PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66131-W-811Gasket

Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc · NSN 5330-01-491-3900 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-491-3900 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-491-3900. Primary manufacturer part number: 66131-W-811.
Features
  • Gasket — FSC 5330
  • 3 verified cross-references
  • Primary manufacturer: Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Gasket, cataloged under National Stock Number 5330-01-491-3900, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. 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.

Catalog Facts
Item NameGasket
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersMilwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (CAGE 76364)
Technical Specifications
ParameterValue
NSN5330-01-491-3900
Primary Part Number66131-W-811
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMilwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-291-9597TY 1, CL 1, GR C INTERCHANGEABLE
Cork and Rubber Sheet
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
66131-W-811 PRIMARY Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
1281-006 10 INCH ITEM 12 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
66131-W Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
Related Parts
5330-00-291-9597INTERCHANGEABLE
CORK AND RUBBER SHEET
TY 1, CL 1, GR C

Frequently Asked Questions

What is NSN 5330-01-491-3900?

NSN 5330-01-491-3900 is a Gasket, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-491-3900?

NSN 5330-01-491-3900 has 3 cross-referenced part numbers: 66131-W-811 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1281-006 10 INCH ITEM 12 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 66131-W (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).

What NSN replaces 5330-01-491-3900?

There is 1 known substitute for 5330-01-491-3900: 5330-00-291-9597. Verify interchangeability with system specifications before substitution.

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