PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

870374Seal,plain Encased

Stillman Seal Corporation Div Stillman Seal Corperation · NSN 5330-01-425-0012 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-425-0012 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-425-0012. Primary manufacturer part number: 870374.
Features
  • Seal,plain Encased — FSC 5330
  • Seal Width: 0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
  • Case Style: SQUARE
  • Attachment Method: ROUND HOLE
  • Attachment Feature Quantity: 6
  • Accommodated Shaft Diameter: 2.341 INCHES NOMINAL IN
  • Material Document and Classification: MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
  • Attachment Hole Diameter: 0.323 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorosilicone Class Fq Sealing Element construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-01-425-0012, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stillman Seal Corporation Div Stillman Seal Corperation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-425-0012
Primary Part Number870374
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerStillman Seal Corporation Div Stillman Seal Corperation
StatusACTIVE
Seal Width0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
Case StyleSQUARE
Attachment MethodROUND HOLE
Attachment Feature Quantity6
Accommodated Shaft Diameter2.341 INCHES NOMINAL IN
Material Document and ClassificationMIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
Attachment Hole Diameter0.323 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
MaterialRUBBER FLUOROSILICONE CLASS FQ SEALING ELEMENT
MaterialALUMINUM ALLOY 6061 RETAINER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5985-00-069-3646 INTERCHANGEABLE
Antenna Element
6240-00-851-435210051850 INTERCHANGEABLE
Lamp,incandescent
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
17B6D1390-503 The Boeing Company (USA)
870374 PRIMARY Stillman Seal Corporation Div Stillman Seal Corperation (USA)
Related Parts
5985-00-069-3646INTERCHANGEABLE
ANTENNA ELEMENT
6240-00-851-4352INTERCHANGEABLE
LAMP,INCANDESCENT
10051850

Frequently Asked Questions

What is NSN 5330-01-425-0012?

NSN 5330-01-425-0012 is a Seal,plain Encased, manufactured by Stillman Seal Corporation Div Stillman Seal Corperation, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-425-0012?

NSN 5330-01-425-0012 has 2 cross-referenced part numbers: 17B6D1390-503 (The Boeing Company), 870374 (Stillman Seal Corporation Div Stillman Seal Corperation).

What NSN replaces 5330-01-425-0012?

There are 2 known substitutes for 5330-01-425-0012: 5985-00-069-3646, 6240-00-851-4352. Verify interchangeability with system specifications before substitution.

What are the specifications of 870374?

Key specifications for 870374: Seal Width: 0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN; Case Style: SQUARE; Attachment Method: ROUND HOLE; Attachment Feature Quantity: 6. 9 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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