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PartsTable / COMPONENT / 256202 PIECE 20
256202 PIECE 20 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM, material: PLASTIC TETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-BUTT OVERALL, peripheral_diameter: 0.864 INCHES NOMINAL IN, center_hole_diameter: 0.688 INCHES NOMINAL IN, distance_between_ends: 0.032 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-043-3468, 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
256202 PIECE 20
NSN: 5330-01-043-3468
FSC: 5330
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-BUTT OVERALL
peripheral_diameter0.864 INCHES NOMINAL IN
center_hole_diameter0.688 INCHES NOMINAL IN
distance_between_ends0.032 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
cross-sectional_height0.075 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
cross-sectional_thickness0.025 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
material_document_and_classificationSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-043-3468
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 256202 PIECE 20 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
•
JOINT TYPE: SCARF-BUTT OVERALL
•
MATERIAL: PLASTIC TETRAFLUOROETHYLENE OVERALL
•
ANGLE: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
•
CENTER HOLE DIAMETER: 0.688 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 0.864 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.025 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
JOINT TYPESCARF-BUTT OVERALL
MATERIALPLASTIC TETRAFLUOROETHYLENE OVERALL
ANGLE25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CENTER HOLE DIAMETER0.688 INCHES NOMINAL IN
PERIPHERAL DIAMETER0.864 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.025 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESQUARE
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
845-1889834PC92Interchangeable
interchangeable cross-reference
interchangeable
845-1889836PC92Interchangeable
interchangeable cross-reference
interchangeable
2640-085PC92Interchangeable
interchangeable cross-reference
interchangeable
255753PC57Interchangeable
interchangeable cross-reference
interchangeable
26000-13Interchangeable
interchangeable cross-reference
interchangeable
982185Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 256202 PIECE 20?
256202 PIECE 20 is a RETAINER,PACKING.
What parts can replace 256202 PIECE 20?
There are 13 known substitutes for 256202 PIECE 20: 845-1889834PC92, 845-1889836PC92, 2640-085PC92 and 10 more. Substitute compatibility should be verified for your specific system.
Is 256202 PIECE 20 still available?
256202 PIECE 20 is currently cancelled.
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Last verified: July 2026