PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51434Seal Assembly,shaft,spring Loade

Rotary Vacuum Pumps Inc · NSN 4320-01-055-4399 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-055-4399 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-055-4399. Primary manufacturer part number: 51434.
Features
  • Seal Assembly,shaft,spring Loade — FSC 4320
  • General Characteristics Item Description: SHAFT SEAL,2.313 IN. LG,1.500 IN. DIA,ACCOM 0.875 IN. DIA. SHAFT IN
  • 1 verified cross-reference
  • Primary manufacturer: Rotary Vacuum Pumps Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Mechanical energy storage
  • Vibration dampening
General Description

The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-055-4399, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Rotary Vacuum Pumps Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-055-4399
Primary Part Number51434
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerRotary Vacuum Pumps Inc
StatusACTIVE
General Characteristics Item DescriptionSHAFT SEAL,2.313 IN. LG,1.500 IN. DIA,ACCOM 0.875 IN. DIA. SHAFT IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5136-00-156-3041 INTERCHANGEABLE
Chasers,thread Cutting
5110-00-293-02161280K INTERCHANGEABLE
Punch,cutting,single Bow
General Tools Manufacturing Co., Llc.
2530-00-734-9356 INTERCHANGEABLE
Rod Brake Asy
5985-01-433-4733ATT-0291-04-024-02 INTERCHANGEABLE
Attenuator,fixed
Cinch Connectivity Solutions Inc
5315-01-695-036851434 INTERCHANGEABLE
Pin,spring
Spirol International Corporation
Cross-Reference Index
Part NumberManufacturer
51434 PRIMARY Rotary Vacuum Pumps Inc (USA)
Related Parts
5136-00-156-3041INTERCHANGEABLE
CHASERS,THREAD CUTTING
5110-00-293-0216INTERCHANGEABLE
PUNCH,CUTTING,SINGLE BOW
1280K
2530-00-734-9356INTERCHANGEABLE
ROD BRAKE ASY
5985-01-433-4733INTERCHANGEABLE
ATTENUATOR,FIXED
ATT-0291-04-024-02
5315-01-695-0368INTERCHANGEABLE
PIN,SPRING
51434

Frequently Asked Questions

What is NSN 4320-01-055-4399?

NSN 4320-01-055-4399 is a Seal Assembly,shaft,spring Loade, manufactured by Rotary Vacuum Pumps Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-055-4399?

NSN 4320-01-055-4399 has 1 cross-referenced part number: 51434 (Rotary Vacuum Pumps Inc).

What NSN replaces 4320-01-055-4399?

There are 5 known substitutes for 4320-01-055-4399: 5136-00-156-3041, 5110-00-293-0216, 2530-00-734-9356 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51434?

Key specifications for 51434: General Characteristics Item Description: SHAFT SEAL,2.313 IN. LG,1.500 IN. DIA,ACCOM 0.875 IN. DIA. SHAFT IN. 1 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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