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Technical Data Sheet
PartsTable / COMPONENT / HH-C-576B, TYPE 1A, CLASS 3
HH-C-576B, TYPE 1A, CLASS 3 ✓ 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 HH-C-576B, TYPE 1A, CLASS 3 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-298-5831, 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
HH-C-576B, TYPE 1A, CLASS 3
NSN: 5330-00-298-5831
FSC: 5330
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
Part NumberHH-C-576B, TYPE 1A, CLASS 3
NSN5330-00-298-5831
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: HH-C-576B, TYPE 1A, CLASS 3 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: HH-C-576,TY 1A,CL 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
•
MATERIAL: CORK AND RESIN NATURAL OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 2.187 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.609 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
•
JOINT TYPE: SCARF-PERIPHERAL OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.375 INCHES NOMINAL IN
•
CUT TYPE: RECTANGULAR OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONHH-C-576,TY 1A,CL 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
MATERIALCORK AND RESIN NATURAL OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER2.187 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.609 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
JOINT TYPESCARF-PERIPHERAL OVERALL
CROSS-SECTIONAL HEIGHT0.375 INCHES NOMINAL IN
CUT TYPERECTANGULAR OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
BLPAFM1438Interchangeable
interchangeable cross-reference
interchangeable
TA3Interchangeable
interchangeable cross-reference
interchangeable
B107.10MInterchangeable
interchangeable cross-reference
interchangeable
86002Interchangeable
interchangeable cross-reference
interchangeable
139794Interchangeable
interchangeable cross-reference
interchangeable
V-4332Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HH-C-576B, TYPE 1A, CLASS 3?
HH-C-576B, TYPE 1A, CLASS 3 is a HH-C-576B, TYPE 1A, CLASS 3.
What parts can replace HH-C-576B, TYPE 1A, CLASS 3?
There are 20 known substitutes for HH-C-576B, TYPE 1A, CLASS 3: BLPAFM1438, TA3, B107.10M and 17 more. Substitute compatibility should be verified for your specific system.
Is HH-C-576B, TYPE 1A, CLASS 3 still available?
HH-C-576B, TYPE 1A, CLASS 3 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