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Technical Data Sheet
PartsTable / COMPONENT / 20RB400
20RB400 ✓ 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: 11.875 INCHES NOMINAL IN, aperture_width: 7.520 INCHES NOMINAL IN, overall_length: 36.500 INCHES NOMINAL IN, aperture_length: 24.470 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-214-3968, 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
20RB400
NSN: 5330-00-214-3968
FSC: 5330
CAGE: 63728 — SEALCRAFT CORPORATION (USA)
SPECIFICATIONS
materialPAPER OVERALL
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width11.875 INCHES NOMINAL IN
aperture_width7.520 INCHES NOMINAL IN
overall_length36.500 INCHES NOMINAL IN
aperture_length24.470 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
bolt_hole_quantity28
lubrication_methodCOATED
inside_corner_radius1.500 INCHES NOMINAL IN
outside_corner_radius2.312 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
NSN5330-00-214-3968
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20RB400 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
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH: 0.203 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 3.750 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT HOLE QUANTITY: 28
•
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
APERTURE LENGTH: 24.470 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 1.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.203 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH3.750 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT HOLE QUANTITY28
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL WIDTH11.875 INCHES NOMINAL IN
APERTURE LENGTH24.470 INCHES NOMINAL IN
INSIDE CORNER RADIUS1.500 INCHES NOMINAL IN
OVERALL LENGTH36.500 INCHES NOMINAL IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH3.016 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
204-44Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
202R-687Interchangeable
interchangeable cross-reference
interchangeable
263-428AInterchangeable
interchangeable cross-reference
interchangeable
10-2160Interchangeable
interchangeable cross-reference
interchangeable
102-0160Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20RB400?
20RB400 is a GASKET.
What parts can replace 20RB400?
There are 9 known substitutes for 20RB400: 204-44, GGG-R-180, 202R-687 and 6 more. Substitute compatibility should be verified for your specific system.
Is 20RB400 still available?
20RB400 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