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7HB541 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7HB541: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, special_features: CROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200, center_hole_diameter: 13.9 MILLIMETERS NOMINAL MM, cross-sectional_height: 2.6 MILLIMETERS NOMINAL MM, end_item_identification: MRAP - COUGAR CAT1 A1. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-367-5650, 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
7HB541
NSN: 5331-00-367-5650
FSC: 5331 — O-ring
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
hardness_rating75.0 SHORE DUROMETER A NOMINAL
special_featuresCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
center_hole_diameter13.9 MILLIMETERS NOMINAL MM
cross-sectional_height2.6 MILLIMETERS NOMINAL MM
end_item_identificationMRAP - COUGAR CAT1 A1
part_name_assigned_by_controlling_agencySEAL-O-RING
NSN5331-00-367-5650
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7HB541 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: 2.6 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 13.9 MILLIMETERS NOMINAL MM
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT2.6 MILLIMETERS NOMINAL MM
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
SPECIAL FEATURESCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
CENTER HOLE DIAMETER13.9 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAL-O-RING
END ITEM IDENTIFICATIONMRAP - COUGAR CAT1 A1
MATERIALRUBBER FLUOROCARBON CLASS FPM
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 7HB541?
7HB541 is a O-RING.
What is the NSN for 7HB541?
7HB541 is cataloged in the U.S. Government catalog under NSN 5331-00-367-5650. 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.