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820-5786961-1 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

820-5786961-1: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, center_hole_diameter: 2.438 INCHES NOMINAL IN, cross-sectional_height: 0.094 INCHES NOMINAL IN, cross-sectional_shape_style: O-RING, part_name_assigned_by_controlling_agency: PACKING,PREFORMED. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-237-5562, 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
820-5786961-1
NSN: 5330-01-237-5562
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER OVERALL
center_hole_diameter2.438 INCHES NOMINAL IN
cross-sectional_height0.094 INCHES NOMINAL IN
cross-sectional_shape_styleO-RING
part_name_assigned_by_controlling_agencyPACKING,PREFORMED
NSN5330-01-237-5562
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 820-5786961-1 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: 0.094 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: O-RING
•
CENTER HOLE DIAMETER: 2.438 INCHES NOMINAL IN
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.094 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEO-RING
CENTER HOLE DIAMETER2.438 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPACKING,PREFORMED
MATERIALRUBBER OVERALL
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 2
2-143E540-80Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-143 E0540-80Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 820-5786961-1?
820-5786961-1 is a PACKING,PREFORMED.
What parts can replace 820-5786961-1?
There are 2 known substitutes for 820-5786961-1: 2-143E540-80, 2-143 E0540-80. Substitute compatibility should be verified for your specific system.
What is the NSN for 820-5786961-1?
820-5786961-1 is cataloged in the U.S. Government catalog under NSN 5330-01-237-5562. 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.