PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

412.244O-Ring

Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc · NSN 5331-01-395-0839 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-395-0839 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-395-0839. Primary manufacturer part number: 412.244.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-395-0839, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersWebasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc (CAGE 44MG9); Webasto Thermosystems Inc (CAGE 62380)
Technical Specifications
ParameterValue
NSN5331-01-395-0839
Primary Part Number412.244
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerWebasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-964-5235 INTERCHANGEABLE
Screw,externally Relieved Body
5962-01-222-3905 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
412.244 PRIMARY Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc (USA)
412.244 Webasto Thermosystems Inc (USA)
Related Parts
5305-00-964-5235INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
5962-01-222-3905INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 5331-01-395-0839?

NSN 5331-01-395-0839 is a O-Ring, manufactured by Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-395-0839?

NSN 5331-01-395-0839 has 2 cross-referenced part numbers: 412.244 (Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc), 412.244 (Webasto Thermosystems Inc).

What NSN replaces 5331-01-395-0839?

There are 2 known substitutes for 5331-01-395-0839: 5305-00-964-5235, 5962-01-222-3905. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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