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Technical Data Sheet
PartsTable / O-RING / B568-011
B568-011 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, temp_rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF, hardness_rating: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM, outside_diameter: 0.441 INCHES NOMINAL IN, center_hole_diameter: 0.294 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN, elongation_percentage: 100 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-264-9720, 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
B568-011
NSN: 5331-00-264-9720
FSC: 5331 — O-RING
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
temp_rating-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
hardness_rating85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
outside_diameter0.441 INCHES NOMINAL IN
center_hole_diameter0.294 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
elongation_percentage100 MAXIMUM
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
criticality_code_justificationZZZY
material_document_and_classificationMIL-G-23652,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5331-00-264-9720
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B568-011 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: 0.441 INCHES NOMINAL IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 100 MAXIMUM
•
TEMP RATING: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
CENTER HOLE DIAMETER: 0.294 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.441 INCHES NOMINAL IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
ELONGATION PERCENTAGE100 MAXIMUM
TEMP RATING-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALRUBBER FLUOROCARBON CLASS FPM
CENTER HOLE DIAMETER0.294 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23652,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE
HARDNESS RATING85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4420596-0110Interchangeable
interchangeable cross-reference
interchangeable
10182-2 ITEM9Interchangeable
interchangeable cross-reference
interchangeable
J222P011Interchangeable
interchangeable cross-reference
interchangeable
028 09378 000Interchangeable
interchangeable cross-reference
interchangeable
D50265 ITEM 30Interchangeable
interchangeable cross-reference
interchangeable
NK1648Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B568-011?
B568-011 is a O-RING.
What parts can replace B568-011?
There are 15 known substitutes for B568-011: 4420596-0110, 10182-2 ITEM9, J222P011 and 12 more. Substitute compatibility should be verified for your specific system.
Is B568-011 still available?
B568-011 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