PartsTable
Technical Data Sheet
PartsTable / O-RING / 27-409981
27-409981 ✓ 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 SILICONE CLASS Q, temp_rating: -60.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF, hardness_rating: 60.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.557 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN, center_hole_diameter: 0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN, cross-sectional_height: 0.093 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-988-7907, 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
27-409981
NSN: 5331-00-988-7907
FSC: 5331 — O-RING
CAGE: C5845 — COMMUNICATIONS & POWER INDUSTRIES INTERNATIONAL INC. ZWEIGNIEDERLASSUNG ISMANING (DEU)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
temp_rating-60.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
hardness_rating60.0 SHORE DUROMETER A NOMINAL
outside_diameter0.557 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
center_hole_diameter0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
cross-sectional_height0.093 INCHES NOMINAL IN
NSN5331-00-988-7907
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 27-409981 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: 0.093 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.557 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
•
TEMP RATING: -60.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 60.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER SILICONE CLASS Q
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.093 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.557 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
TEMP RATING-60.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
HARDNESS RATING60.0 SHORE DUROMETER A NOMINAL
MATERIALRUBBER SILICONE CLASS Q
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
7222-110-569Interchangeable
interchangeable cross-reference
interchangeable
AS568-110Interchangeable
interchangeable cross-reference
interchangeable
2-110-N674-70Interchangeable
interchangeable cross-reference
interchangeable
5330-227-2Interchangeable
interchangeable cross-reference
interchangeable
6AND8BInterchangeable
interchangeable cross-reference
interchangeable
AMS3215Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 27-409981?
27-409981 is a O-RING.
What parts can replace 27-409981?
There are 17 known substitutes for 27-409981: 7222-110-569, AS568-110, 2-110-N674-70 and 14 more. Substitute compatibility should be verified for your specific system.
Is 27-409981 still available?
27-409981 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026