PartsTable / O-RING / A20489
A20489
✓ 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN, hole_diameter: 0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN, overall_diameter: 0.433 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-078-8444, 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
A20489
NSN: 5331-00-078-8444 FSC: 5331 — O-RINGCAGE: 87405 — FACET (OKLAHOMA) LLC (USA)
SPECIFICATIONS
material STEEL OVERALL thickness 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN hole_diameter 0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN overall_diameter 0.433 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN surface_treatment CADMIUM AND CHROMATE OVERALL peripheral_shape_style ROUND center_hole_shape_style ROUND cross-sectional_shape_style RECTANGULAR nondefinitive_spec/std_data A TYPE AND 1 GRADE AND A CLASS material_document_and_classification 66 FED STD SINGLE MATERIAL RESPONSE OVERALL surface_treatment_document_and_classification QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL NSN 5331-00-078-8444
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: A20489
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
• ELONGATION PERCENTAGE: 200 MAXIMUM
• MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
• HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
• CROSS-SECTIONAL HEIGHT: 0.275 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ELONGATION PERCENTAGE 200 MAXIMUM MATERIAL RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR HARDNESS RATING 65.0 SHORE DUROMETER A NOMINAL CROSS-SECTIONAL HEIGHT 0.275 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
20489 Interchangeable interchangeable cross-reference
interchangeable
H610015567 Interchangeable interchangeable cross-reference
interchangeable
154555 Interchangeable interchangeable cross-reference
interchangeable
214-1004P4 Interchangeable interchangeable cross-reference
interchangeable
XX002-0529 Interchangeable interchangeable cross-reference
interchangeable
MS15975-208 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A20489?
A20489 is a WASHER,FLAT.
What parts can replace A20489?
There are 9 known substitutes for A20489: 20489, H610015567, 154555 and 6 more. Substitute compatibility should be verified for your specific system.
Is A20489 still available?
A20489 is currently cancelled.