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5579257 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5579257: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, hole_diameter: 0.188 INCHES NOMINAL IN, overall_height: 0.844 INCHES NOMINAL IN, special_features: TAPERED AT FIRST COUNTERBORED END; METAL WASHER IN BUMPER, style_designator: FLAT TOP COUNTERBORED, first_counterbore_depth: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-203-8675, 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
5579257
NSN: 5340-01-203-8675
FSC: 5340 — Hardware, Commercial
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialRUBBER
hole_diameter0.188 INCHES NOMINAL IN
overall_height0.844 INCHES NOMINAL IN
special_featuresTAPERED AT FIRST COUNTERBORED END; METAL WASHER IN BUMPER
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.438 INCHES NOMINAL IN
material_hardness_rating60.0 DUROMETER NOMINAL
first_counterbore_diameter0.375 INCHES NOMINAL IN
outside/top_flange_diameter1.062 INCHES NOMINAL IN
NSN5340-01-203-8675
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5579257 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
•
OUTSIDE/TOP FLANGE DIAMETER: 1.062 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 60.0 DUROMETER NOMINAL
•
FIRST COUNTERBORE DIAMETER: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
FIRST COUNTERBORE DEPTH: 0.438 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.844 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER1.062 INCHES NOMINAL IN
MATERIAL HARDNESS RATING60.0 DUROMETER NOMINAL
FIRST COUNTERBORE DIAMETER0.375 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
FIRST COUNTERBORE DEPTH0.438 INCHES NOMINAL IN
SPECIAL FEATURESTAPERED AT FIRST COUNTERBORED END; METAL WASHER IN BUMPER
MATERIALRUBBER
HOLE DIAMETER0.188 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
9320PL0797464Reference document
Same NSN cross-reference
Reference document — Informative reference only
ZB-1079M.1.Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 5579257?
5579257 is a BUMPER.
What parts can replace 5579257?
There are 2 known substitutes for 5579257: 9320PL0797464, ZB-1079M.1.. Substitute compatibility should be verified for your specific system.
What is the NSN for 5579257?
5579257 is cataloged in the U.S. Government catalog under NSN 5340-01-203-8675. This indicates validated use in U.S. government and defense supply chains.
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