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A1N420 — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A1N420: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL SPREADER, seal_width: 0.472 INCHES NOMINAL IN, construction: SOLID, fsc_application_data: CONVERTER,NITROGEN, housing_bore_diameter: 3.937 INCHES NOMINAL IN, accommodated_shaft_diameter: 2.756 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-988-0448, 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
A1N420
NSN: 5330-00-988-0448
FSC: 5330 — Packing and Gasket Materials
CAGE: 31949 — BROOKS AUTOMATION, INC. DIV CTI CRYOGENICS (USA)
SPECIFICATIONS
materialSTEEL SPREADER
seal_width0.472 INCHES NOMINAL IN
constructionSOLID
fsc_application_dataCONVERTER,NITROGEN
housing_bore_diameter3.937 INCHES NOMINAL IN
accommodated_shaft_diameter2.756 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
NSN5330-00-988-0448
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A1N420 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
•
FSC APPLICATION DATA: CONVERTER,NITROGEN
•
SEAL WIDTH: 0.472 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 3.937 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
ACCOMMODATED SHAFT DIAMETER: 2.756 INCHES NOMINAL IN
•
MATERIAL: STEEL INTERNALLY MOLDED-IN REINFORCEMENT
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATACONVERTER,NITROGEN
SEAL WIDTH0.472 INCHES NOMINAL IN
HOUSING BORE DIAMETER3.937 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
ACCOMMODATED SHAFT DIAMETER2.756 INCHES NOMINAL IN
MATERIALSTEEL INTERNALLY MOLDED-IN REINFORCEMENT
MATERIALSTEEL SPREADER
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 1
400420Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A1N420?
A1N420 is a SEAL,PLAIN.
What parts can replace A1N420?
There is 1 known substitute for A1N420: 400420. Substitute compatibility should be verified for your specific system.
What is the NSN for A1N420?
A1N420 is cataloged in the U.S. Government catalog under NSN 5330-00-988-0448. This indicates validated use in U.S. government and defense supply chains.
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