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AP771 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AP771: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 45.0 DEGREES NOMINAL, material: NICKEL ALLOY 201 OVERALL, peripheral_diameter: 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, center_hole_diameter: 0.402 INCHES MINIMUM AND 0.407 INCHES MAXIMUM IN, cross-sectional_height: 0.290 INCHES NOMINAL IN, cross-sectional_shape_style: FLANGE. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-128-7087, 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
AP771
NSN: 5330-01-128-7087
FSC: 5330 — Packing and Gasket Materials
CAGE: 01673 — SPS TECHNOLOGIES, LLC DBA AIRDROME PRECISION COMPONENTS (USA)
SPECIFICATIONS
angle45.0 DEGREES NOMINAL
materialNICKEL ALLOY 201 OVERALL
peripheral_diameter0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
center_hole_diameter0.402 INCHES MINIMUM AND 0.407 INCHES MAXIMUM IN
cross-sectional_height0.290 INCHES NOMINAL IN
cross-sectional_shape_styleFLANGE
flanged_body_outside_diameter0.655 INCHES NOMINAL IN
material_document_and_classificationAMS 5553 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-128-7087
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AP771 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 HEIGHT: 0.290 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5553 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: FLANGE
•
ANGLE: 45.0 DEGREES NOMINAL
•
FLANGED BODY OUTSIDE DIAMETER: 0.655 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.402 INCHES MINIMUM AND 0.407 INCHES MAXIMUM IN
•
MATERIAL: NICKEL ALLOY 201 OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.290 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5553 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEFLANGE
ANGLE45.0 DEGREES NOMINAL
FLANGED BODY OUTSIDE DIAMETER0.655 INCHES NOMINAL IN
PERIPHERAL DIAMETER0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.402 INCHES MINIMUM AND 0.407 INCHES MAXIMUM IN
MATERIALNICKEL ALLOY 201 OVERALL
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
23001456Reference 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 AP771?
AP771 is a RETAINER,PACKING.
What parts can replace AP771?
There is 1 known substitute for AP771: 23001456. Substitute compatibility should be verified for your specific system.
What is the NSN for AP771?
AP771 is cataloged in the U.S. Government catalog under NSN 5330-01-128-7087. 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.