PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78039Seal,drain

Williams International Co., L.l.c. · NSN 9999-01-690-4609 · FSC 9999 · No Item Name Available
Verified by PartsTable
NSN 9999-01-690-4609 — this item is cataloged by the U.S. Government under National Stock Number 9999-01-690-4609. Primary manufacturer part number: 78039.
Features
  • Seal,drain — FSC 9999
  • 1 verified cross-reference
  • Primary manufacturer: Williams International Co., L.l.c.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,drain, cataloged under National Stock Number 9999-01-690-4609, is classified within Federal Supply Class 9999 (No Item Name Available) of the Miscellaneous group. The primary manufacturer of record is Williams International Co., L.l.c.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeal,drain
FSC / FSG9999 — No Item Name Available (FSG 99)
ManufacturersWilliams International Co., L.l.c. (CAGE 24235)
Technical Specifications
ParameterValue
NSN9999-01-690-4609
Primary Part Number78039
Item NameSeal,drain
FSC / FSG9999 / 99 — No Item Name Available
ManufacturerWilliams International Co., L.l.c.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-156-481510042 INTERCHANGEABLE
Bearing,ball,annular
Black and Decker Us Inc
3110-00-198-0272 INTERCHANGEABLE
Bearing,ball,annular
4310-00-592-041678039 INTERCHANGEABLE
Ring,piston
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
4710-01-147-8026 INTERCHANGEABLE
Tube Assembly,metal
7240-01-568-9717 INTERCHANGEABLE
Funnel
7240-01-574-3153 INTERCHANGEABLE
Funnel
Cross-Reference Index
Part NumberManufacturer
78039 PRIMARY Williams International Co., L.l.c. (USA)
Related Parts
3110-00-156-4815INTERCHANGEABLE
BEARING,BALL,ANNULAR
10042
3110-00-198-0272INTERCHANGEABLE
BEARING,BALL,ANNULAR
4310-00-592-0416INTERCHANGEABLE
RING,PISTON
78039
4710-01-147-8026INTERCHANGEABLE
TUBE ASSEMBLY,METAL
7240-01-568-9717INTERCHANGEABLE
FUNNEL
7240-01-574-3153INTERCHANGEABLE
FUNNEL

Frequently Asked Questions

What is NSN 9999-01-690-4609?

NSN 9999-01-690-4609 is a Seal,drain, manufactured by Williams International Co., L.l.c., classified under FSC 9999 (No Item Name Available). Status: active.

What are the part numbers for NSN 9999-01-690-4609?

NSN 9999-01-690-4609 has 1 cross-referenced part number: 78039 (Williams International Co., L.l.c.).

What NSN replaces 9999-01-690-4609?

There are 6 known substitutes for 9999-01-690-4609: 3110-00-156-4815, 3110-00-198-0272, 4310-00-592-0416 and 3 more. Verify interchangeability with system specifications before substitution.

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