PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31185Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-702-5522 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-702-5522 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-702-5522. Primary manufacturer part number: 31185.
Features
  • Seal,plain Encased — FSC 5330
  • Sealing Element Style: VERTICAL-ANGULAR
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Accommodated Shaft Diameter: 3.125 INCHES NOMINAL IN
  • Surface Treatment: PLASTIC CASE
  • Material: RUBBER SYNTHETIC SEALING ELEMENT A
  • Material: STEEL CASE
  • Housing Bore Diameter: 4.125 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-702-5522, 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. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-702-5522
Primary Part Number31185
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
Sealing Element StyleVERTICAL-ANGULAR
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Accommodated Shaft Diameter3.125 INCHES NOMINAL IN
Surface TreatmentPLASTIC CASE
MaterialRUBBER SYNTHETIC SEALING ELEMENT A
MaterialSTEEL CASE
Housing Bore Diameter4.125 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT B
Outside Diameter4.130 INCHES NOMINAL IN
Case StyleSQUARE
Seal Width0.433 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-187-153110453-4 INTERCHANGEABLE
Gasket
Cummins Inc.
5136-00-189-3219402316 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
5330-00-485-434031185 INTERCHANGEABLE
Gasket
Kidde Inc Walter Kidde Div
1630-00-730-01263-1185 INTERCHANGEABLE
Wheel,landing Gear
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
5307-01-178-1435431185001 INTERCHANGEABLE
Stud
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5940-01-443-6258137324 INTERCHANGEABLE
Terminal,lug
Dictaphone Corporation
6145-01-518-057431185-015 INTERCHANGEABLE
Cable,power,electrical
Anacom Inc
Cross-Reference Index
Part NumberManufacturer
457997-1 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
31172 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
CRSA Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
412BM34T8 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
31185 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
31185CR Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
5330-00-187-1531INTERCHANGEABLE
GASKET
10453-4
5136-00-189-3219INTERCHANGEABLE
DIE,THREAD CUTTING
402316
5330-00-485-4340INTERCHANGEABLE
GASKET
31185
1630-00-730-0126INTERCHANGEABLE
WHEEL,LANDING GEAR
3-1185
5307-01-178-1435INTERCHANGEABLE
STUD
431185001
5940-01-443-6258INTERCHANGEABLE
TERMINAL,LUG
137324
6145-01-518-0574INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
31185-015

Frequently Asked Questions

What is NSN 5330-00-702-5522?

NSN 5330-00-702-5522 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 5330-00-702-5522?

NSN 5330-00-702-5522 has 6 cross-referenced part numbers: 457997-1 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 31172 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), CRSA (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 412BM34T8 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 31185 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions) and 1 more.

What NSN replaces 5330-00-702-5522?

There are 7 known substitutes for 5330-00-702-5522: 5330-00-187-1531, 5136-00-189-3219, 5330-00-485-4340 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31185?

Key specifications for 31185: Sealing Element Style: VERTICAL-ANGULAR; Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT; Accommodated Shaft Diameter: 3.125 INCHES NOMINAL IN; Surface Treatment: PLASTIC CASE. 11 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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