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H623-0503-16 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H623-0503-16: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, cross-sectional_height: 0.500 INCHES NOMINAL IN, end_item_identification: ROD ASSY, cross-sectional_shape_style: SQUARE/RECTANGULAR, part_name_assigned_by_controlling_agency: RETAINER, SPLIT HALF. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-641-5631, 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
H623-0503-16
NSN: 5330-01-641-5631
FSC: 5330 — Packing and Gasket Materials
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
cross-sectional_height0.500 INCHES NOMINAL IN
end_item_identificationROD ASSY
cross-sectional_shape_styleSQUARE/RECTANGULAR
part_name_assigned_by_controlling_agencyRETAINER, SPLIT HALF
NSN5330-01-641-5631
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H623-0503-16 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: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PART NAME ASSIGNED BY CONTROLLING AGENCYRETAINER, SPLIT HALF
END ITEM IDENTIFICATIONROD ASSY
MATERIALNICKEL ALLOY 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 1
656-6985431Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H623-0503-16?
H623-0503-16 is a RETAINER,PACKING.
What parts can replace H623-0503-16?
There is 1 known substitute for H623-0503-16: 656-6985431. Substitute compatibility should be verified for your specific system.
What is the NSN for H623-0503-16?
H623-0503-16 is cataloged in the U.S. Government catalog under NSN 5330-01-641-5631. 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.