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PartsTable / COMPONENT / 20155 ITEM 11
20155 ITEM 11 ✓ 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: ASBESTOS OVERALL, hole_diameter: 0.440 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 3.750 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 2.120 INCHES MINIMUM AND 2.151 INCHES MAXIMUM IN, bolt_circle_diameter: 2.880 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 5330-01-044-2335, 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
20155 ITEM 11
NSN: 5330-01-044-2335
FSC: 5330
CAGE: 95368 — AERCO INTERNATIONAL, INC. DBA AERCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialASBESTOS OVERALL
hole_diameter0.440 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter3.750 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter2.120 INCHES MINIMUM AND 2.151 INCHES MAXIMUM IN
bolt_hole_quantity4
bolt_circle_diameter2.880 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-01-044-2335
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20155 ITEM 11 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
•
HOLE DIAMETER: 0.440 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT CIRCLE DIAMETER: 2.880 INCHES NOMINAL IN
•
APERTURE DIAMETER: 2.120 INCHES MINIMUM AND 2.151 INCHES MAXIMUM IN
•
MATERIAL: ASBESTOS OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
BOLT HOLE QUANTITY: 4
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.440 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT CIRCLE DIAMETER2.880 INCHES NOMINAL IN
APERTURE DIAMETER2.120 INCHES MINIMUM AND 2.151 INCHES MAXIMUM IN
MATERIALASBESTOS OVERALL
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
BOLT HOLE QUANTITY4
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
122-25Interchangeable
interchangeable cross-reference
interchangeable
905480-1Interchangeable
interchangeable cross-reference
interchangeable
173482Interchangeable
interchangeable cross-reference
interchangeable
5379023Interchangeable
interchangeable cross-reference
interchangeable
669358Interchangeable
interchangeable cross-reference
interchangeable
150 25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20155 ITEM 11?
20155 ITEM 11 is a GASKET.
What parts can replace 20155 ITEM 11?
There are 16 known substitutes for 20155 ITEM 11: 122-25, 905480-1, 173482 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20155 ITEM 11?
20155 ITEM 11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-044-2335. 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