PartsTable
Technical Data Sheet
Download PDF

8B6678 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8B6678: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, outer_groove_depth: 0.344 INCHES NOMINAL IN, outer_groove_width: 0.312 INCHES NOMINAL IN, peripheral_diameter: 2.000 INCHES NOMINAL IN, center_hole_diameter: 1.500 INCHES NOMINAL IN, cross-sectional_height: 0.562 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-950-8027, 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
8B6678
NSN: 5330-00-950-8027
FSC: 5330 — Packing and Gasket Materials
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
outer_groove_depth0.344 INCHES NOMINAL IN
outer_groove_width0.312 INCHES NOMINAL IN
peripheral_diameter2.000 INCHES NOMINAL IN
center_hole_diameter1.500 INCHES NOMINAL IN
cross-sectional_height0.562 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
NSN5330-00-950-8027
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8B6678 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
•
OUTER GROOVE DEPTH: 0.344 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.562 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 2.000 INCHES NOMINAL IN
•
OUTER GROOVE WIDTH: 0.312 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.500 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS
OUTER GROOVE DEPTH0.344 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.562 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER2.000 INCHES NOMINAL IN
OUTER GROOVE WIDTH0.312 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.500 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 8B6678?
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 8B6678?
8B6678 is a PACKING,PREFORMED.
What is the NSN for 8B6678?
8B6678 is cataloged in the U.S. Government catalog under NSN 5330-00-950-8027. 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 — 8B6678

✓ 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.