PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21537004-2 ITEM 15Seal,plain

Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating · NSN 5330-01-551-6351 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-551-6351 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-551-6351. Primary manufacturer part number: 21537004-2 ITEM 15.
Features
  • Seal,plain — FSC 5330
  • Material: RUBBER NEOPRENE SEALING ELEMENT
  • 3 verified cross-references
  • Primary manufacturer: Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Neoprene Sealing Element construction
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-551-6351, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-551-6351
Primary Part Number21537004-2 ITEM 15
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating
StatusACTIVE
MaterialRUBBER NEOPRENE SEALING ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4220-01-285-8195 INTERCHANGEABLE
Gage,depth and Pressure Diver's
Cross-Reference Index
Part NumberManufacturer
21537004-2 ITEM 15 Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
741200 Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
21537004-1 ITEM 15 Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
Related Parts
4220-01-285-8195INTERCHANGEABLE
GAGE,DEPTH AND PRESSURE DIVER'S

Frequently Asked Questions

What is NSN 5330-01-551-6351?

NSN 5330-01-551-6351 is a Seal,plain, manufactured by Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-551-6351?

NSN 5330-01-551-6351 has 3 cross-referenced part numbers: 21537004-2 ITEM 15 (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating), 741200 (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating), 21537004-1 ITEM 15 (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating).

What NSN replaces 5330-01-551-6351?

There is 1 known substitute for 5330-01-551-6351: 4220-01-285-8195. Verify interchangeability with system specifications before substitution.

What are the specifications of 21537004-2 ITEM 15?

Key specifications for 21537004-2 ITEM 15: End Item Identification: DAMPER MODEL VC413M; Part Name Assigned by Controlling Agency: EPT WEDGE DAMPER SEAL; Material: RUBBER NEOPRENE SEALING ELEMENT; Special Features: NEOPRENE BASE, 5/16" X 3/4". 4 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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