PartsTable
Technical Data Sheet
Download PDF

508-6522 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

508-6522: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, hardness_rating: 90.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.858 INCHES NOMINAL IN, center_hole_diameter: 3.543 INCHES NOMINAL IN, cross-sectional_height: 0.157 INCHES NOMINAL IN, end_item_identification: FILTER ASSEMBLY, DU. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-702-5828, 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
508-6522
NSN: 5331-01-702-5828
FSC: 5331 — O-ring
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialRUBBER
hardness_rating90.0 SHORE DUROMETER A NOMINAL
outside_diameter3.858 INCHES NOMINAL IN
center_hole_diameter3.543 INCHES NOMINAL IN
cross-sectional_height0.157 INCHES NOMINAL IN
end_item_identificationFILTER ASSEMBLY, DU
NSN5331-01-702-5828
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 508-6522 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: 0.157 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.858 INCHES NOMINAL IN
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 3.543 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.157 INCHES NOMINAL IN
OUTSIDE DIAMETER3.858 INCHES NOMINAL IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER3.543 INCHES NOMINAL IN
END ITEM IDENTIFICATIONFILTER ASSEMBLY, DU
MATERIALRUBBER
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 1
516-5903 REV 00 IT 03Same 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
Ready to buy 508-6522?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 508-6522?
508-6522 is a O-RING.
What parts can replace 508-6522?
There is 1 known substitute for 508-6522: 516-5903 REV 00 IT 03. Substitute compatibility should be verified for your specific system.
What is the NSN for 508-6522?
508-6522 is cataloged in the U.S. Government catalog under NSN 5331-01-702-5828. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 508-6522

✓ 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.