PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1863Seal,plain Encased

Avox Systems Inc Dba Avox Systems Inc · NSN 5330-00-370-8440 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-370-8440 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-370-8440. Primary manufacturer part number: 1863.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: VERTICAL
  • Case Style: SQUARE
  • Housing Bore Diameter: 1.378 INCHES NOMINAL IN
  • Accommodated Shaft Diameter: 0.707 INCHES NOMINAL IN
  • Seal Width: 0.219 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-370-8440, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5330-00-370-8440
Primary Part Number1863
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusCANCELLED
Sealing Element StyleVERTICAL
Case StyleSQUARE
Housing Bore Diameter1.378 INCHES NOMINAL IN
Accommodated Shaft Diameter0.707 INCHES NOMINAL IN
Seal Width0.219 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6625-00-001-80601863-9700 INTERCHANGEABLE
Ohmmeter
Quadtech, Inc
4920-00-103-20961863 INTERCHANGEABLE
Test Set,electronic Systems
Thales Uk Limited Dba Thales Uk Ltd Avionics
5330-00-106-73201863 INTERCHANGEABLE
Packing,preformed
Tescom Corp Dba Tescom Div Tescom
5330-00-484-18141863 INTERCHANGEABLE
Packing,preformed
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
5950-00-645-1031774859 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-00-799-35641863 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ballantine Laboratories Inc
2530-01-194-6971 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
5895-01-305-7336174067-017 INTERCHANGEABLE
Interconnecting Box
L3harris Technologies, Inc. Dba Harris Corporation Div L3harris Technologies Inc Dba Harris Corporation
4310-01-351-59241863 INTERCHANGEABLE
Parts Kit,vacuum Pump
Thermal Engineering Co a Div of Sea Kay Co Inc
4820-01-516-03261863-00 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
1863-00 Avox Systems Inc Dba Avox Systems Inc (USA)
1863 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
6625-00-001-8060INTERCHANGEABLE
OHMMETER
1863-9700
4920-00-103-2096INTERCHANGEABLE
TEST SET,ELECTRONIC SYSTEMS
1863
5330-00-106-7320INTERCHANGEABLE
PACKING,PREFORMED
1863
5330-00-484-1814INTERCHANGEABLE
PACKING,PREFORMED
1863
5950-00-645-1031INTERCHANGEABLE
TRANSFORMER,POWER
774859
5905-00-799-3564INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
1863
2530-01-194-6971INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
5895-01-305-7336INTERCHANGEABLE
INTERCONNECTING BOX
174067-017
4310-01-351-5924INTERCHANGEABLE
PARTS KIT,VACUUM PUMP
1863
4820-01-516-0326INTERCHANGEABLE
SEAT,VALVE
1863-00
6515-01-544-6873INTERCHANGEABLE
MASK,RESPIRATOR
7000088726
6515-01-583-4457INTERCHANGEABLE
CABLE,OXYGEN SENSOR
1863

Frequently Asked Questions

What is NSN 5330-00-370-8440?

NSN 5330-00-370-8440 is a Seal,plain Encased, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-370-8440?

NSN 5330-00-370-8440 has 2 cross-referenced part numbers: 1863-00 (Avox Systems Inc Dba Avox Systems Inc), 1863 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 5330-00-370-8440?

There are 12 known substitutes for 5330-00-370-8440: 6625-00-001-8060, 4920-00-103-2096, 5330-00-106-7320 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1863?

Key specifications for 1863: Sealing Element Style: VERTICAL; Case Style: SQUARE; Housing Bore Diameter: 1.378 INCHES NOMINAL IN; Accommodated Shaft Diameter: 0.707 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-370-8440 still in active supply?

NSN 5330-00-370-8440 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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