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R557-49330BPC3 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

R557-49330BPC3: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, gage_thickness: 0.019 INCHES NOMINAL IN, hardness_rating: 80.0 BRINELL STANDARD NOMINAL OVERALL, outside_diameter: 3.250 INCHES NOMINAL IN, special_features: BLACK, style_designator: CIRCULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-171-6853, 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
R557-49330BPC3
NSN: 5330-00-171-6853
FSC: 5330 — Packing and Gasket Materials
CAGE: 38056 — ASHCROFT INC DBA HEISE (USA)
SPECIFICATIONS
materialIRON OVERALL
gage_thickness0.019 INCHES NOMINAL IN
hardness_rating80.0 BRINELL STANDARD NOMINAL OVERALL
outside_diameter3.250 INCHES NOMINAL IN
special_featuresBLACK
style_designatorCIRCULAR
aperture_diameter2.875 INCHES NOMINAL IN
center_to_center_distance0.062 INCHES NOMINAL IN
cross-sectional_thickness0.025 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL
NSN5330-00-171-6853
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R557-49330BPC3 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 THICKNESS: 0.025 INCHES NOMINAL IN
•
HARDNESS RATING: 80.0 BRINELL STANDARD NOMINAL OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: METAL
•
OUTSIDE DIAMETER: 3.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 2.875 INCHES NOMINAL IN
•
MATERIAL: IRON OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.025 INCHES NOMINAL IN
HARDNESS RATING80.0 BRINELL STANDARD NOMINAL OVERALL
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLEMETAL
OUTSIDE DIAMETER3.250 INCHES NOMINAL IN
APERTURE DIAMETER2.875 INCHES NOMINAL IN
SPECIAL FEATURESBLACK
MATERIALIRON OVERALL
CENTER TO CENTER DISTANCE0.062 INCHES NOMINAL IN
GAGE THICKNESS0.019 INCHES NOMINAL IN
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 R557-49330BPC3?
R557-49330BPC3 is a GASKET.
What is the NSN for R557-49330BPC3?
R557-49330BPC3 is cataloged in the U.S. Government catalog under NSN 5330-00-171-6853. 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.