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Technical Data Sheet
PartsTable / O-RING / A27577
A27577 ✓ 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, center_hole_diameter: 1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-441-9855, 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
A27577
NSN: 5331-00-441-9855
FSC: 5331 — O-RING
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
materialRUBBER
center_hole_diameter1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-441-9855
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A27577 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
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
•
CENTER HOLE DIAMETER: 1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER
CENTER HOLE DIAMETER1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
MS51971-8 3/4-1 0UNC-2B CRESInterchangeable
interchangeable cross-reference
interchangeable
5310PL0682801Interchangeable
interchangeable cross-reference
interchangeable
MILS1222 3/4-10 UNC 2B CARBON SInterchangeable
interchangeable cross-reference
interchangeable
510007Interchangeable
interchangeable cross-reference
interchangeable
P2B-S2-203RInterchangeable
interchangeable cross-reference
interchangeable
DE17573Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A27577?
A27577 is a O-RING.
What parts can replace A27577?
There are 8 known substitutes for A27577: MS51971-8 3/4-1 0UNC-2B CRES, 5310PL0682801, MILS1222 3/4-10 UNC 2B CARBON S and 5 more. Substitute compatibility should be verified for your specific system.
Is A27577 still available?
A27577 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