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Technical Data Sheet
PartsTable / COMPONENT / 7218A
7218A ✓ 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: PAPER OVERALL, hole_diameter: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 3.750 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 1.688 INCHES NOMINAL IN, bolt_circle_diameter: 2.938 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-251-4082, 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
7218A
NSN: 5330-00-251-4082
FSC: 5330
CAGE: 15723 — D N K (USA)
SPECIFICATIONS
materialPAPER OVERALL
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.750 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter1.688 INCHES NOMINAL IN
bolt_hole_quantity2
bolt_circle_diameter2.938 INCHES NOMINAL IN
outside_corner_radius0.406 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
side_radius_from_gasket_center1.250 INCHES NOMINAL IN
NSN5330-00-251-4082
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7218A 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: SOLID SINGLE OR COMPOSITION
•
SIDE RADIUS FROM GASKET CENTER: 1.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.688 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.406 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT HOLE QUANTITY: 2
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 2.938 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
SIDE RADIUS FROM GASKET CENTER1.250 INCHES NOMINAL IN
APERTURE DIAMETER1.688 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.406 INCHES NOMINAL IN
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT HOLE QUANTITY2
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER2.938 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
34758Interchangeable
interchangeable cross-reference
interchangeable
61-362Interchangeable
interchangeable cross-reference
interchangeable
2810L20-015Interchangeable
interchangeable cross-reference
interchangeable
5258Interchangeable
interchangeable cross-reference
interchangeable
7218AInterchangeable
interchangeable cross-reference
interchangeable
692450Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7218A?
7218A is a GASKET.
What parts can replace 7218A?
There are 19 known substitutes for 7218A: 34758, 61-362, 2810L20-015 and 16 more. Substitute compatibility should be verified for your specific system.
Is 7218A still available?
7218A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026