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PartsTable / COMPONENT / 4550A
4550A ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, material: STEEL OVERALL, barrel_style: STRAIGHT ROUND TYPE, flange_style: FLANGE, barrel_height: 0.280 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN, barrel_outside_diameter: 0.156 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-286-6816, 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
4550A
NSN: 5330-00-286-6816
FSC: 5330
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL OVERALL
barrel_styleSTRAIGHT ROUND TYPE
flange_styleFLANGE
barrel_height0.280 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN
barrel_outside_diameter0.156 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN
flange_outside_diameter0.5515 INCHES MINIMUM AND 0.5635 INCHES MAXIMUM IN
NSN5330-00-286-6816
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4550A 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
H5582Interchangeable
interchangeable cross-reference
interchangeable
48-15021Interchangeable
interchangeable cross-reference
interchangeable
EW7197Interchangeable
interchangeable cross-reference
interchangeable
100-1Interchangeable
interchangeable cross-reference
interchangeable
15202Interchangeable
interchangeable cross-reference
interchangeable
4102Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4550A?
4550A is a SEAL,PLAIN ENCASED.
What parts can replace 4550A?
There are 26 known substitutes for 4550A: H5582, 48-15021, EW7197 and 23 more. Substitute compatibility should be verified for your specific system.
Is 4550A still available?
4550A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026