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2218598 ✓ 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 is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q AND NICKEL ALLOY OVERALL, hole_diameter: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.250 INCHES NOMINAL IN, aperture_width: 1.250 INCHES NOMINAL IN, overall_length: 3.250 INCHES NOMINAL IN, aperture_length: 2.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-735-4729, 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
2218598
NSN: 5330-00-735-4729
FSC: 5330
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q AND NICKEL ALLOY OVERALL
hole_diameter0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.250 INCHES NOMINAL IN
aperture_width1.250 INCHES NOMINAL IN
overall_length3.250 INCHES NOMINAL IN
aperture_length2.250 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
bolt_hole_quantity8
cross-sectional_thickness0.093 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
outside_edge_to_bolt_hole_center_distance_along_width0.187 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.187 INCHES NOMINAL IN
NSN5330-00-735-4729
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2218598 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 AND SYNTHETIC RUBBER
•
STYLE DESIGNATOR: NON-CIRCULAR
•
BOLT HOLE QUANTITY: 8
•
APERTURE LENGTH: 2.250 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH: 0.187 INCHES NOMINAL IN
•
MATERIAL: RUBBER SILICONE CLASS Q AND NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEMETAL AND SYNTHETIC RUBBER
STYLE DESIGNATORNON-CIRCULAR
BOLT HOLE QUANTITY8
APERTURE LENGTH2.250 INCHES NOMINAL IN
HOLE DIAMETER0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.187 INCHES NOMINAL IN
OVERALL LENGTH3.250 INCHES NOMINAL IN
MATERIALRUBBER SILICONE CLASS Q AND NICKEL ALLOY OVERALL
CROSS-SECTIONAL THICKNESS0.093 INCHES NOMINAL IN
OVERALL WIDTH2.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
KE071Interchangeable
interchangeable cross-reference
interchangeable
SM-B-526615Interchangeable
interchangeable cross-reference
interchangeable
292-10070Interchangeable
interchangeable cross-reference
interchangeable
50939Interchangeable
interchangeable cross-reference
interchangeable
31493Interchangeable
interchangeable cross-reference
interchangeable
44-90336DInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2218598?
2218598 is a GASKET.
What parts can replace 2218598?
There are 7 known substitutes for 2218598: KE071, SM-B-526615, 292-10070 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2218598?
2218598 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-735-4729. 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