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Technical Data Sheet
PartsTable / O-RING / MS29561-127
MS29561-127 ✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.630 INCHES NOMINAL IN, center_hole_diameter: 1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN, elongation_percentage: 250 MAXIMUM, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-988-8809, 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
MS29561-127
NSN: 5331-00-988-8809
FSC: 5331 — O-RING
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter1.630 INCHES NOMINAL IN
center_hole_diameter1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN
elongation_percentage250 MAXIMUM
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
NSN5331-00-988-8809
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS29561-127 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
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 1.630 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 250 MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER1.630 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
ELONGATION PERCENTAGE250 MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
SAE-AS29561Interchangeable
interchangeable cross-reference
interchangeable
MS29561-265Interchangeable
interchangeable cross-reference
interchangeable
AS29561Interchangeable
interchangeable cross-reference
interchangeable
MS29561-016Interchangeable
interchangeable cross-reference
interchangeable
MS29561-123Interchangeable
interchangeable cross-reference
interchangeable
MS29561-347Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS29561-127?
MS29561-127 is a O-RING.
What parts can replace MS29561-127?
There are 11 known substitutes for MS29561-127: SAE-AS29561, MS29561-265, AS29561 and 8 more. Substitute compatibility should be verified for your specific system.
Is MS29561-127 still available?
MS29561-127 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