PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40957Gasket,spiral Wound

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 5330-00-782-9441 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-782-9441 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-782-9441. Primary manufacturer part number: 40957.
Features
  • Gasket,spiral Wound — FSC 5330
  • Aperture Diameter: 1.687 INCHES NOMINAL1.687 INCHES NOMINAL IN
  • Style Designator: CIRCULAR
  • Material: ASBESTOS CHRYSOTILE AND STEEL COMP 347 SPIRAL WOUND FILLER
  • Outside Diameter: 2.437 INCHES NOMINAL2.437 INCHES NOMINAL IN
  • Surface Treatment: PASSIVATE SPIRAL WOUND FILLER
  • Cross-Sectional Thickness: 0.175 INCHES NOMINAL0.175 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: METAL WINDING W/ SOFT FILLERMETAL WINDING W/ SOFT FILLER
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Asbestos Chrysotile and Steel Comp 347 Spiral Wound Filler construction
General Description

The Gasket,spiral Wound, cataloged under National Stock Number 5330-00-782-9441, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-782-9441
Primary Part Number40957
Item NameGasket,spiral Wound
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Aperture Diameter1.687 INCHES NOMINAL1.687 INCHES NOMINAL IN
Style DesignatorCIRCULAR
MaterialASBESTOS CHRYSOTILE AND STEEL COMP 347 SPIRAL WOUND FILLER
Outside Diameter2.437 INCHES NOMINAL2.437 INCHES NOMINAL IN
Surface TreatmentPASSIVATE SPIRAL WOUND FILLER
Cross-Sectional Thickness0.175 INCHES NOMINAL0.175 INCHES NOMINAL IN
Cross-Sectional Shape StyleMETAL WINDING W/ SOFT FILLERMETAL WINDING W/ SOFT FILLER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-142-4358359S INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
2910-00-194-9947 INTERCHANGEABLE
Pump,fuel,cam Actuated
Cross-Reference Index
Part NumberManufacturer
40957 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
40957 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
MILG21032 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-00-142-4358INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
359S
2910-00-194-9947INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED

Frequently Asked Questions

What is NSN 5330-00-782-9441?

NSN 5330-00-782-9441 is a Gasket,spiral Wound, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-782-9441?

NSN 5330-00-782-9441 has 3 cross-referenced part numbers: 40957 (Leslie Controls, Inc. Dba Leslie Controls Inc), 40957 (Lineta Engineering Und Handelsgesell-Schaft Mbh), MILG21032 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5330-00-782-9441?

There are 2 known substitutes for 5330-00-782-9441: 3110-00-142-4358, 2910-00-194-9947. Verify interchangeability with system specifications before substitution.

What are the specifications of 40957?

Key specifications for 40957: Aperture Diameter: 1.687 INCHES NOMINAL1.687 INCHES NOMINAL IN; Style Designator: CIRCULAR; Material: ASBESTOS CHRYSOTILE AND STEEL COMP 347 SPIRAL WOUND FILLER; Outside Diameter: 2.437 INCHES NOMINAL2.437 INCHES NOMINAL IN. 7 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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