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A74537 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A74537: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 45.0 DEGREES NOMINAL, material: ALUMINUM OVERALL, peripheral_diameter: 3.497 INCHES MINIMUM AND 3.498 INCHES MAXIMUM IN, center_hole_diameter: 1.502 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN, cross-sectional_height: 2.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-352-6734, 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
A74537
NSN: 5330-01-352-6734
FSC: 5330 — Packing and Gasket Materials
CAGE: 59276 — BRUDI INC (USA)
SPECIFICATIONS
angle45.0 DEGREES NOMINAL
materialALUMINUM OVERALL
peripheral_diameter3.497 INCHES MINIMUM AND 3.498 INCHES MAXIMUM IN
center_hole_diameter1.502 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
cross-sectional_height2.250 INCHES NOMINAL IN
NSN5330-01-352-6734
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A74537 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: 2.250 INCHES NOMINAL IN
•
ANGLE: 45.0 DEGREES NOMINAL
•
PERIPHERAL DIAMETER: 3.497 INCHES MINIMUM AND 3.498 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.502 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT2.250 INCHES NOMINAL IN
ANGLE45.0 DEGREES NOMINAL
PERIPHERAL DIAMETER3.497 INCHES MINIMUM AND 3.498 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.502 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
MATERIALALUMINUM 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A74537?
A74537 is a RETAINER,PACKING.
What is the NSN for A74537?
A74537 is cataloged in the U.S. Government catalog under NSN 5330-01-352-6734. 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.