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350685-000 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

350685-000: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.138 INCHES MINIMUM AND 0.146 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.770 INCHES NOMINAL IN, overall_length: 1.770 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 1.548 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN, outside_corner_radius: 0.200 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-070-2120, 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
350685-000
NSN: 5330-01-070-2120
FSC: 5330 — Packing and Gasket Materials
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
hole_diameter0.138 INCHES MINIMUM AND 0.146 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.770 INCHES NOMINAL IN
overall_length1.770 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter1.548 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
bolt_hole_quantity4
outside_corner_radius0.200 INCHES NOMINAL IN
cross-sectional_thickness0.019 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
outside_edge_to_bolt_hole_center_distance_along_width0.230 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.230 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_width1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
center_to_center_distance_between_bolt_holes_along_length1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
NSN5330-01-070-2120
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 350685-000 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 THICKNESS: 0.019 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
APERTURE DIAMETER: 1.548 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
•
BOLT HOLE QUANTITY: 4
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.019 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
STYLE DESIGNATORNON-CIRCULAR
OVERALL LENGTH1.770 INCHES NOMINAL IN
OVERALL WIDTH1.770 INCHES NOMINAL IN
APERTURE DIAMETER1.548 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
BOLT HOLE QUANTITY4
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.303 INCHES MINIMUM AND 1.323 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.230 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.200 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
3153057Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 350685-000?
350685-000 is a GASKET.
What parts can replace 350685-000?
There is 1 known substitute for 350685-000: 3153057. Substitute compatibility should be verified for your specific system.
What is the NSN for 350685-000?
350685-000 is cataloged in the U.S. Government catalog under NSN 5330-01-070-2120. 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.