PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18D212Gasket

Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc · NSN 5330-00-171-3553 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-171-3553 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-171-3553. Primary manufacturer part number: 18D212.
Features
  • Gasket — FSC 5330
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • Bolt Circle Diameter: 3.312 INCHES NOMINAL IN
  • Material: PAPER AND GLUE AND GLYCERIN OVERALL
  • Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN
  • Side Radius From Gasket Center: 1.406 INCHES NOMINAL IN
  • Material Document and Classification: HH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Outside Corner Radius: 0.500 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Paper and Glue and Glycerin Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-171-3553, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-171-3553
Primary Part Number18D212
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc
StatusCANCELLED
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Bolt Circle Diameter3.312 INCHES NOMINAL IN
MaterialPAPER AND GLUE AND GLYCERIN OVERALL
Cross-Sectional Thickness0.031 INCHES NOMINAL IN
Side Radius From Gasket Center1.406 INCHES NOMINAL IN
Material Document and ClassificationHH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
Outside Corner Radius0.500 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR
Aperture Diameter2.125 INCHES NOMINAL IN
Bolt Hole Quantity2
Hole Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5330-00-077-25534239 INTERCHANGEABLE
Seal,plain Encased
Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division
2805-00-173-23604004239-2 INTERCHANGEABLE
Insert,valve Seat
Agco Corp Parts Opn
3110-00-227-3252 INTERCHANGEABLE
Bearing,roller,needle
5935-00-258-46604239 INTERCHANGEABLE
Connector,receptacle,electrical
Hobart Bros Co
6515-00-654-57494239 INTERCHANGEABLE
Mask,surgical
Johnson and Johnson Medical Inc Sub of Johnson and Johnson
5330-00-901-11734239 INTERCHANGEABLE
Seal,plain Encased
Freudenberg-Nok General Partnership Dba Fredenberg-Nok Seals Division
3040-01-016-0384 INTERCHANGEABLE
Shaft,straight
4920-01-086-1862P11686 INTERCHANGEABLE
Glass,sight Indicating
Aerosonic Llc
5136-01-431-1629 INTERCHANGEABLE
Die,thread Cutting
Cross-Reference Index
Part NumberManufacturer
18D212 PRIMARY Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc (USA)
P11686 Cooper Cameron Corp Ajax-Superior Div (USA)
P11686 PRIMARY Steego Corp (USA)
4239 Cooper Cameron Corp Ajax-Superior Div (USA)
P11686 Sterling Engine Co Inc (USA)
Related Parts
5330-00-077-2553INTERCHANGEABLE
SEAL,PLAIN ENCASED
4239
2805-00-173-2360INTERCHANGEABLE
INSERT,VALVE SEAT
4004239-2
3110-00-227-3252INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
5935-00-258-4660INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
4239
6515-00-654-5749INTERCHANGEABLE
MASK,SURGICAL
4239
5330-00-901-1173INTERCHANGEABLE
SEAL,PLAIN ENCASED
4239
3040-01-016-0384INTERCHANGEABLE
SHAFT,STRAIGHT
4920-01-086-1862INTERCHANGEABLE
GLASS,SIGHT INDICATING
P11686
5136-01-431-1629INTERCHANGEABLE
DIE,THREAD CUTTING

Frequently Asked Questions

What is NSN 5330-00-171-3553?

NSN 5330-00-171-3553 is a Gasket, manufactured by Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-171-3553?

NSN 5330-00-171-3553 has 5 cross-referenced part numbers: 18D212 (Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc), P11686 (Cooper Cameron Corp Ajax-Superior Div), P11686 (Steego Corp), 4239 (Cooper Cameron Corp Ajax-Superior Div), P11686 (Sterling Engine Co Inc).

What NSN replaces 5330-00-171-3553?

There are 9 known substitutes for 5330-00-171-3553: 5330-00-077-2553, 2805-00-173-2360, 3110-00-227-3252 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18D212?

Key specifications for 18D212: Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Bolt Circle Diameter: 3.312 INCHES NOMINAL IN; Material: PAPER AND GLUE AND GLYCERIN OVERALL; Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-171-3553 still in active supply?

NSN 5330-00-171-3553 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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