTERCHANGEABLE
Valve,expansion
Wilshire Corp
6150-01-471-720150145 INTERCHANGEABLE
Lead,electrical
American Apex Corporation
Cross-Reference Index
Part NumberManufacturer
21795D PRIMARY Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
5330-233000 Chief of Engineers Dept of Army (USA)
50145 Blaw Knox Corp Blaw-Knox Equipment Div (USA)
299130 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
1134 Terex Usa, Llc Dba Terex Equipment Services (USA)
21795D Navistar International Corporation Dba Navistar (USA)
Related Parts
5930-00-102-5951INTERCHANGEABLE
CAPILLARY BULB CLAM
50145
5985-00-229-7988INTERCHANGEABLE
ATTENUATOR,VARIABLE
SMA571571-1
3455-00-455-5435INTERCHANGEABLE
FILE,ROTARY
5940-00-688-6010INTERCHANGEABLE
TERMINAL,LUG
4820-01-232-4748INTERCHANGEABLE
VALVE,EXPANSION
30145
6150-01-471-7201INTERCHANGEABLE
LEAD,ELECTRICAL
50145

Frequently Asked Questions

What is NSN 5330-00-641-0978?

NSN 5330-00-641-0978 is a Seal,plain Encased, manufactured by Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-641-0978?

NSN 5330-00-641-0978 has 6 cross-referenced part numbers: 21795D (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 5330-233000 (Chief of Engineers Dept of Army), 50145 (Blaw Knox Corp Blaw-Knox Equipment Div), 299130 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 1134 (Terex Usa, Llc Dba Terex Equipment Services) and 1 more.

What NSN replaces 5330-00-641-0978?

There are 6 known substitutes for 5330-00-641-0978: 5930-00-102-5951, 5985-00-229-7988, 3455-00-455-5435 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21795D?

Key specifications for 21795D: Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT; Case Style: SQUARE; Seal Width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN; Material: STEEL CASE. 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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