PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

255-4-2Gasket

Electro Switch Corp. Dba Electro Switch Corp · NSN 5330-01-251-0792 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-251-0792 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-251-0792. Primary manufacturer part number: 255-4-2.
Features
  • Gasket — FSC 5330
  • Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL OVERALL
  • Bolt Hole Quantity: 24
  • Material: RUBBER SILICONE CLASS Q OVERALL
  • Outside Edge to Bolt Hole Center Distance Along Length: 0.300 INCHES NOMINAL IN
  • Hole Diameter: 0.220 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Outside Corner Radius: 0.125 INCHES NOMINAL IN
  • Outside Edge to Bolt Hole Center Distance Along Width: 0.290 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Class Q Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-251-0792, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Electro Switch Corp. Dba Electro Switch Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-251-0792
Primary Part Number255-4-2
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerElectro Switch Corp. Dba Electro Switch Corp
StatusACTIVE
Hardness Rating70.0 SHORE DUROMETER A NOMINAL OVERALL
Bolt Hole Quantity24
MaterialRUBBER SILICONE CLASS Q OVERALL
Outside Edge to Bolt Hole Center Distance Along Length0.300 INCHES NOMINAL IN
Hole Diameter0.220 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outside Corner Radius0.125 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Width0.290 INCHES NOMINAL IN
Inside Corner Radius0.125 INCHES NOMINAL IN
Aperture Width6.560 INCHES NOMINAL IN
Aperture Length7.560 INCHES NOMINAL IN
Cross-Sectional Thickness0.062 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5365-01-014-308025542 INTERCHANGEABLE
Spacer,ring
Williams International Co., L.l.c.
3120-01-037-923225542 INTERCHANGEABLE
Bearing,connecting
Jetstream of Houston, Llp Dba Jetstream of Houston Llp
3120-01-270-8939 INTERCHANGEABLE
Bearing,washer,thrust
Cross-Reference Index
Part NumberManufacturer
255-4-2 PRIMARY Electro Switch Corp. Dba Electro Switch Corp (USA)
803-5002895-143 Naval Sea Systems Command (USA)
Related Parts
5365-01-014-3080INTERCHANGEABLE
SPACER,RING
25542
3120-01-037-9232INTERCHANGEABLE
BEARING,CONNECTING
25542
3120-01-270-8939INTERCHANGEABLE
BEARING,WASHER,THRUST

Frequently Asked Questions

What is NSN 5330-01-251-0792?

NSN 5330-01-251-0792 is a Gasket, manufactured by Electro Switch Corp. Dba Electro Switch Corp, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-251-0792?

NSN 5330-01-251-0792 has 2 cross-referenced part numbers: 255-4-2 (Electro Switch Corp. Dba Electro Switch Corp), 803-5002895-143 (Naval Sea Systems Command).

What NSN replaces 5330-01-251-0792?

There are 3 known substitutes for 5330-01-251-0792: 5365-01-014-3080, 3120-01-037-9232, 3120-01-270-8939. Verify interchangeability with system specifications before substitution.

What are the specifications of 255-4-2?

Key specifications for 255-4-2: Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL OVERALL; Bolt Hole Quantity: 24; Material: RUBBER SILICONE CLASS Q OVERALL; Outside Edge to Bolt Hole Center Distance Along Length: 0.300 INCHES NOMINAL IN. 15 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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