PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SF1708Seal,plain Encased

American Standard Inc Westinghouse Air Brake Co Div · NSN 5330-00-640-9140 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-640-9140 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-640-9140. Primary manufacturer part number: SF1708.
Features
  • Seal,plain Encased — FSC 5330
  • Seal Width: 0.625 INCHES NOMINAL IN
  • Surface Treatment: PLASTIC CASE
  • Housing Bore Diameter: 6.499 INCHES NOMINAL IN
  • Outside Diameter: 6.506 INCHES NOMINAL IN
  • Material: LEATHER SEALING ELEMENT
  • Material: STEEL CASE
  • Sealing Element Style: ANGULAR
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Leather Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-640-9140, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American Standard Inc Westinghouse Air Brake Co Div. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-640-9140
Primary Part NumberSF1708
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerAmerican Standard Inc Westinghouse Air Brake Co Div
StatusCANCELLED
Seal Width0.625 INCHES NOMINAL IN
Surface TreatmentPLASTIC CASE
Housing Bore Diameter6.499 INCHES NOMINAL IN
Outside Diameter6.506 INCHES NOMINAL IN
MaterialLEATHER SEALING ELEMENT
MaterialSTEEL CASE
Sealing Element StyleANGULAR
Case StyleSQUARE
Accommodated Shaft Diameter5.250 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-016-7582 INTERCHANGEABLE
Contact Positioner,terminal Crim
9905-00-219-282452488 INTERCHANGEABLE
Plate,designation
Eaton Aerospace, Llc Dba Jackson South
5330-00-251-323155104 INTERCHANGEABLE
Gasket
H20 Tank Inc U S Motors Div
5360-00-260-6666858272 INTERCHANGEABLE
Spring,helical,compression
Dana Off Highway Products, Llc
5310-00-317-07655/8 LOCKWASHER INTERCHANGEABLE
Washer,lock
Drc Acquisition Inc
5306-00-354-1673 INTERCHANGEABLE
Bolt,externally Relieved Body
4710-00-435-926555-104 INTERCHANGEABLE
Tube,calibration,vacuum
Teledyne Instruments, Inc. Dba Teledyne Hastings Instruments Div Teledyne Hastings Instruments
1270-00-546-2455L5-8 INTERCHANGEABLE
Clamp Assembly,split
Roller Bearing Co of America, Inc Div Pic Design
5310-00-695-358755104 INTERCHANGEABLE
Washer,nonmetallic
Malabar
5310-00-820-6653MS35338-50 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
SF1708 American Standard Inc Westinghouse Air Brake Co Div (USA)
55104 Dresser/marion Div (USA)
65058 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
TM527 Scott Huber Essick a Co of Figgie International Inc (USA)
52488 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
33S44150-4840 Naval Ordnance Standards (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
55104 Federal-Mogul Corp Government Sales Dept (USA)
3960243 Jlg Industries Inc (USA)
L58 American Standard Inc Westinghouse Air Brake Co Div (USA)
Related Parts
5120-00-016-7582INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
9905-00-219-2824INTERCHANGEABLE
PLATE,DESIGNATION
52488
5330-00-251-3231INTERCHANGEABLE
GASKET
55104
5360-00-260-6666INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
858272
5310-00-317-0765INTERCHANGEABLE
WASHER,LOCK
5/8 LOCKWASHER
5306-00-354-1673INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
4710-00-435-9265INTERCHANGEABLE
TUBE,CALIBRATION,VACUUM
55-104
1270-00-546-2455INTERCHANGEABLE
CLAMP ASSEMBLY,SPLIT
L5-8
5310-00-695-3587INTERCHANGEABLE
WASHER,NONMETALLIC
55104
5310-00-820-6653INTERCHANGEABLE
WASHER,LOCK
MS35338-50
2530-01-249-5548INTERCHANGEABLE
WEIGHT,WHEEL BALANCING
5995-01-332-1762INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
55104

Frequently Asked Questions

What is NSN 5330-00-640-9140?

NSN 5330-00-640-9140 is a Seal,plain Encased, manufactured by American Standard Inc Westinghouse Air Brake Co Div, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-640-9140?

NSN 5330-00-640-9140 has 10 cross-referenced part numbers: SF1708 (American Standard Inc Westinghouse Air Brake Co Div), 55104 (Dresser/marion Div), 65058 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), TM527 (Scott Huber Essick a Co of Figgie International Inc), 52488 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions) and 5 more.

What NSN replaces 5330-00-640-9140?

There are 12 known substitutes for 5330-00-640-9140: 5120-00-016-7582, 9905-00-219-2824, 5330-00-251-3231 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SF1708?

Key specifications for SF1708: Seal Width: 0.625 INCHES NOMINAL IN; Surface Treatment: PLASTIC CASE; Housing Bore Diameter: 6.499 INCHES NOMINAL IN; Outside Diameter: 6.506 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-640-9140 still in active supply?

NSN 5330-00-640-9140 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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