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538271 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

538271: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL, peripheral_diameter: 3.415 INCHES MINIMUM AND 3.452 INCHES MAXIMUM IN, center_hole_diameter: 3.210 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN, fsc_application_data: STOP ASSY,PROPELLER AIRCRAFT, cross-sectional_height: 0.239 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-802-3396, 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
538271
NSN: 5330-00-802-3396
FSC: 5330 — Packing and Gasket Materials
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialRUBBER OVERALL
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL
peripheral_diameter3.415 INCHES MINIMUM AND 3.452 INCHES MAXIMUM IN
center_hole_diameter3.210 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
fsc_application_dataSTOP ASSY,PROPELLER AIRCRAFT
cross-sectional_height0.239 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
cross-sectional_shape_styleSPECIAL
material_document_and_classificationHS163,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-802-3396
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 538271 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
•
FSC APPLICATION DATA: STOP ASSY,PROPELLER AIRCRAFT
•
CROSS-SECTIONAL HEIGHT: 0.239 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: HS163,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 3.415 INCHES MINIMUM AND 3.452 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.210 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATASTOP ASSY,PROPELLER AIRCRAFT
CROSS-SECTIONAL HEIGHT0.239 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONHS163,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER3.415 INCHES MINIMUM AND 3.452 INCHES MAXIMUM IN
CENTER HOLE DIAMETER3.210 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
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 1
5330PL1029409Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 538271?
538271 is a PACKING,PREFORMED.
What parts can replace 538271?
There is 1 known substitute for 538271: 5330PL1029409. Substitute compatibility should be verified for your specific system.
What is the NSN for 538271?
538271 is cataloged in the U.S. Government catalog under NSN 5330-00-802-3396. 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.