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AS568-268 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568-268: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include temp_rating: -55.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL OVERALL, special_features: CROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200, peripheral_diameter: 8.704 INCHES MINIMUM AND 8.820 INCHES MAXIMUM IN, center_hole_diameter: 8.434 INCHES MINIMUM AND 8.534 INCHES MAXIMUM IN, elongation_percentage: 260 MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-627-4870, 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
AS568-268
NSN: 5330-00-627-4870
FSC: 5330 — Packing and Gasket Materials
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
temp_rating-55.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL OVERALL
special_featuresCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
peripheral_diameter8.704 INCHES MINIMUM AND 8.820 INCHES MAXIMUM IN
center_hole_diameter8.434 INCHES MINIMUM AND 8.534 INCHES MAXIMUM IN
elongation_percentage260 MAXIMUM
cross-sectional_shape_styleO-RING
cross_section_outside_diameter0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5330-00-627-4870
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-268 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
•
TEMP RATING: -55.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: O-RING
•
ELONGATION PERCENTAGE: 260 MAXIMUM
•
PERIPHERAL DIAMETER: 8.704 INCHES MINIMUM AND 8.820 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 8.434 INCHES MINIMUM AND 8.534 INCHES MAXIMUM IN
•
CROSS SECTION OUTSIDE DIAMETER: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
TEMP RATING-55.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL OVERALL
CROSS-SECTIONAL SHAPE STYLEO-RING
ELONGATION PERCENTAGE260 MAXIMUM
PERIPHERAL DIAMETER8.704 INCHES MINIMUM AND 8.820 INCHES MAXIMUM IN
SPECIAL FEATURESCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
CENTER HOLE DIAMETER8.434 INCHES MINIMUM AND 8.534 INCHES MAXIMUM IN
CROSS SECTION OUTSIDE DIAMETER0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 5
2-268N103-70Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
PK4301-1 PC 46Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
ASTM-D2000 GR 28G715E34E51E6Reference document
Same NSN cross-reference
Reference document — Secondary reference
5430-46Reference document
Same NSN cross-reference
Reference document — Secondary reference
BU00.102.0222Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 AS568-268?
AS568-268 is a PACKING,PREFORMED.
What parts can replace AS568-268?
There are 5 known substitutes for AS568-268: 2-268N103-70, PK4301-1 PC 46, ASTM-D2000 GR 28G715E34E51E6 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-268?
AS568-268 is cataloged in the U.S. Government catalog under NSN 5330-00-627-4870. 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.