PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4903-5Ring,hub Seal

Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel · NSN 3930-00-136-5071 · FSC 3930 · No Item Name Available
Verified by PartsTable
NSN 3930-00-136-5071 — this item is cataloged by the U.S. Government under National Stock Number 3930-00-136-5071. Primary manufacturer part number: 4903-5.
Features
  • Ring,hub Seal — FSC 3930
  • General Characteristics Item Description: BRASS MATERIAL;3.938 IN. OD 3.572 IN. ID 0.215 IN. W 0.173 IN. THK;OUTER EDGE ANGLED 47 DEG INNER EDGE ANGLED 36 DEG IN
  • 3 verified cross-references
  • Primary manufacturer: Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Ring,hub Seal, cataloged under National Stock Number 3930-00-136-5071, is classified within Federal Supply Class 3930 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3930-00-136-5071
Primary Part Number4903-5
Item NameRing,hub Seal
FSC / FSG3930 / 39 — No Item Name Available
ManufacturerLandoll Corporation Dba Landoll Corporation Drexel Division Div Drexel
StatusACTIVE
General Characteristics Item DescriptionBRASS MATERIAL;3.938 IN. OD 3.572 IN. ID 0.215 IN. W 0.173 IN. THK;OUTER EDGE ANGLED 47 DEG INNER EDGE ANGLED 36 DEG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3030-00-148-5070925-01-011-2213 INTERCHANGEABLE
Belt,v
Delta Intl Machinery Corp
5330-00-178-5134300128 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5307-01-123-052849035 INTERCHANGEABLE
Stud,plain
Sabre Engines Ltd
6685-01-688-322149035 INTERCHANGEABLE
Indicator,pressure
Ritchie Engineering Co Inc
Cross-Reference Index
Part NumberManufacturer
4903-5 Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel (USA)
431034 Micro-Precision Operations (USA)
431034 Vibratech Inc (USA)
Related Parts
3030-00-148-5070INTERCHANGEABLE
BELT,V
925-01-011-2213
5330-00-178-5134INTERCHANGEABLE
SEAL,PLAIN ENCASED
300128
5307-01-123-0528INTERCHANGEABLE
STUD,PLAIN
49035
6685-01-688-3221INTERCHANGEABLE
INDICATOR,PRESSURE
49035

Frequently Asked Questions

What is NSN 3930-00-136-5071?

NSN 3930-00-136-5071 is a Ring,hub Seal, manufactured by Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel, classified under FSC 3930 (No Item Name Available). Status: active.

What are the part numbers for NSN 3930-00-136-5071?

NSN 3930-00-136-5071 has 3 cross-referenced part numbers: 4903-5 (Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel), 431034 (Micro-Precision Operations), 431034 (Vibratech Inc).

What NSN replaces 3930-00-136-5071?

There are 4 known substitutes for 3930-00-136-5071: 3030-00-148-5070, 5330-00-178-5134, 5307-01-123-0528 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4903-5?

Key specifications for 4903-5: General Characteristics Item Description: BRASS MATERIAL;3.938 IN. OD 3.572 IN. ID 0.215 IN. W 0.173 IN. THK;OUTER EDGE ANGLED 47 DEG INNER EDGE ANGLED 36 DEG IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com