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Technical Data Sheet
PartsTable / O-RING / 556-6406596-MFB C-B27
556-6406596-MFB C-B27 ✓ 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 SPACER,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.6900 INCHES NOMINAL IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.5310 INCHES NOMINAL IN, body_outside_diameter: 0.7500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-005-3205, 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
556-6406596-MFB C-B27
NSN: 5331-01-005-3205
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.6900 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.5310 INCHES NOMINAL IN
body_outside_diameter0.7500 INCHES NOMINAL IN
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5331-01-005-3205
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 556-6406596-MFB C-B27 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
•
OUTSIDE DIAMETER: 4.730 INCHES MINIMUM AND 4.810 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
CENTER HOLE DIAMETER: 4.320 INCHES MINIMUM AND 4.380 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER4.730 INCHES MINIMUM AND 4.810 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
CENTER HOLE DIAMETER4.320 INCHES MINIMUM AND 4.380 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
30808989 ITEM 23Interchangeable
interchangeable cross-reference
interchangeable
N-999-6082-A-007 ITEM 12Interchangeable
interchangeable cross-reference
interchangeable
M82348/1-136Interchangeable
interchangeable cross-reference
interchangeable
AMS7276Interchangeable
interchangeable cross-reference
interchangeable
M83248-1-451Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-451Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 556-6406596-MFB C-B27?
556-6406596-MFB C-B27 is a SPACER,SLEEVE.
What parts can replace 556-6406596-MFB C-B27?
There are 33 known substitutes for 556-6406596-MFB C-B27: 30808989 ITEM 23, N-999-6082-A-007 ITEM 12, M82348/1-136 and 30 more. Substitute compatibility should be verified for your specific system.
Is 556-6406596-MFB C-B27 still available?
556-6406596-MFB C-B27 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