PartsTable
Technical Data Sheet
AS568-425AMS7277 ✓ 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 color: BLACK, material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR, temp_rating: -60.0 CELSIUS AND 107.0 CELSIUS DEGC, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM, special_features: O-RING SHAPE;HYDRAULIC FLUID, PHOSPHATE-ESTER BASE OR OIL, SYNTHETIC, center_hole_diameter: 4.442 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-291-6864, 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
AS568-425AMS7277
NSN: 5331-01-291-6864
FSC: 5331 — O-RING
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
temp_rating-60.0 CELSIUS AND 107.0 CELSIUS DEGC
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM
special_featuresO-RING SHAPE;HYDRAULIC FLUID, PHOSPHATE-ESTER BASE OR OIL, SYNTHETIC
center_hole_diameter4.442 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
material_document_and_classificationAMS7277 ASSN STD SINGLE MATERIAL RESPONSE AND ASTMD2000 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-291-6864
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-425AMS7277 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
COLOR: BLACK
TEMP RATING: -60.0 CELSIUS AND 107.0 CELSIUS DEGC
CROSS-SECTIONAL HEIGHT: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 4.442 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: AMS7277 ASSN STD SINGLE MATERIAL RESPONSE AND ASTMD2000 ASSN STD SINGLE MATERIAL RESPONSE
MATERIAL: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
COLORBLACK
SPECIAL FEATURESO-RING SHAPE;HYDRAULIC FLUID, PHOSPHATE-ESTER BASE OR OIL, SYNTHETIC
TEMP RATING-60.0 CELSIUS AND 107.0 CELSIUS DEGC
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
CENTER HOLE DIAMETER4.442 INCHES MINIMUM AND 4.508 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS7277 ASSN STD SINGLE MATERIAL RESPONSE AND ASTMD2000 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
303FFInterchangeable
interchangeable cross-reference
interchangeable
77603X1CInterchangeable
interchangeable cross-reference
interchangeable
6303-2ZInterchangeable
interchangeable cross-reference
interchangeable
2425Interchangeable
interchangeable cross-reference
interchangeable
1856974-2Interchangeable
interchangeable cross-reference
interchangeable
01299-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS568-425AMS7277?
AS568-425AMS7277 is a O-RING.
What parts can replace AS568-425AMS7277?
There are 20 known substitutes for AS568-425AMS7277: 303FF, 77603X1C, 6303-2Z and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-425AMS7277?
AS568-425AMS7277 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-291-6864. This indicates validated use in U.S. government and defense supply chains.
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