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Technical Data Sheet
PartsTable / O-RING / ARP568-212
ARP568-212 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q OVERALL, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 1.137 INCHES NOMINAL IN, center_hole_diameter: 0.859 INCHES NOMINAL IN, cross-sectional_height: 0.139 INCHES NOMINAL IN, cross-sectional_shape_style: O-RING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-166-1109, 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
ARP568-212
NSN: 5331-00-166-1109
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q OVERALL
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter1.137 INCHES NOMINAL IN
center_hole_diameter0.859 INCHES NOMINAL IN
cross-sectional_height0.139 INCHES NOMINAL IN
cross-sectional_shape_styleO-RING
departure_from_cited_documentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
criticality_code_justificationZZZW
material_document_and_classificationZZ-R-765,CL 2B,GR 70 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5331-00-166-1109
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ARP568-212 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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN
•
TEMP RATING: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
OUTSIDE DIAMETER: 1.137 INCHES NOMINAL IN
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN
TEMP RATING-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
MATERIALRUBBER FLUOROCARBON CLASS FPM
OUTSIDE DIAMETER1.137 INCHES NOMINAL IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
AS3581-212Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-83248/2-212Interchangeable
interchangeable cross-reference
interchangeable
NAS1594-212CPInterchangeable
interchangeable cross-reference
interchangeable
21-1472Interchangeable
interchangeable cross-reference
interchangeable
5330PL1384862Interchangeable
interchangeable cross-reference
interchangeable
MILG23652Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ARP568-212?
ARP568-212 is a O-RING.
What parts can replace ARP568-212?
There are 19 known substitutes for ARP568-212: AS3581-212, MIL-R-83248/2-212, NAS1594-212CP and 16 more. Substitute compatibility should be verified for your specific system.
Is ARP568-212 still available?
ARP568-212 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026