PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 803-841218
803-841218 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET,SPIRAL WOUND is a the manufacturer industrial component. Key specifications include outside_diameter: 4.173 INCHES NOMINAL IN, special_features: CLASS 1, SERIES 1500, aperture_diameter: 3.626 INCHES MINIMUM AND 3.656 INCHES MAXIMUM IN, cross-sectional_thickness: 0.175 INCHES NOMINAL IN, cross-sectional_shape_style: METAL WINDING W/ SOFT FILLER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-862-9391, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
803-841218
NSN: 5330-00-862-9391
FSC: 5330
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
outside_diameter4.173 INCHES NOMINAL IN
special_featuresCLASS 1, SERIES 1500
aperture_diameter3.626 INCHES MINIMUM AND 3.656 INCHES MAXIMUM IN
cross-sectional_thickness0.175 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL WINDING W/ SOFT FILLER
NSN5330-00-862-9391
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 803-841218 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: METAL WINDING W/ SOFT FILLER
•
APERTURE DIAMETER: 3.626 INCHES MINIMUM AND 3.656 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 4.173 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.175 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEMETAL WINDING W/ SOFT FILLER
APERTURE DIAMETER3.626 INCHES MINIMUM AND 3.656 INCHES MAXIMUM IN
OUTSIDE DIAMETER4.173 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.175 INCHES NOMINAL IN
SPECIAL FEATURESCLASS 1, SERIES 1500
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
803-5959278Interchangeable
interchangeable cross-reference
interchangeable
MIL-G-15342Interchangeable
interchangeable cross-reference
interchangeable
5000S5101F841218Interchangeable
interchangeable cross-reference
interchangeable
5000S5101F841218TYPE5Interchangeable
interchangeable cross-reference
interchangeable
5000S5101F841218TYPE2Interchangeable
interchangeable cross-reference
interchangeable
MILG16959Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803-841218?
803-841218 is a GASKET,SPIRAL WOUND.
What parts can replace 803-841218?
There are 17 known substitutes for 803-841218: 803-5959278, MIL-G-15342, 5000S5101F841218 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-841218?
803-841218 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-862-9391. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026