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PartsTable / COMPONENT / 581-1L11 PIECE 6
581-1L11 PIECE 6 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, outside_diameter: 0.812 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.562 INCHES NOMINAL IN, cross-sectional_thickness: 0.312 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-053-9837, 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
581-1L11 PIECE 6
NSN: 5330-01-053-9837
FSC: 5330
CAGE: 72256 — ERNST FLOW INDUSTRIES (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
outside_diameter0.812 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.562 INCHES NOMINAL IN
cross-sectional_thickness0.312 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-01-053-9837
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 581-1L11 PIECE 6 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
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.312 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 0.812 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
CROSS-SECTIONAL THICKNESS0.312 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER0.812 INCHES NOMINAL IN
APERTURE DIAMETER0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5816Interchangeable
interchangeable cross-reference
interchangeable
A-A-59457Interchangeable
interchangeable cross-reference
interchangeable
MIL-D-80038Interchangeable
interchangeable cross-reference
interchangeable
A-A-59457TYIISTASZ1Interchangeable
interchangeable cross-reference
interchangeable
850614Interchangeable
interchangeable cross-reference
interchangeable
25681Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 581-1L11 PIECE 6?
581-1L11 PIECE 6 is a GASKET.
What parts can replace 581-1L11 PIECE 6?
There are 17 known substitutes for 581-1L11 PIECE 6: 5816, A-A-59457, MIL-D-80038 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 581-1L11 PIECE 6?
581-1L11 PIECE 6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-053-9837. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026