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AFS-1-521-2072838PC25 — RETAINER,SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AFS-1-521-2072838PC25: RETAINER,SEAL.

The RETAINER,SEAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 1.188 INCHES NOMINAL IN, seal_seat_depth: 1.000 INCHES NOMINAL IN, flange_thickness: 0.625 INCHES NOMINAL IN, special_features: COUNTERBORED END OPPOSITE FLANGE 3.750 IN. DIA 0.500 IN.

DEEP,CHAMFER SAME END 45 DEG BY 0.122 IN. IN, style_designator: FLANGED. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-477-1989, 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
AFS-1-521-2072838PC25
NSN: 5330-00-477-1989
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height1.188 INCHES NOMINAL IN
seal_seat_depth1.000 INCHES NOMINAL IN
flange_thickness0.625 INCHES NOMINAL IN
special_featuresCOUNTERBORED END OPPOSITE FLANGE 3.750 IN. DIA 0.500 IN. DEEP,CHAMFER SAME END 45 DEG BY 0.122 IN. IN
style_designatorFLANGED
aperture_diameter2.438 INCHES NOMINAL IN
bolt_hole_diameter0.656 INCHES NOMINAL IN
bolt_hole_quantity8
seal_seat_diameter2.835 INCHES NOMINAL IN
bolt_circle_diameter6.125 INCHES NOMINAL IN
body_outside_diameter4.325 INCHES MINIMUM AND 4.327 INCHES MAXIMUM IN
NSN5330-00-477-1989
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AFS-1-521-2072838PC25 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
•
FLANGE THICKNESS: 0.625 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 4.325 INCHES MINIMUM AND 4.327 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FLANGED
•
BOLT HOLE DIAMETER: 0.656 INCHES NOMINAL IN
•
SEAL SEAT DIAMETER: 2.835 INCHES NOMINAL IN
•
APERTURE DIAMETER: 2.438 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 8
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.188 INCHES NOMINAL IN
FLANGE THICKNESS0.625 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.325 INCHES MINIMUM AND 4.327 INCHES MAXIMUM IN
STYLE DESIGNATORFLANGED
BOLT HOLE DIAMETER0.656 INCHES NOMINAL IN
SEAL SEAT DIAMETER2.835 INCHES NOMINAL IN
APERTURE DIAMETER2.438 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER6.125 INCHES NOMINAL IN
SPECIAL FEATURESCOUNTERBORED END OPPOSITE FLANGE 3.750 IN. DIA 0.500 IN. DEEP,CHAMFER SAME END 45 DEG BY 0.122 IN. IN
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
330-521-23-25Reference document
Same NSN cross-reference
Reference document — Secondary 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 AFS-1-521-2072838PC25?
AFS-1-521-2072838PC25 is a RETAINER,SEAL.
What parts can replace AFS-1-521-2072838PC25?
There is 1 known substitute for AFS-1-521-2072838PC25: 330-521-23-25. Substitute compatibility should be verified for your specific system.
What is the NSN for AFS-1-521-2072838PC25?
AFS-1-521-2072838PC25 is cataloged in the U.S. Government catalog under NSN 5330-00-477-1989. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.