PartsTable
Technical Data Sheet
R21031 ✓ 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 hole_diameter: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 4.094 INCHES NOMINAL IN, aperture_diameter: 2.812 INCHES NOMINAL IN, bolt_circle_diameter: 3.438 INCHES NOMINAL IN, cross-sectional_thickness: 0.016 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-737-1109, 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
R21031
NSN: 5330-00-737-1109
FSC: 5330
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width4.094 INCHES NOMINAL IN
aperture_diameter2.812 INCHES NOMINAL IN
bolt_circle_diameter3.438 INCHES NOMINAL IN
cross-sectional_thickness0.016 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
side_radius_from_gasket_center1.625 INCHES NOMINAL IN
NSN5330-00-737-1109
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R21031 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
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT CIRCLE DIAMETER: 3.438 INCHES NOMINAL IN
APERTURE DIAMETER: 2.812 INCHES NOMINAL IN
SIDE RADIUS FROM GASKET CENTER: 1.625 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT CIRCLE DIAMETER3.438 INCHES NOMINAL IN
APERTURE DIAMETER2.812 INCHES NOMINAL IN
SIDE RADIUS FROM GASKET CENTER1.625 INCHES NOMINAL IN
OVERALL WIDTH4.094 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
101466Interchangeable
interchangeable cross-reference
interchangeable
A-904Interchangeable
interchangeable cross-reference
interchangeable
A904EInterchangeable
interchangeable cross-reference
interchangeable
99134229Interchangeable
interchangeable cross-reference
interchangeable
14973Interchangeable
interchangeable cross-reference
interchangeable
34229Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R21031?
R21031 is a GASKET.
What parts can replace R21031?
There are 21 known substitutes for R21031: 101466, A-904, A904E and 18 more. Substitute compatibility should be verified for your specific system.
Is R21031 still available?
R21031 is currently cancelled.
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