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603788 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

603788: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include joint_type: SCARF-PERIPHERAL PACKING, peripheral_diameter: 1.875 INCHES NOMINAL IN, center_hole_diameter: 1.250 INCHES NOMINAL IN, cross-sectional_height: 0.250 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE/RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-865-7394, 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
603788
NSN: 5330-00-865-7394
NIINs: 008657394, 015983685
FSC: 5330 — Packing and Gasket Materials
CAGE: 96132 — WALWORTH CO THE
SPECIFICATIONS
joint_typeSCARF-PERIPHERAL PACKING
peripheral_diameter1.875 INCHES NOMINAL IN
center_hole_diameter1.250 INCHES NOMINAL IN
cross-sectional_height0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
NSN5330-00-865-7394
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 603788 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: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 1.875 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS AND PLASTIC OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL PACKING
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER1.875 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.250 INCHES NOMINAL IN
MATERIALASBESTOS AND PLASTIC OVERALL
JOINT TYPESCARF-PERIPHERAL PACKING
SUBSTITUTES & CROSS-REFERENCES 2
A7514M189PC14Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
A9781M161PC28Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 603788?
603788 is a PACKING,PREFORMED.
What parts can replace 603788?
There are 2 known substitutes for 603788: A7514M189PC14, A9781M161PC28. Substitute compatibility should be verified for your specific system.
What is the NSN for 603788?
603788 is cataloged in the U.S. Government catalog under NSN 5330-00-865-7394. 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.