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M1769 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

M1769: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR, center_hole_diameter: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN, cross-sectional_height: 1.441 INCHES MINIMUM AND 1.451 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-767-5477, 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
M1769
NSN: 5331-00-767-5477
FSC: 5331 — O-ring
CAGE: 54647 — MICROTECH INC DBA MICROTECH INC (USA)
SPECIFICATIONS
materialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
center_hole_diameter0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
cross-sectional_height1.441 INCHES MINIMUM AND 1.451 INCHES MAXIMUM IN
NSN5331-00-767-5477
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M1769 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: 1.441 INCHES MINIMUM AND 1.451 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
MATERIAL: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT1.441 INCHES MINIMUM AND 1.451 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
MATERIALRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 1
2182065-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M1769?
M1769 is a O-RING.
What parts can replace M1769?
There is 1 known substitute for M1769: 2182065-3. Substitute compatibility should be verified for your specific system.
What is the NSN for M1769?
M1769 is cataloged in the U.S. Government catalog under NSN 5331-00-767-5477. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.