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Technical Data Sheet
PartsTable / COMPONENT / 3687H018
3687H018 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, aperture_diameter: 1.844 INCHES NOMINAL IN, bolt_circle_diameter: 3.859 INCHES NOMINAL IN, outside_corner_radius: 0.352 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-908-7293, 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
3687H018
NSN: 5330-00-908-7293
FSC: 5330
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
aperture_diameter1.844 INCHES NOMINAL IN
bolt_circle_diameter3.859 INCHES NOMINAL IN
outside_corner_radius0.352 INCHES NOMINAL IN
NSN5330-00-908-7293
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3687H018 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
•
APERTURE DIAMETER: 1.844 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT CIRCLE DIAMETER: 3.859 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.352 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE DIAMETER1.844 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT CIRCLE DIAMETER3.859 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.352 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
39-685Interchangeable
interchangeable cross-reference
interchangeable
32-185Interchangeable
interchangeable cross-reference
interchangeable
32-134Interchangeable
interchangeable cross-reference
interchangeable
91A2143AInterchangeable
interchangeable cross-reference
interchangeable
FC5918Interchangeable
interchangeable cross-reference
interchangeable
3701542Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3687H018?
3687H018 is a GASKET.
What parts can replace 3687H018?
There are 9 known substitutes for 3687H018: 39-685, 32-185, 32-134 and 6 more. Substitute compatibility should be verified for your specific system.
Is 3687H018 still available?
3687H018 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