PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5521Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-01-676-3158 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-676-3158 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-676-3158. Primary manufacturer part number: 5521.
Features
  • Seal,plain Encased — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-01-676-3158, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Skf Usa Inc. Dba Skf Aerospace Sealing Solutions. This item has 1 commercial cross-reference 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: Active.

Technical Specifications
ParameterValue
NSN5330-01-676-3158
Primary Part Number5521
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-04962X627B INTERCHANGEABLE
Cup,tapered Roller Bearing
Napco International Llc Dba Napco International Inc
5975-00-100-8759 INTERCHANGEABLE
Box Connector,electrical
5330-00-290-1168335216 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5962-00-469-47615521 INTERCHANGEABLE
Microcircuit,linear
Satcon Electronics Custom Hybrid Products Div
5935-00-502-6234552-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
2920-00-594-241555-21 INTERCHANGEABLE
Lead,ignition,engine
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
6505-00-684-8737 INTERCHANGEABLE
Penicillin G Procaine Suspension
6645-00-868-12466800791 INTERCHANGEABLE
Timer,sequential
Hoyt Corporation
5915-01-138-0649119-1029-00 INTERCHANGEABLE
Filter,band Pass
Tektronix, Inc.
4820-01-328-65075521 INTERCHANGEABLE
Valve,gate
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
5521 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
3110-00-100-0496INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
2X627B
5975-00-100-8759INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5330-00-290-1168INTERCHANGEABLE
SEAL,PLAIN ENCASED
335216
5962-00-469-4761INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5521
5935-00-502-6234INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
552-1
2920-00-594-2415INTERCHANGEABLE
LEAD,IGNITION,ENGINE
55-21
6505-00-684-8737INTERCHANGEABLE
PENICILLIN G PROCAINE SUSPENSION
6645-00-868-1246INTERCHANGEABLE
TIMER,SEQUENTIAL
6800791
5915-01-138-0649INTERCHANGEABLE
FILTER,BAND PASS
119-1029-00
4820-01-328-6507INTERCHANGEABLE
VALVE,GATE
5521
5365-01-355-5182INTERCHANGEABLE
SPACER,SLEEVE
233816
5999-01-581-8681INTERCHANGEABLE
CLIP,ELECTRICAL

Frequently Asked Questions

What is NSN 5330-01-676-3158?

NSN 5330-01-676-3158 is a Seal,plain Encased, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-676-3158?

NSN 5330-01-676-3158 has 1 cross-referenced part number: 5521 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-01-676-3158?

There are 12 known substitutes for 5330-01-676-3158: 3110-00-100-0496, 5975-00-100-8759, 5330-00-290-1168 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5521?

Key specifications for 5521: Part Name Assigned by Controlling Agency: SEAL,MULTIPURPOSE. 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