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55-58157 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

55-58157: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, peripheral_diameter: 1.240 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN, center_hole_diameter: 0.748 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN, cross-sectional_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-218-9485, 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
55-58157
NSN: 5330-00-218-9485
FSC: 5330 — Packing and Gasket Materials
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
peripheral_diameter1.240 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
center_hole_diameter0.748 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN
cross-sectional_height0.250 INCHES NOMINAL IN
cross-sectional_shape_styleV
NSN5330-00-218-9485
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 55-58157 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: V
•
PERIPHERAL DIAMETER: 1.240 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.748 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEV
PERIPHERAL DIAMETER1.240 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.748 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN
MATERIALALUMINUM 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55-58157?
55-58157 is a RETAINER,PACKING.
What is the NSN for 55-58157?
55-58157 is cataloged in the U.S. Government catalog under NSN 5330-00-218-9485. 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.