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Technical Data Sheet
PartsTable / COMPONENT / 1S669
1S669 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, peripheral_diameter: 3.605 INCHES MINIMUM AND 3.643 INCHES MAXIMUM IN, center_hole_diameter: 3.491 INCHES MINIMUM AND 3.521 INCHES MAXIMUM IN, cross-sectional_height: 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-716-6776, 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
1S669
NSN: 5330-00-716-6776
FSC: 5330
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
peripheral_diameter3.605 INCHES MINIMUM AND 3.643 INCHES MAXIMUM IN
center_hole_diameter3.491 INCHES MINIMUM AND 3.521 INCHES MAXIMUM IN
cross-sectional_height0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
cross-sectional_shape_styleU
NSN5330-00-716-6776
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1S669 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 SYNTHETIC OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: U
•
PERIPHERAL DIAMETER: 3.605 INCHES MINIMUM AND 3.643 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.491 INCHES MINIMUM AND 3.521 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC OVERALL
CROSS-SECTIONAL SHAPE STYLEU
PERIPHERAL DIAMETER3.605 INCHES MINIMUM AND 3.643 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
CENTER HOLE DIAMETER3.491 INCHES MINIMUM AND 3.521 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
VBE417-181Interchangeable
interchangeable cross-reference
interchangeable
082-38Interchangeable
interchangeable cross-reference
interchangeable
357-9039-000Interchangeable
interchangeable cross-reference
interchangeable
8238Interchangeable
interchangeable cross-reference
interchangeable
K8238Interchangeable
interchangeable cross-reference
interchangeable
2040H25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1S669?
1S669 is a PACKING,PREFORMED.
What parts can replace 1S669?
There are 16 known substitutes for 1S669: VBE417-181, 082-38, 357-9039-000 and 13 more. Substitute compatibility should be verified for your specific system.
Is 1S669 still available?
1S669 is currently cancelled.
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Last verified: July 2026